Canon Kabushiki Kaisha

Hidenori Hoshi

Toshihiko Suzuki

Hiroaki Endo

Katsumi Karasawa

Yasuyuki Tanaka

Kenichi Nagasawa

Motokazu Kashida

Shinichi Yamashita

Akihiro Oishi

Shingo Ikeda

Yoshiki Ishii

Makoto Shimokoriyama

Shinji Ohnishi

Tetsuya Shimizu

Akio Fujii

Mitsugu Tanaka

Akio Aoki

Akiyoshi Hamanaka

Keiichi Fukuzawa

Izumi Matsui

A recording apparatus of this invention detects the state of management information, which pertains to a recording address of an image signal, and which is reproduced from a disk-like recording medium having a first area for the image signal and a second area for the management information. On the basis of the detection result, management data is reproduced from the first area of the disk-like recording medium. On the basis of the management data reproduced from the first area, the management information reproduced from the second area is modified. A modify unit records the modified management information in the second area.

Apparatus for recording signals on disk recording medium

A recording apparatus records, in a recording medium, moving image data and management information, concerning the moving image data and generated in accordance with the recording operation of the moving image data. In accordance with a recording start instruction, the recording apparatus starts recording of the moving image data and records, in the recording medium, information indicating that the management information has not yet been recorded. In accordance with a recording stop instruction, the recording medium stops recording of the moving image data, generates and records the respective management information, and updates the information indicating the recording status of the management information. If a decrease in electric power is detected during recording of the moving image data, the recording apparatus stops recording of the moving image data, without updating the information indicating the recording status of the management information.

Apparatus for controlling management information of signals recording on disk recording medium

There is provided a coding apparatus in which an input image signal is divided into blocks, the block data is compression coded by using an orthogonal transformation, and (n) sync blocks are produced from the (m) compression coded block data, wherein each sync block has a first area in which important data in the orthogonal transformation coded block data of a specific number of blocks is arranged and a second area in which non-important data in the orthogonal transformaton coded block data of an unspecific number of blocks is arranged. There is also provided a decoding apparatus in which an image signal is divided into blocks, the block formed block data is compression coded, and the compression coded block data is decoded on an (m) unit basis (m is a natural number), wherein the apparatus comprises a first decoding unit for decoding the coding data of the inputted (m) blocks in accordance with the inputting order on a block unit basis, a second decoding unit for decoding the coding data of the inputted (m) blocks in accordance with the order opposite to the inputting order on a block unit basis, and an output unit for integrating the data decoded by the first and second decoding units and for outputting decoding data of the (m) blocks.

Decoding apparatus and decoding method in an order opposite to the encoding order

A recording apparatus reads and stores video signals on a recording medium. The recording apparatus has a recording mode and a recording pause mode. In the recording mode, the video signals are stored in a memory, and the video signals read from the memory are recorded. In the recording pause mode, the video signals are stored in the memory by cycling through selecting storage addresses, and the recording of the video signals is terminated.

Recording apparatus having a pause mode in which video signals are written to memory by cyclically designating write addresses

An imaging apparatus comprises an image pickup unit, a recording unit for recording image data obtained by the image pickup unit on recording unit, a display unit for displaying images relating to the image data obtained by the image pickup unit, and a control unit for making different the luminance of images to be displayed on the display unit in standby mode during which the recording of image data by recording unit is stopped, from the luminance in recording mode during which the image data are being recorded by the recording unit.

Imaging apparatus displaying images in recording and standby modes with different luminances

Coding/decoding apparatus in accordance with an order opposite to the inputting order

A recording and reproducing apparatus includes a recording block for recording, on a recording medium, image data and error information indicative of presence or absence of any error in the image data, a reproducing block for reproducing the image data and the error information from the recording medium, an interpolating block for interpolating the reproduced image data on the basis of the reproduced error information, a mode change-over block for changing over a recording mode between a first recording mode in which the image data and the error information are recorded while the recording medium is transported at a first speed and a second recording mode in which the image data and the error information are recorded while the recording medium is transported at a second speed different from the first speed, and a control block for controlling and causing, in response to the change-over of the recording mode, the recording block to record the error information indicative of the presence of any error together with the image data for a predetermined period of time.

Recording and reproducing apparatus

An image processing apparatus in which an image signal is divided into blocks each comprising a plurality of pixels and a quantization and a variable length encoding are executed so that a code amount of a plurality of blocks lies within a certain range. As a plurality of blocks, the position of the block which is selected at the nth order approaches the periphery of a picture screen with an increase in value of (n).

Image processing apparatus

A coding apparatus includes a block forming unit which divides an input image signal into m, where m is an integer, blocks. A coder uses an orthogonal transformation to compression code the m blocks of data. A producing unit produces n, where n is an integer, sync blocks from the coded data of m blocks. Each of the sync blocks has a first area of a fixed length in which a low frequency component in the orthogonal coded data of a specific number of blocks is arranged, and a second area of a fixed length in which a high frequency component in the orthogonal transformation coded block data of an unspecific number of blocks is arranged.

Coding apparatus providing improved access to selected coded data

There is provided a signal processing apparatus for performing signal processing of image data in units of blocks each consisting of n (vertical)&times;m (horizontal) pixels, including a memory for storing the image data, a division unit for dividing image data in one horizontal period of the image data into burst lengths, each of which equals at least a multiple of m and in which the multiple of m&times;n is equal to or less than the capacity of the memory, and an allocation unit for allocating data sequences of the burst length at an identical row address so that all image data in the block are aligned at the identical row address.

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Yokohama, Japan

Hidenori Hoshi