Abstract: A disc storage apparatus includes at least one disc having at least one recording surface, at least one head associated with the at least one recording surface for recording data on the at least one recording surface, a decoder circuit which receives coded data from the at least one head, decodes the coded data to parallel data, and outputs the parallel data, and a disc control unit which receives the parallel data from the decoder circuit and outputs the parallel data outside the disc storage apparatus. The apparatus may further include a host interface control unit coupled to a host computer and the disc control unit, wherein the disc control unit outputs the parallel data to the host computer via the host interface control unit, and a buffer memory which stores the parallel data to be outputted to the host computer.

Abstract: A data processing method of recording data on a recording medium mounted on an information recording apparatus. The data processing method includes the steps of dividing, in a disk controller, parallel data constituted by p bits transferred from a high-rank device into data each having q bits, where p and q are numbers; transferring the data each having q bits from the disk controller to an encoder as parallel data constituted by q bits; encoding, in the encoder, the data each having q bits to generate recording signals corresponding to data to be recorded; and recording the recording signals on the recording medium, thereby recording the data to be recorded on the recording medium.

Abstract: A disc storage apparatus includes at least one disc having at least one recording surface, a disc control unit for receiving a first number of write data, and outputting, through a plurality of lines, a second number of write data selected from the first number of write data, where the first number of write data and the second number of write data are each at least two write data, an encoder circuit coupled to the disc control unit through the plurality of lines for receiving the second number of write data from the disc control unit through the plurality of lines, encoding the second number of write data in parallel to produce coded data, and outputting the coded data for recording on the at least one recording surface, and a microprocessor for designating the second number of write data to be selected from the first number of write data, outputted by the disc control unit through the plurality of lines, and received by the encoder circuit from the disc control unit through the plurality of lines.

Abstract: A disc storage apparatus includes a disc having at least one recording surface, a head associated with the recording surface for recording data on the recording surface during a data write operation, and for reproducing data from the recording surface during a data read operation, a disc control unit for receiving data and outputting parallel data during the data write operation, and for receiving parallel data and outputting data during the data read operation, and an encoder/decoder circuit for receiving the parallel data from the disc control unit and outputting data to the head to be recorded on the recording surface during the data write operation, and for receiving from the head data reproduced from the recording surface and outputting parallel data to the disc control unit during the data read operation.

Abstract: A sync signal generator of a television receiver for use in a vehicle has a phase reset detector for gradually absorbing a phase fluctuation of an input sync signal which occurs due to a ghost phenomenon or a fading phenomenon and reducing a phase fluctuation. The sync signal generator provides a sync signal synchronized with an output signal of the phase reset signal detector. Thus, a stable sync signal without a sudden change in phase can be obtained although it is synchronized with the input sync signal.

Abstract: A focusing apparatus for a video camera or the like in which a change-over between automatic focusing and manual focusing is possible includes an endlessly rotatable and hand-worked manipulator, a detector for detecting the direction and amount of manipulation or rotational movement of the manipulator, and a controller/driver for moving a part of the optical elements in an optical system along its optical axis direction in a direction corresponding to the direction of manipulation of the manipulator detected by the detector and by a distance corresponding to the amount of manipulation of the manipulator detected by the detector, thereby taking the focus.

Abstract: If information is to be recorded on and reproduced from a recording medium in correspondence between a code train in the form of a run-length-limited code and the positions of the leading edge and the trailing edge data of a status transition pattern such as pits, recording domains, a sync signal is inserted at regular intervals in the information converted in the form of the run-length-limited code. The sync signal is constituted by a code train capable of deciding that the sync signal includes a code not existing in the conversion rule into a run-length-limited code during reproduction using a leading edge data or trailing edge data relative to the transition pattern.

Abstract: A slide type cassette loading apparatus includes a loading section for receiving a tape cassette to move the same between an inlet/outlet position and a reference position for loading, and a movable chassis for sliding the cassette, located in the reference position, to a recording/reproducing position while carrying the cassette on the movable chassis. The loading section is of a double structure type which has an outer cassette holder pivotable relative to the movable chassis and an inner cassette holder supported to the outer cassette holder. The inner cassette holder is mounted on the outer cassette holder so as to make a pivotal movement together with the outer cassette holder and be movable in slide directions of the cassette, and is operatively coupled to the movable chassis so as to be movable together with the movable chassis.

Abstract: In a magnetic video recording/reproducing apparatus having a recording circuit for recording two kinds of video signals for different aspect ratios a.sub.1 and a.sub.2, where a.sub.1 >a.sub.2, a reproduced signal for aspect ratio a.sub.1 is subjected to a time-axis processing and then delivered to a monitor television having the aspect ratio a.sub.2 in order to avoid a picture on the monitor television from being so distorted as to be elongated vertically. During the time-axis processing, a Y/C interleave set-up processing and a time-axis variation correcting processing are also carried out as necessary. A reproduced signal for aspect ratio a.sub.2 is subjected to a time-axis processing and then delivered to a monitor television having the aspect ratio a.sub.1 in order to avoid a picture on the monitor television from being so distorted as to be elongated horizontally.

Abstract: An optical pickup device having a dust blocking function according to the present invention includes a casing having an opening therein, an optical system disposed within an interior of the casing and having photoelectric elements optically coupled with each other, an objective lens disposed inside the opening as spaced from an edge of the opening to be optically coupled with the optical system, driving device for moving the objective lens to a desired position, and a resilient member for sealing a gap between the edge of the opening and the object lens, whereby the resilient member enables movement of the object lens while preventing any intrusion of dust into an interior of the pickup device having the optical system incorporated therein.

Abstract: Disclosed is a pattern test apparatus for detecting a fault on the basis of comparison/collation between a test reference pattern and a test target pattern, the apparatus being arranged such that a picture element area is defined by a circle with a predetermined radius on a reference matter having at test reference pattern, and when the number of the picture elements located on the reference pattern is larger than the number of the picture elements located outside the reference pattern, a part of the reference pattern corresponding to a picture element located in the center of the circle is deleted. By such an arrangement, the test reference pattern can be made analogous to the real test target pattern regardless of the shape thereof, so that misjudgment of a normal test target pattern for a fault pattern can be prevented.

Abstract: A multiplex transmission method using especially a vestigial-sideband amplitude-modulated carrier modulated by a video signal. The method includes modulating a carrier having a quadrature phase with respect to an amplitude-modulated carrier by a multiplex-transmitted signal such as a digital-coded signal with a lower level as compared with the amplitude-modulated carrier, suppressing signal components of a signal obtained by modulating the carrier by a multiplex-transmitted signal, which is located near the carrier frequency, combining the result with the amplitude-modulated carrier, and thereafter transmitting the combined signal.

Abstract: A device for decoding coded digital signals for every symbol consisting of a plurality of binary signals comprises first circuit for generating a first reliability for every binary signal; hard decided from the received or reproduced signal, in the symbol and second circuit for generating a second reliability for every symbol consisting of n binary signals on the basis of the first reliability, whereby decoding processing e.g. soft decision decoding is effected for every signal, depending on the second reliability.

Abstract: A thermal transfer printing apparatus comprises a recording sheet conveying passageway of a chuckless type which does not require a chuck mechanism for affixing a recording sheet to a platen roller. The recording sheet conveying passageway is constituted in loop form by at least one guide member and at least one roller for conveying the recording sheet and has at one end a recording sheet ejector for ejecting the recording sheet to outside from the conveying passageway. The recording sheet is moved through the conveying passageway repeatedly for a number of times required to perform superimposing printing by means of a thermal head. Upon completion of printing, the recording sheet is ejected from the apparatus to outside via the recording sheet ejector.

Abstract: An apparatus for driving a brushless motor, in which a ripple appearing in the rotation torque of the motor is cancelled by driving the motor with a signal current whose phase is opposite to that of and which has a waveform symmetrical with that of the torque ripple waveform, so that the motor can rotate accurately without any speed variation. In order to obtain such a signal current waveform, counter-electromotive forces induced in the stator coils of the motor are detected, and the level of the signal indicative of the detected counter-electromotive forces is controlled depending on the load and rotation speed of the motor to provide a control signal for controlling the motor drive current.