Abstract: A video coding apparatus includes a motion compensation circuit for motion-compensating a picture signal in a frame previous to a frame of video signals input for each frame, and generating a motion compensation picture signal, a nonlinear processing circuit for compressing a motion compensation error signal representing an error between each of the input video signal and the motion compensation picture signal at a compression rate which rises as the error increases, and outputting a motion compensation error signal, and a coding circuit for orthogonally transforming the motion compensation error signal output from the nonlinear difference circuit, quantizing the orthogonally-transformed signal, and coding the quantized signal.

Abstract: A video coding/decoding apparatus comprises a prediction circuit that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal by performing prediction region by region, a subtracter for generating a prediction error signal for a prediction signal at the lowest level, a DCT circuit for coding a prediction error signal, a quantization circuit and a variable-length encoder, a variable-length encoder for coding the prediction mode and motion vector information obtained at each level from the prediction circuit, and a multiplexer for multiplexing the code strings obtained from the variable-length encoder and dividing them into the upper-layer and lower-layer code strings to output the code strings obtained at the variable-length encoder particularly as upper-layer code strings.

Abstract: A modifier for resin and rubber of which an active ingredient is a reaction product of a styrene-maleic anhydride copolymer (A) with a poly(alkylene oxide) monoalkyl ether (B), and/or a metal salt thereof, which modifier improves processability and properties of resins or rubbers. For example, the modifier provides resins or rubbers with antistatic properties. It also enhances the dispersibility of additives, e.g., a flame retardant or fillers incorporated in the resin or the rubber, and provides resins or rubbers with, for example, excellent flame retardancy and prevents the additive or the filler from blooming.

Abstract: A connector structure includes a housing; a rear holder which is coupled to the rear end portion of the housing; and a pair of operating walls which are confronted with both side edges of the free end portion of a locking arm and are adapted to press the free end portion from both sides to bend the locking arm downwardly. The operating walls is bendable with their lower ends as fulcrums which are located below the center of the housing.

Abstract: A lever-coupling type connector includes a pair of one and other connector housings to be fit into each other; a lever rotatably supported by the one connector housing and having a guiding groove; the other connector housing having an introducing protrusion to be engaged with the guiding groove; wherein the lever has a locking hook protruded from its supporting shaft, and the one connector housing includes an elastic locking piece having an elastic step to be engaged with the locking hook when the lever is rotated in a direction of coupling both connector housings. The lever is urged in an anti-fitting direction by the elastic force of the elastic locking piece in a state where both connector housings are completed fit into each other. This permits the state of semi-fitting of both connector housings to be easily recognized.

Abstract: A motion picture coding apparatus for performing predictive coding on a high-resolution picture signal and coding a low-resolution picture signal obtained by converting the high-resolution picture signal. One field is thinned out from one frame of a picture by a field skip circuit 102, the other field is down-sampled by a down-sampling circuit 29, thereby forming a low-resolution picture. A low-resolution predictive signal, obtained by up-sampling the low-resolution picture by an up-sampling circuit 35, and a high-resolution predictive signal, which is produced from a high-resolution picture and corresponds to the thinned-out one field, are alternately combined by a predictor 104 to form a predictive signal.

Abstract: A one piece two way voice communications earset which is situated in or at the ear of the user and which includes either two unidirectional microphones having their outputs combined or a single bi-directional microphone. The earset also includes a combination circuit for adding or subtracting the first and second signals output from the first and second microphones respectively.

Abstract: A connector for connecting a plurality of metal terminals (25) to a circuit board (95) includes a connector housing (27) formed with a plurality of metal terminal accommodate chambers (39), a terminal cover (31) engaged with both ends of the connector housing slidably between a terminal cover position and a terminal uncover position, and a terminal retainer (33, 96, 107) engaged with the connector housing between a temporal engage position and a full engage position; the metal retainer includes a plurality of flexible detect arms (87, 101, 103), and a plurality of detect projections (89, 103, 115) being not inserted into each of the terminal accommodate chambers due to contact with the imperfectly-inserted metal terminal at the full engage position, but inserted into each of the terminal accommodate chambers at the temporal engage position without contact with the perfectly-inserted metal terminal.

Abstract: A connector with a cover used for connecting wires to a printed circuit board or the like, in which an incompletely-inserted condition of a terminal received in a housing can be perfectly detected. A cover-holding rib is formed on an upper surface of a housing body, and a cover, having an engagement groove in which the rib is fitted, is slidably mounted on an upper portion of the housing body. When the cover is opened to be received in a retainer fitted on the housing body, contact piece portions of terminals are exposed from the housing body.

Abstract: A video recording/reproducing apparatus having an encoder for encoding a video signal, and a recording unit for recording encoded information from the encoder on a digital recording medium, the encoder comprising a memory for storing at least first and second reference pictures, a prediction circuit for forming a prediction signal for an input signal, using a first reference signal from the first reference picture designated by a first motion vector, and a second reference signal from the second reference picture designated by a second motion vector, a first motion vector detector for determining a third motion vector from a point of intersection of the first motion vector and the second motion vector to a point in the second reference picture where the first motion vector intersects the second reference picture, a second motion vector detector for determining a differential motion vector by subtracting the third motion vector from the second motion vector, and an encoding circuit for encoding the first motio

Abstract: A connector includes a front holder adapted to be removably mounted to a connector housing from the front side thereof, the front holder having elastic retaining pieces for retaining female terminals to prevent the terminals from rearward withdrawal from the connector housing. The connector housing includes a holder abutting portions for abutting against the elastic retaining pieces, which are deflecting position not to engage the female terminals under a temporary retained condition of the front holder, to prevent the movement of the front holder toward a regularly retained condition, and elastic retaining piece holding portions for preventing the elastic retaining pieces, which retains the female terminals under the regularly retained condition of the front holder, from deflecting in the disengagement direction.

Abstract: Disclosed is a thermoplastic resin composition comprising (A) an amorphous resin and further comprising, per 100 parts by weight of the amorphous resin,0.01 to 20 parts by weight of (B) an epoxy group-containing ethylene copolymer, and0.01 to 20 parts by weight of at least one member selected from the group consisting of (C) a polyfunctional compound and (D) a carboxylic acid metal salt, wherein the polyfunctional compound contains, per molecule, at least two identical or different functional groups selected from the group consisting of carboxyl group, amino group, carboxylic acid anhydride group and a unit represented by the formula (1) ##STR1## wherein X and Y are identical and each represents oxygen atom or sulfur atom, or one of X and Y is an oxygen atom and the other is a sulfur atom, or wherein the polyfunctional compound contains, per molecule, at least one unit represented by the formula (2) ##STR2## wherein Z represents oxygen atom or sulfur atom.

Abstract: A connecter lever locking mechanism in a lever-type connector which includes: a connector housing, an operation lever pivoted on the connector housing and a flexible locking portion formed on the connector housing and provided with a lock releasing operation portion. The operation lever includes a lever horizontal rod portion and a locking engagement portion formed on one surface of the lever horizontal rod portion so as to project toward the flexible locking portion. The connector housing has a tapered surface formed on an outer wall thereof so as to abut against the other surface of the lever horizontal rod portion opposite to the one surface thereof on which the locking engagement portion is formed so as to project therefrom.

Abstract: A one piece two way voice communications earset which is situated in or at the ear of the user and which includes either two unidirectional microphones having their outputs combined or a single bi-directional microphone.

Abstract: A video coding apparatus includes a memory for storing a coded picture signal used as a reference picture signal, a vector detecting circuit for detecting, from plural field picture signals or plural frame picture signals which are read out from the memory and the reference picture signals, an optimum motion vector regarding a picture to be coded, a prediction signal producing circuit for subjecting a spatial-temporal filtering to a reference picture designated by the optimum motion vector to produce a prediction signal, and a coding circuit for coding the to-be-coded picture signal on the basis of the prediction signal.

Abstract: Disclosed is a thermoplastic resin composition comprising (A) an amorphous resin and further comprising, per 100 parts by weight of the amorphous resin,0.01 to 20 parts by weight of (B) an epoxy group containing ethylene copolymer, and0.01 to 20 parts by weight of at least one member selected from the group consisting of (C) a polyfunctional compound and (D) a carboxylic acid metal salt, wherein the polyfunctional compound contains, per molecule, at least two identical or different functional groups selected from the group consisting of carboxyl group, amino group, carboxylic acid anhydride group and a unit represented by the formula (1) ##STR1## wherein X and Y are identical and each represents oxygen atom or sulfur atom, or one of X and Y is an oxygen atom and the other is a sulfur atom, or wherein the polyfunctional compound contains, per molecule, at least one unit represented by the formula (2) ##STR2## wherein Z represents oxygen atom or sulfur atom.

Abstract: A dental gypsum composition is disclosed, comprising (A) 100 parts by weight of calcined gypsum, (B) from 0.005 to 5.0 parts by weight of an alkali metal tartrate, (C) from 0.1 to 5.0 parts by weight of a sugar alcohol, and (D) from 0.005 to 3.0 parts by weight of a retarder. The composition provides a denture model excellent in surface smoothness, dimensional precision, and mechanical strength even when combined with an impression made of an agar-based material or an alginate-based material.

Abstract: A video decoding apparatus including a memory for storing at least first and second reference pictures, a prediction signal forming circuit for forming a prediction signal to produce an output signal, using a first reference signal designated by a first motion vector for the first reference picture and a second reference signal designated by a second motion vector for the second reference picture read out of the memory. Also included is a decoding circuit for decoding the transmitted first motion vector and a transmitted motion vector difference, and for further decoding the second motion vector by adding a scaled motion vector and the motion vector difference. The scaled motion vector is derived by scaling the first motion vector to a motion vector for the second reference picture. Further included is a decoding circuit for decoding a transmitted difference signal and for obtaining the output signal by adding the difference signal and the prediction signal.

Abstract: A thermoplastic elastomer composition which is excellent in balance of properties such as mechanical properties and thermal properties and in appearance is prepared by melt-kneading (A) 20-58 parts by weight of a saturated polyester resin and (B) 42-80 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading 100 parts by weight of the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups selected from an amino group, a carboxylic acid anhydride group, a hydroxyl group and a ##STR1## wherein both X and Y are oxygen atoms or sulfur atoms, or either X or Y is an oxygen atom and another is a sulfur atom, or (D) 0.

Abstract: A one-piece two-way voice communication earset is situated in or at the ear of the user and is operated hands-free. It includes either two separated microphones having their outputs combined or a single bidirectional microphone. In either case, the earset treats the user's voice as consisting of out-of-phase signals that are not canceled, but treats ambient noise, and any incidental feedback of sound from received voice signals, as consisting of signals more nearly in-phase that are canceled or greatly reduced in level. The microphones are preferably electret microphones. In addition, a logarithmic amplification circuit reduces residual ambient noise during non-speaking intervals. The earset includes a receiver coupled to a communication medium and a speaker coupled to the receiver for emitting sound from received voice signals primarily to the user's ear canal.