Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hirofumi Uchida

Tatsuro Juri

Tatsushi Bannai

Takeshi Otsuka

Keiichi Ishida

Masakazu Nishino

Masaru Higashionji

Shiro Kato

Masatoshi Taniguchi

Hideki Ohtaka

Shigeru Awamoto

Hiroshi Yohda

Ryoji Asada

Kazumasa Motoda

Shoji Nishikawa

Nobukatsu Okuda

A video signal producing system includes an imaging device for obtaining progressive imaging signals having various frame rates, a recording device for recording an output signal of the imaging device and a reproduction device for reproducing a recording signal obtained from the recording device. The imaging device includes a frame rate converting portion for converting the imaging signals to an output having a predetermined frame rate and the reproduction device changes a reproduction speed in response to each of the various frame rates so as to generate an output having a substantial number of frames such that the substantial number of the frames assumes a predetermined value.

Video signal producing system and video signal recording/reproducing device in that system

For conversion of a first video signal into a second video signal of a different format, a second auxiliary data packet is generated from a header carrying location data for multiplexing a first auxiliary data packet and main data of a first auxiliary data packet in the first video signal, and is multiplexed with the second video signal. For conversion from the second video signal into the first video signal, the first auxiliary data packet is generated from the header and the main data of the second auxiliary data packet, and multiplexed at the location determined by the location data in the first video signal.

Signal processing apparatus and signal processing method for locating a lost position of auxiliary data

Before a process design stage of judging whether a process flow involves any problems, items and standards of a process PAC, which is a PAC of a process necessary for development of a manufacturing process, and of an element PAC, which is a PAC of an element technology used in the process are set, while linking the process PAC and the element PAC with each other.

Manufacturing process developing method for semiconductor device

Digital signal processing method

Apparatus is adapted for recording and reproducing compressed video data in a selected one of two recording formats, of which a first format is for recording the compressed video data in N (N&gE;3, and representing an integer) number of tracks on a magnetic tape by dividing the video data into N number of groups, and a second format is for recording data, as auxiliary data independent from the compressed video data, in two of the tracks at both ends, and the compressed video data in (N&minus;2) number of the tracks. In the second recording format, the recording is carried out by setting a data length of an error correction code for sync blocks longer than a data length of another error correction code for sync blocks in the first recording format.

Magnetic recording and reproducing apparatus of helical scan type

A video signal processing apparatus which receives a digital video signal having arrangement of pixels frame by frame as an input, performs compressively coding to the digital video signal, and reproduces compressively coded data, comprises blocking unit for performing block dividing process by dividing the video signal of one frame into first blocks having a first format and second blocks having a second format which is different from the first format, performing block changing process by changing the format of the second blocks to the first format, and producing a converted video signal composed of plural blocks having the first format; and compressive coding unit for performing compressive coding including discrete cosine transform process to the converted video signal produced by the blocking unit.

Video signal processing apparatus, and video signal processing method

A video image of one frame is divided into a plurality of super blocks, and each super block comprises a plurality of macro blocks. A video segment comprising five macro blocks taken out from five super blocks located apart from each other on the video image, and data compression operation is applied in the video segment. After data compression, the macro blocks in the video segment are rearranged in the original order, and are formed to corresponding SYNC block data to record on a magnetic tape.

Apparatus for producing a legible video image during high speed

Data rates of a first video signal and a second video signal which are significantly different are converted to respective predetermined data rates, and both the video signals of one frame are divided into respective numbers of macro block. A ratio of the number of macro block of the first video signal to the number of macro block of the second signal is made to 1:n, where n is a natural number, and a ratio of the number of pixel in one macro block of a color difference signal of the first video signal to the number of pixel in one macro block of the color difference signal of the second video signal is made to 1:m, where m is a natural number. A ratio of the data rate of the color difference signal of the first video signal to the data rate of the color difference signal of the second video signal is made to 1:n.times.m and a ratio of a moving speed of a magnetic tape in the first video signal to a moving speed of the magnetic tape in the second video image is made to 1:n.

Apparatus for recording and reproducing a digital video signal

Digital video signal of one frame is converted to macro blocks which are arranged in a predetermined order in one rectangular block. The macro blocks are converted to synchronizing block data and are recorded in a predetermined number of tracks of a magnetic tape. In high speed reproducing operation, a tape running speed is selected to a reference speed at which scanning areas of the tracks of successive frames having the same track number are shifted in a direction every frame number, and video data which are on every other frame are arranged on the reproduced video image.

Apparatus for recording and reproducing digital video signal

In a video signal digital magnetic recording and/or reproducing apparatus, an input image data array is rearranged into a different data array appropriate for data compression and then subjected to a data compression by variable length coding. The resulting data are rearranged after the data compression and then recorded sequentially onto a video track of a magnetic tape in the same order as that in the frame. In a high-speed playback mode, only the lower frequency component data is decoded every sync block, so that the data reproduced from one video track adjoin each other in the playback picture on the screen.

Growing community of inventors

Osaka, Japan

Hirofumi Uchida