Victor Company of Japan, Limited

Yukigaya Precision Industry Co., Ltd.

Tooru Yamagishi

Toyotaka Machida

Shunichi Shichijo

Atsumi Hirata

Tatsuya Shinyagaito

Terumasa Kuramoto

Yoshinao Kobayashi

Kikuji Saito

Kazuyoshi Ishii

A decoding apparatus decodes efficiency coded picture data. The efficiency coded picture data are first decoded per predetermined picture unit, such as slice. The decoded picture data are stored into a memory. Writing and reading to and from the memory are controlled as follows: A writing operation of a first picture unit to the memory starts when a reading operation of a second picture unit from the memory is finished. Here, the second picture unit precedes the first picture unit and display locations of the first and second picture units are identical to each other. The writing operation goes into a waiting mode while the reading operation is being executed.

Apparatus and method of decoding high efficiency coded picture data with

Picture data are reproduced by fast forward (F.F.) or fast backward (F.B.) reproduction from moving picture data including picture frames belonging to the first picture frame group obtained by compressing picture data in accordance with intra-frame method and picture frames belonging to the second picture frame group obtained by compressing picture data in accordance with inter-frame prediction method and further coded at a high efficiency by a high efficiency compression system. During the real time reproduction, an average interval between two adjacent picture frames belonging to the first frame group is obtained. Further, during F.F. or F.B. reproduction, a search start position of a first picture frame to be next reproduced after a second picture frame now being reproduced is set based on the obtained average interval, the first and second picture frames belonging to the first picture frame group, and the first picture frame is started to be searched from the set search start position.

Method of reproducing pictures by fast forward and fast backward

Bed with a wash tub for pubes

An image data output apparatus having a plurality of memories, a plurality of latch circuits corresponding in number to the memories, a data selector, and a timing pulse generator. A plurality of pixel data corresponding to a plurality of pixels constituting an image are stored in the memories. A plurality of read clock signals having different timings are supplied from the timing pulse generator to the memories to read pixel data from the memories at different timings. The read-out pixel data are applied at different timings to the latch circuits. A plurality of latch signals having different timings are supplied from the timing pulse generator to the latch circuits to thereby make definite the pixel data at the latch circuits at different timings. The definite pixel data are supplied to the data selector to which a select signal from the timing pulse generator is applied. Thus, the pixel data are sequentially outputted one after another from the data selector.

Image data output apparatus

A rotation control apparatus controls a rotation frequency of a disc which is to be rotated at a constant linear velocity. The rotation control apparatus comprises a circuit for obtaining a first signal having a first frequency proportional to a rotation frequency of the disc, a circuit for comparing the first signal with a second signal having a second frequency which successively increases, and a control device for obtaining a present rotation frequency of the disc from the second signal which is obtained at a time when the first and second frequencies become equal to each other. The control device supplies to a motor which rotates the disc a driving signal which is obtained from the present rotation frequency in a recording mode, so that the disc rotates at the constant linear velocity.

Rotation control apparatus for controlling rotation frequency of an

An information recording disc has a connecting region formed between a parallel program recorded region containing a plurality of parallel information programs and a single program recorded region containing a single information program which is to be reproduced after one of the parallel information programs is reproduced. Each of the parallel program recorded region and the connecting region includes track turns having vertical blanking parts recorded with vertical blanking periods of video signals, and at least one of the vertical blanking parts in each track turn is recorded with an address signal including a first code indicating whether an information program recorded in a track turn of a region is a single information program or a parallel information program, a second code indicating whether the region is the parallel program recorded region or the connecting region, a fourth code indicating the number of information programs recorded in the region, and a fifth code indicating the program number of the program recorded in the region. A reproducing apparatus includes a reproducing element for reproducing information signals from the disc, and the reproducing element is kicked within the vertical blanking part based on the value of the reproduced fourth code during a normal reproduction of a parallel information program.

Information signal recording disc comprising a connected region formed

An information signal recording disc comprises a first recorded region in which an information signal at least including a video signal is recorded, and a second recorded region in which an end signal is intermittently recorded. The end signal is used to forcibly and automatically return a reproducing element of a disc reproducing apparatus from a playing position to a rest position. The second recorded region is provided at a position prior to the first recorded region in a direction of a reproducing sequence of the recorded signals on the information signal recording disc. The disc reproducing apparatus comprises a detecting circuit for detecting the reproduced end signal, and a controller. The controller controls the detecting circuit so that the detecting circuit is made substantially inoperative in a state where the disc reproducing apparatus is coupled to an external device having a discriminating function.

Information signal recording disc recorded with an end signal for

A digital signal decoding system comprises a terminal for receiving a digital signal through a transmission path, which digital signal is encoded so that an error in one bit can be corrected in each of code words which are constituted by adding check bits to information bits and is modulated according to a self clock modulation system, a circuit for obtaining a demodulated signal by demodulating the digital signal, a first circuit for generating an encoded data and a clock signal from the demodulated signal, a circuit for generating an error possibility data from an output of the first circuit, which error possibility data assumes a first logic value at a bit position corresponding to a bit of the encoded data whereat an error does not exist and assumes a second logic value at a bit position corresponding to a bit of the encoded data whereat the possibility that an error exists is high, a memory circuit for pre-storing a first table containing the priority of a decoding sequence, and a circuit for obtaining the priority of the decoding sequence by referring to the first table based on the encoded data and the error possibility data and for obtaining a decoded data of an original data by correcting error in one or a plurality of bits of the encoded data and/or the error possibility data based on the priority.

Digital signal decoding system

A signal recording system for recording signals on a disc comprises a circuit for generating a modulated signal by subjecting a control program to a self clock modulation based on a reference clock and then to a band limitation to an audio signal band, which control program is transmitted in terms of blocks each having a fixed length, a circuit for generating a block discrimination signal for discriminating a beginning or end of each block, which block discriminating signal has a fundamental frequency which is different from the reference clock frequency of the modulated signal and is within the audio signal band, a circuit for time-division-multiplexing the block discrimination signal to a time period in which the modulated signal is not transmitted, and a circuit for recording the time division multiplexed signal and at least the video signal on the disc. The control program comprises control commands of a disc reproducing apparatus which plays the disc having track turns recorded with the control program at least together with the video signal and input and output commands and internal processing commands of an external device which has a discriminating function and is coupled to the disc reproducing apparatus.

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Tokyo, Japan

Tooru Yamagishi