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Projection image display device comprising a plurality of illumination optical systems

The purpose of the present invention is to provide a projection image display device in which all of the multiple light sources to be used are positioned optimally, regardless of the mode of installation of the device. This projection image display device has two illumination optical systems (1, 2) that are each provided with a light source (111, 211), a color separator for separating into three colors of light, a liquid crystal panel (150, 250) for forming an optical image, and a color synthesis prism (160, 260) for color-synthesizing. A polarization beam splitter (3) for synthesis synthesizes an optical image formed by the illumination optical system (1, 2), and projects the same from a projection lens (4). The optical axis (101, 201) of each light source (111, 211) is positioned within the same plane as the optical axis (401) of the projection lens (4), and so as to orthogonally intersect the optical axis (401) of the projection lens.




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Liquid crystal display having shielding conductor

Provided is a liquid crystal display including, on an insulation substrate having a polygonal display area and a peripheral area surrounding the display area a first signal line, a second signal line crossing the first signal line, a plurality of switching elements connected to the first signal line and the second signal line and disposed in the display area, a plurality of pixel electrodes each connected to the switching element and disposed in the display area, and a shielding conductor disposed in the peripheral area and extending along at least one side of the polygonal display area.




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Semiconductor device and method of manufacturing the semiconductor device

In a semiconductor device, a first interlayer insulating layer made of an inorganic material and formed on inverse stagger type TFTs, a second interlayer insulating layer made of an organic material and formed on the first interlayer insulating layer, and a pixel electrode formed in contact with the second interlayer insulating layer are disposed on a substrate, and an input terminal portion that is electrically connected to a wiring of another substrate is provided on an end portion of the substrate. The input terminal portion includes a first layer made of the same material as that of the gate electrode and a second layer made of the same material as that of the pixel electrode. With this structure, the number of photomasks used in the photolithography method can be reduced to 5.




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Back plate component having reflective sheet reinforcing structure and liquid crystal display device including the same

Provided is a back plate component having reflective sheet reinforcing structure. The back plate component includes: a frame, a reflective sheet and a plurality of supporting film sheets. The frame includes a plurality of lateral beams and vertical beams, and at least one hollow part is included between the lateral beams and the vertical beams. The reflective sheet is attached to the frame, and includes a reflective surface and a back surface corresponding to the reflective surface. A portion of the back surface covers the whole hollow part. The plurality of supporting film sheets is attached to the back surface at a region corresponding to the hollow part, and includes a material the same as that of the reflective sheet. A liquid crystal display device is further disclosed herein.




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Display device and method of LC panel protection

A display device uses a multilayer film (104), which reflects (red) light having wavelengths between about 600 and 800 nm at a 60 degree angle of incidence (114), to protect a liquid crystal panel (102) from heat and sun damage. The film (104) transmits light of the visible band with a wavelength between about 420 and 650 nm at normal incidence (116). The outermost surface (106) of the film (104) may be a hard coat (124). A metal oxide layer (120) and a metal layer (130) may be included to reflect IR light greater in wavelength than about 850 nm.




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Tape substrate for chip on film structure of liquid crystal panel

The present invention discloses a tape substrate for chip on film structure of a liquid crystal panel. The tape substrate is provided with plural package units of chip on film structures arranged along its longitudinal direction, and the package unit has a driver chip, input leads and output leads. The longitudinal direction of the driver chip is parallel to the longitudinal direction of the tape substrate, and the input leads and the output leads are located at the two opposite sides of the driver chip. Each package unit is set up with a short side and a long side, and the input leads are formed at the short side, while the output leads are formed at the long side. In the package units adjacent to each other, the short side of one package unit joins the long side of a next package unit. This invention further discloses a liquid crystal panel having the tape substrate.




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High extinction ratio liquid crystal optical switch

An optical switch for performing high extinction ratio switching of an optical signal includes a beam polarizing element and one or more optical elements. The optical elements are configured to direct an optical signal along a first or second optical path based on the polarization state of the optical signal as it passes through the optical elements. The optical switch performs high extinction ratio switching of the optical signal by preventing unwanted optical energy from entering an output port by using an absorptive or reflective optical element or by directing the unwanted optical energy along a different optical path.




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Liquid crystal display device, semiconductor device, and electronic appliance

The liquid crystal display device includes an island-shaped first semiconductor film 102 which is formed over a base insulating film 101 and in which a source 102d, a channel forming region 102a, and a drain 102b are formed; a first electrode 102c which is formed of a material same as the first semiconductor film 102 to be the source 102d or the drain 102b and formed over the base insulating film 101; a second electrode 108 which is formed over the first electrode 102c and includes a first opening pattern 112; and a liquid crystal 110 which is provided over the second electrode 108.




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Liquid crystal display device, semiconductor device, and electronic appliance

The liquid crystal display device includes an island-shaped first semiconductor film 102 which is formed over a base insulating film 101 and in which a source 102d, a channel forming region 102a, and a drain 102b are formed; a first electrode 102c which is formed of a material same as the first semiconductor film 102 to be the source 102d or the drain 102b and formed over the base insulating film 101; a second electrode 108 which is formed over the first electrode 102c and includes a first opening pattern 112; and a liquid crystal 110 which is provided over the second electrode 108.




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Multi-twist retarders for broadband polarization transformation and related fabrication methods

An optical element includes at least two stacked birefringent layers having respective local optical axes that are rotated by respective twist angles over respective thicknesses of the at least two layers, and are aligned along respective interfaces between the at least two layers. The respective twist angles and/or the respective thicknesses are different. The at least two stacked birefringent layers may be liquid crystal polymer optical retarder layers. Related devices and fabrication methods are also discussed.




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Constant-temperature equipment

Constant-temperature equipment wherein mechanical and electrical structures are eliminated from the inside of a temperature-controlled chamber (15) by using a non-contact magnetic arrangement as a drive transmission for a sample table (5) and a sample table drive mechanism (6), thus reducing failure and enhancing maintainability. In addition, a conveyance mechanism (11) is provided with a pass box adjacent which sliding shielding plates (9) are stacked vertically, and the shielding plates (9) are linked with the conveyance mechanism (11) by an engaging mechanism provided in the conveyance mechanism (11) to allow the plates to be opened and closed by a travel mechanism (12), thus simplifying the structure and minimizing change in atmosphere during conveying. The sample table drive mechanism (6) and the conveyance mechanism (11) can be attached removably to the temperature-controlled chamber (15) to permit sterilization at high temperature.




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Constant-temperature equipment

Provided is constant-temperature equipment wherein maintenance is facilitated with the least failure, and highly reliable culturing and testing can be carried out. Mechanical and electrical structures are eliminated from the inside of a temperature-controlled chamber (15) by using a non-contact magnetic arrangement as a drive transmission for a sample table (5) and a sample table drive (6), thus reducing failure and enhancing maintainability. In addition, a conveyor (11) is provided with a pass box to minimize change in atmosphere during conveying. The sample table drive (6) and the conveyor (11) can be attached removably to the temperature-controlled chamber (15) to permit sterilization at high temperature.




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Production of viral vaccines in suspension on avian embryonic derived stem cell lines

The present invention relates to the development and manufacturing of viral vaccines. In particular, the invention relates to the field of industrial production of viral vectors and vaccines, more in particular to the use of avian embryonic stem cells, preferably the EBx® cell line derived from chicken embryonic stem cells, for the production of viral vectors and viruses. The invention is particularly useful for the industrial production of viral vaccines to prevent viral infection of humans and animals.




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Methods of expanding embryonic stem cells in a suspension culture

A method of expanding and maintaining human embryonic stem cells (ESCs) in an undifferentiated state by culturing the ESCs in a suspension culture under culturing conditions devoid of substrate adherence is provided. Also provided are a method of deriving ESC lines in the suspension culture and methods of generating lineage-specific cells from ESCs which were expanded in the suspension culture of the present invention.




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Method of selecting stem cells having high chondrogenic differentiation capability

Thrombospondin 1 (TSP-1), TSP-2, interleukin 17B receptor (IL-17BR) and heparin-binding epidermal growth factor-like growth factor (HB-EGF) associated with stem cell activity and use thereof.




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Method of washing adherent cell using trehalose-containing cell-washing solution

Methods of washing adherent cells, capable of effectively suppressing cell death due to proteolytic enzyme treatment for detaching the adherent cell from a culture vessel and subsequent cell treatment; cell-washing solutions used for the washing method; methods of producing cell suspensions for transplantation using the cell-washing solution; and kits comprising the cell-washing solution. Trehalose or its derivative or a salt thereof is added to physiological aqueous solutions to prepare cell-washing solutions containing trehalose or its derivative or a salt thereof as an active ingredient. The cell-washing solutions can be used to wash adherent cells before detaching the adherent cells from a culture vessel by proteolytic enzyme treatment to suppress cell death due to the proteolytic enzyme treatment. The concentration of trehalose applied to the cell-washing solution may be a concentration capable of suppressing the cell death due to the proteolytic enzyme treatment, such as 0.1 to 20 (w/v) %.




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Separator device, deposition device and system for handling of somatic plant embryos

Methods and devices for separating fluid-suspended plant somatic embryos and embryogenic tissue based on differences in their fluid drag properties are disclosed. Deposition method and device for depositing plant somatic embryos into embryo receiver comprising growth substrate by means of a fluid jet is disclosed. An automated system for processing plant somatic embryos from the bioreactor to the growth substrate is also disclosed.




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Sample collection and analysis

Management of the health status of an animal colony using a plurality of blood collection cards and the analysis of dried blood from members of the colony that has been collected on the cards. Members of the colony may be removed from the colony as a result of the analysis.




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General composition framework for ligand-controlled RNA regulatory systems

The invention provides an improved design for the construction of extensible nucleic acid-based, ligand-controlled regulatory systems, and the nucleic acid regulatory systems resulting therefrom. The invention contemplates improving the design of the switches (ligand-controlled regulatory systems) through the design of an information transmission domain (ITD). The improved ITD eliminates free-floating ends of the switching and the competing strands, and localizes competitive hybridization events to a contiguous strand of competing and switching strands in a strand-displacement mechanism-based switch, thereby improving the kinetics of strand-displacement. The improved regulatory systems have many uses in various biological systems, including gene expression control or ligand-concentration sensing.




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Methods and compositions for modulating tau levels

Methods and agents for reducing a level of an acetylated Tau polypeptide in a cell are provided. Methods for treating a tauopathy in an individual are also provided. Also provided is a method for diagnosing a cognitive impairment disorder in an individual. Methods for identifying an agent suitable for treating a tauopathy are also provided.




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Small molecule antagonists of phosphatidylinositol-3,4,5-triphosphate (PIP3) and uses thereof

Disclosed are new members of a class of non-lipid small molecule inhibitors which interfere with the interaction between phosphoinositol-3,4,5-triphosphate (PIP3) and pleckstrin homology (PH) domains. These molecules target a broad range of PIP3-dependent signaling events in vitro and exert significant anti-tumor activity in vivo, with improved activity and selectivity toward particular PH domains. The small molecule inhibitors of the invention can be used alone or together with tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) or other cancer medicament to treat cancer. Small molecule inhibitors of the invention act synergistically in combination with TRAIL and with other Akt inhibitors in treating cancer. Pharmaceutical compositions and methods for treating cancer are provided.




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Materials and methods for preparing protein-polymer conjugates

The invention is directed to a single-step method for rapidly and efficiently preparing protein-polymer conjugates, including an insulin-polymer conjugate. According to the method of the present invention, a protein and hydrophilic polymer are contacted in the presence of at least one organic solvent and at least one metal chelator, under conditions that promote the formation of a conjugate of the protein and polymer. Thus, the invention is directed to the site-specific modification of selected proteins, such as insulin, with poly(ethylene glycol) at residue PheB1. The invention also provides a pharmaceutical formulation for encapsulating the conjugate in a biodegradable polymer.




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Monoclonal thyroid stimulating or blocking antibodies, peptide sequences corresponding to their variable regions, and their uses in diagnostic, preventive and therapeutic medicine

Monoclonal antibodies (mAbs) having thyroid stimulating activity (TSAb), especially full or considerably agonistic activity, or thyroid blocking activity (TBAb), which are obtainable by genetic immunization of mice, or fragments (F(ab')2, Fab or Fv) or humanized forms of such monoclonal antibodies or single chain forms (SCA; scFv) of such fragments, which antibodies, or their fragments, compete with bovine TSH for epitopes of the human TSHr, compete with autoantibodies from sera from Graves' patients as well as with autoantibodies from sera from patients harboring blocking autoantibodies for epitopes of the human TSHr, bind to conformational epitopes of the human TSHr located in the first 281 amino acids of the human TSHr, and usually also bind to TSFR receptors (TSHr) from different animals. Various uses of such antibodies, or of peptides corresponding to variable regions of such antibodies, are also described and claimed.




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Transcription activator-like effector assembly

Described herein are techniques for assembling a polynucleotide encoding a transcription activator-like effector nucleases (TALEN). The techniques ligate and digest necessary modules for a TALEN assembly in one reactor or system. Methods and Kits for generating a TALEN are also described.




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Compositions and methods for enhancing resistance to northern leaf blight in maize

The invention relates to methods and compositions for identifying and selecting maize plants with enhanced resistance to northern leaf blight. Maize plants generated by the methods of the invention are also a feature of the invention.




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Plants having altered agronomic characteristics under nitrogen limiting conditions and related constructs and methods involving genes encoding LNT1 polypeptides and homologs thereof

Isolated polynucleotides and polypeptides and recombinant DNA constructs particularly useful for altering agronomic characteristics of plants under nitrogen limiting conditions, compositions (such as plants or seeds) comprising these recombinant DNA constructs, and methods utilizing these recombinant DNA constructs. The recombinant DNA construct comprises a polynucleotide operably linked to a promoter functional in a plant, wherein said polynucleotide encodes an LNT1 polypeptide.




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Recombinant DNA constructs encoding ribonuclease cleavage blockers and methods for modulating expression of a target gene

This invention provides recombinant DNA constructs and methods for manipulating expression of a target gene that is regulated by a small RNA, by interfering with the binding of the small RNA to its target gene. More specifically, this invention discloses recombinant DNA constructs encoding cleavage blockers, 5-modified cleavage blockers, and translational inhibitors useful for modulating expression of a target gene and methods for their use. Further disclosed are miRNA targets useful for designing recombinant DNA constructs including miRNA-unresponsive transgenes, miRNA decoys, cleavage blockers, 5-modified cleavage blockers, and translational inhibitors, as well as methods for their use, and transgenic eukaryotic cells and organisms containing such constructs.




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Genes regulating plant branching, promotors, genetic constructs containing same and uses thereof

The invention relates to genes coding for TCP family transcription factors and having a biological role in the development of axillary buds and branch growth. Furthermore, the invention relates to the promoters of the transcription of said genes, to the genetic constructs containing same and to the uses thereof, including the use of agents that modulate the expression of these genes in order to modify plant architecture.




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Compositions for diagnosis and therapy of diseases associated with aberrant expression of futrins (R-spondins) and/or Wnt

The present invention relates to a composition useful for the diagnosis of diseases associated with aberrant expression of the genes encoding the secreted proteins Futrin 1, 2, 3 and/or 4(=R-Spondin 2, 3, 1 and 4, respectively), e.g. in connection with tumors or diseases of the muscle, kidneys or bones. The present invention also relates to a pharmaceutical composition containing a compound which is capable of modifying (a) the expression of the gene encoding Futrin 1, 2, 3 and/or 4 or (b) the activity of the Futrin 1, 2, 3 and/or 4 protein.




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Method of determining the nucleotide sequence of oligonucleotides and DNA molecules

The present invention relates to a novel method for analyzing nucleic acid sequences based on real-time detection of DNA polymerase-catalyzed incorporation of each of the four nucleotide bases, supplied individually and serially in a microfluidic system, to a reaction cell containing a template system comprising a DNA fragment of unknown sequence and an oligonucleotide primer. Incorporation of a nucleotide base into the template system can be detected by any of a variety of methods including but not limited to fluorescence and chemiluminescence detection. Alternatively, microcalorimetic detection of the heat generated by the incorporation of a nucleotide into the extending template system using thermopile, thermistor and refractive index measurements can be used to detect extension reactions.




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Mutant receptors and their use in a nuclear receptor-based inducible gene expression system

This invention relates to the field of biotechnology or genetic engineering. Specifically, this invention relates to the field of gene expression. More specifically, this invention relates to novel substitution mutant receptors and their use in a nuclear receptor-based inducible gene expression system and methods of modulating the expression of a gene in a host cell for applications such as gene therapy, large scale production of proteins and antibodies, cell-based high throughput screening assays, functional genomics and regulation of traits in transgenic organisms.




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Protein concentrate and an aqueous stream containing water-soluble carbohydrates

Disclosed are process for contacting a protein containing material with one or more wet-mill streams. The protein content of the protein containing material is increased.




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Mitigation of odor in cleaning machines and cleaning processes

The invention relates to malodor controlling bacteria and related methods and compositions for the control and prevention of malodor.




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Method of regulating gene expression

The present invention relates, in general, to gene expression and, in particular, to a method of inhibiting the expression of a target gene and to constructs suitable for use in such a method.




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Method for producing sialic-acid-containing sugar chain

[Problem to be Solved] The importance of sugar chains having α2,3- or α2,6-linked sialic acid at their non-reducing ends is known. Industrial production has been demanded for these sugar chain compounds. Particularly, the production of glycoprotein drugs or the like inevitably requires producing in quantity sugar chains having homogeneous structures by controlling the linking pattern (α2,6-linkage or α2,3-linkage) of sialic acid. Particularly, a triantennary or tetraantennary N-type complex sugar chain having sialic acid at each of all non-reducing ends is generally considered difficult to chemically synthesize. There has been no report disclosing that such a sugar chain was chemically synthesized. Furthermore, these sugar chains are also difficult to efficiently prepare enzymatically.[Solution]The present inventors have newly found the activity of sialyltransferase of degrading sialic acid on a reaction product in the presence of CMP and also found that formed CMP can be degraded enzymatically to thereby efficiently produce a sialic acid-containing sugar chain. The present inventors have further found that even a tetraantennary N-type sugar chain having four α2,6-linked sialic acid molecules, which has previously been difficult to synthesize, can be prepared at high yields by one-pot synthesis comprising the elongation reaction of a biantennary sugar chain used as a starting material without performing purification after each enzymatic reaction.




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Seat cushion, for instance for an aircraft seat, and a method for manufacturing such a seat cushion

A seat cushion, in particular for an aircraft seat, the seat cushion comprising a seat part having a receiving surface adapted to receive a person and a reinforcing part supporting the seat part, wherein at least the reinforcing part contains expanded polypropylene (EPP), preferably comprising fire retardant properties. The invention further relates to a method for manufacturing such a seat cushion, a seat comprising such a seat cushion and a vehicle comprising such a seat.




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Chair, a support, and components

A chair has a seat support (101), a seat portion (13), a back portion (15), and a supporting frame. The supporting frame is formed by a castored base (11), a height adjustment mechanism (17), and a main transom (21). The seat portion (13) is selectively moveable relative to the supporting frame, with the seat portion having a locked configuration and a released configuration. The back portion has a back frame (25) and a compliant cover (61). The back frame has hook features for receiving a portion of the compliant cover (61). The back portion (15) is reclinable relative to the supporting frame between an upright position and a reclined position. A recline mechanism has deformable members operatively connecting the seat portion and the supporting frame. A recline resistance mechanism is selectively engageable to resist movement of the back portion toward the reclined position.




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Operating unit for installation in an aircraft cabin

An operating unit (1) for installation in an aircraft cabin comprises an operating unit front side (10) and an operating unit rear side (20), at least one operating element (12, 14) attached in the region of the operating unit front side (10) and accessible to a user, and a holding device (40) for attaching the operating unit (1) to a monument (30) accommodating the operating unit (1) in its state mounted in the aircraft cabin. The holding device (40) is designed to attach the operating unit (1) in its state mounted in the aircraft cabin to the monument (30), in a first position or in a second position, as desired, the operating element (12, 14) in the second position of the operating unit (1) being situated in a spatial position which is lowered with respect to the spatial position of the operating element (12, 14) in the first position of the operating unit (1) and/or is displaced in a direction parallel to an imaginary straight line connecting the operating unit rear side (20) to the operating unit front side (10).




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Vehicle seat assembly having a hardness gradient via surface intrusions and/or protrusions

A method of making a vehicle seat assembly comprising providing a cushion having an “A” surface, a “B” surface, a central portion, and two bolster areas, with each bolster area being adjacent the central portion, the cushion having a plurality of intrusions extending from the “A” surface towards the “B” surface to form a hardness gradient between at least one of the bolster areas and the central portion of between 8% to 25%, securing the cushion to a frame, and covering cushion with a trim member.




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Crash indication system for a reclining ride down child seat

More specifically, the crash indication system for a child safety seat includes a seat bottom. A base is provided for supporting the seat bottom, which is slidably connected to the bases so that the seat body is movable relative to the base, between a resting position and a ride down position, a position due to a change in environmental forces. The seat body is adjustably affixed to a carriage to set a recline position. An indicator member is attached to the carriage and moves therewith to visually track and monitor the movement of the seat. When ride down of the seat occurs due to a change in forces to the seat, the indicator member moves with the sliding carriage to reflect a ride down position of the seat bottom. A ratchet connection is provided to prevent the carriage from going back to its resting position.




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Seat extension seamless gap fill

A vehicle seating assembly includes a seatpan coupled with a track assembly that has a rail and a slide. The vehicle seating assembly also includes a cushion assembly that has a movable cushion and a base cushion with a slot. The movable cushion is slidable between a forward position and a rearward position on the seatpan. In addition, the vehicle seating assembly includes a coverstock with a first portion that is disposed over a movable cushion. The coverstock also has a second portion that is disposed between the seatpan and the cushion assembly. The second portion of the coverstock is withdrawn through the slot when the movable cushion moves to the forward position. A gap is defined by the area between the base cushion and the movable cushion in the forward position. The gap is concealed by the coverstock when the movable cushion is in the forward position.




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Cushion element with different hardness zones for motor vehicles

A cushion element for a vehicle seat or headrest comprises a non-woven layer and a fiber composite material. An insert material is arranged between the non-woven layer and the fiber composite material, and has different compression properties than the fiber composite material. The fiber composite material forms together with the insert material and the non-woven layer a one-piece material composite.




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Resonance circuit with variable diodes

A resistance having a high impedance is connected between anode terminals of two variable capacitance diodes sharing a cathode, and the components described above are sealed in one package. The resistance can be formed of a diffusion region between p-regions of the variable capacitance diodes or can be formed of polysilicon and disposed on a chip. Thus, the resistance can be mounted while a chip size of the variable capacitance diode is maintained. Accordingly, it is not required that a bias resistance having a high impedance is additionally provided, whereby achieving reduction in the substrate mounting area and reduction in costs of the set.




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Variable tuning circuit using variable capacitance diode and television tuner

The invention provides a variable tuning circuit capable of extending a variable range in a high frequency band, ensuring the value of L of an inductor to increase the value of Q of a circuit in a low frequency band, and preventing a reduction in gain, an increase in noise, and unstable oscillation. A variable tuning circuit includes: a first parallel resonance circuit that includes a varactor diode, a capacitor connected in series to the varactor diode, and a first inductor connected in parallel to the varactor diode and the capacitor; and a second parallel resonance circuit that includes a second inductor connected in parallel to the varactor diode with a direct current cut-off capacitor interposed therebetween. When the varactor diode has a maximum capacitance, a resonant frequency of the second parallel resonance circuit is set about a lowest frequency in a variable frequency range.




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Method and apparatus to facilitate the provision and use of a plurality of varactors with a plurality of switches

A plurality of varactors are coupled via a first electrode to a shared terminal that in turn can operably couple to a source of control voltage. A second electrode for each varactor couples to a corresponding switch, where each switch couples to at least two different voltage levels. So configured, the second electrode of each varactor can be individually connected to either of two voltage levels. This can be leveraged to control, in coarse steps, the overall aggregate effective capacitance presented by these components. At least some of these varactors can have differing corresponding capacitances, the specific values of which can be selected in order to facilitate relatively equal spacing and substantially equal rates of reactance change versus the control voltage value between aggregate-capacitive reactance ranges as correspond to differing settings for the switches at various levels for the control voltage source.




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Single package television tuning apparatus and television receiver including the same

There are provided a single package television tuning apparatus and a television receiver including the apparatus. The apparatus includes: a printed circuit board; a switching part installed on the printed circuit board and selecting one of a first radio frequency signal and a second radio frequency signal inputted; a tuner part installed on the printed circuit board and down-converting one of the first radio frequency signal and the second radio frequency signal, the one selected by the switching part; first and second input connectors receiving the first radio frequency signal and the second radio frequency signal; and a chassis supporting the first and second input connectors, covering the printed circuit board, the switching part, and the tuner part, and electrically connected to grounds of the switching part and the tuner part.




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Apparatus, system and methods for enabling linearity improvement in voltage controlled variable capacitors

An embodiment of the present invention provides an apparatus, comprising at least one anti-parallel pair VVC network comprised of two parallel VVCs with one biased in the opposite polarity of the other and at least one anti-series VVC network comprised of two VVCs configured in series, one biased in the opposite polarity of the other such that the resulting AC capacitive variations produce a desired capacitance variation.




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Boosted-bias tunable filter with dynamic calibration

In a signal communication device, a frequency-selective filter has at least one component that is biased by a control signal to establish a center frequency of the frequency-selective filter. A closed-loop bias generator is provided to generate the control signal and to adjust the control signal based, at least in part, on a comparison of the control signal and a reference signal.




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Communication module having tuner units that are separated and isolated from each other, and method of manufacturing the same

A communication module is provided in which its characteristic of separation between its first and second tuner units is improved. The module is equipped with a circuit board having a first main surface, and a second main surface opposite to the first main surface; a first amplifier arranged on the first main surface, for amplifying a first signal; a first mixer arranged on the first main surface, for converting a signal supplied from the first amplifier to an intermediate-frequency signal; a second amplifier for amplifying a second signal; and a mixer for converting a signal supplied from the second amplifier to an intermediate-frequency signal, both arranged on the second main surface of the circuit board.




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Double-tuning circuit of television tuner

In a double-tuning circuit including a primary tuning circuit having a first inductor and a first variable capacitive element connected in parallel and a secondary tuning circuit having a second inductor and a second variable capacitive element connected in parallel, a fixed part of a copper-foil pattern is connected to a connection point at which the double-tuning circuit is connected to an input terminal of a frequency mixing circuit, and a tip part of the copper-foil pattern extends to near the first inductor, whereby a trap circuit for attenuating an image frequency component is formed. A pattern is formed between a ground-side terminal of the first inductor and the ground, and a capacitor is connected between a connection point at which the first inductor is connected to one terminal of the pattern and a ground-side terminal of the second variable capacitive element.