Patents by Inventor Hidenori Hoshi
Hidenori Hoshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6539057Abstract: 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.Type: GrantFiled: October 7, 1997Date of Patent: March 25, 2003Assignee: Canon Kabushiki KaishaInventor: Hidenori Hoshi
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Publication number: 20020191948Abstract: 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.Type: ApplicationFiled: August 9, 2002Publication date: December 19, 2002Inventor: Hidenori Hoshi
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Patent number: 6374033Abstract: There is provided a signal processing apparatus for performing signal processing of image data in units of blocks each consisting of n (vertical)×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×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.Type: GrantFiled: July 17, 1997Date of Patent: April 16, 2002Assignee: Canon Kabushiki KaishaInventor: Hidenori Hoshi
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Publication number: 20020031273Abstract: 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).Type: ApplicationFiled: September 6, 2001Publication date: March 14, 2002Inventors: Shingo Ikeda, Katsumi Karasawa, Hidenori Hoshi, Akihiro Oishi
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Publication number: 20010055477Abstract: There is provided a signal processing apparatus for performing signal processing of image data in units of blocks each consisting of n (vertical)×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×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.Type: ApplicationFiled: July 17, 1997Publication date: December 27, 2001Inventor: HIDENORI HOSHI
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Patent number: 6301390Abstract: 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).Type: GrantFiled: September 16, 1996Date of Patent: October 9, 2001Assignee: Canon Kabushiki KaishaInventors: Shingo Ikeda, Katsumi Karasawa, Hidenori Hoshi, Akihiro Oishi
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Patent number: 6263107Abstract: 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).Type: GrantFiled: April 2, 1998Date of Patent: July 17, 2001Assignee: Canon Kabushiki KaishaInventors: Shingo Ikeda, Katsumi Karasawa, Hidenori Hoshi, Akihiro Oishi
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Patent number: 6219486Abstract: A reproducing apparatus is provided in which the recording data, having a predetermined number of image data divided into synchronizing blocks, is reproduced at a speed different from that in the recording mode. The apparatus has a memory unit having a memory capacity of two fields. The reproduced image data is written into one of the field areas in the memory unit. The field areas in the memory unit into which the data should be written are switched at a predetermined period. The data is read out from the field area in which the writing operation is not executed.Type: GrantFiled: June 5, 1995Date of Patent: April 17, 2001Assignee: Canon Kabushiki KaishaInventor: Hidenori Hoshi
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Patent number: 5943444Abstract: A construction circuit which constructs data of nondecodable blocks by using interpolation data generated by a predetermined method, a movement estimation circuit which estimates the movement of the nondecodable blocks on the basis of the movement of the blocks surrounding the nondecodable block, and an error pattern detecting circuit which detects an error state of the surrounding blocks and controls the movement estimation circuit on the basis of the error state, are provided. The construction circuit constructs nondecodable data on the basis of the result of the estimation by the movement estimation circuit. An image reproducing apparatus is provided which is capable of obtaining a reproduced image having reduced visual deterioration by estimating movement on the basis of the blocks surrounding the nondecodable block when the data of the nondecodable block is reproduced and detecting the error state of the adjacent blocks.Type: GrantFiled: October 11, 1996Date of Patent: August 24, 1999Assignee: Canon Kabushiki KaishaInventors: Tetsuya Shimizu, Hidenori Hoshi, Shinji Ohnishi
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Patent number: 5930453Abstract: In transferring image data between a first memory for storing image data in a first sequence and inputting and outputting the image data from and to a first data bus and a second memory for storing image data in a second sequence different from the first sequence and inputting and outputting the image data from and to a second data bus, the permission and the inhibition of the writing of the transferred image data to a transfer destination are controlled and the error detection/correction encoding/decoding is effected during the transfer to facilitate the address management and permit high speed processing of the image data.Type: GrantFiled: August 31, 1994Date of Patent: July 27, 1999Assignee: Canon Kabushiki KaishaInventors: Tetsuya Shimizu, Makoto Shimokoriyama, Mitsugu Tanaka, Katsumi Karasawa, Yoshiki Ishii, Yasuyuki Tanaka, Hidenori Hoshi
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Patent number: 5815636Abstract: There is provided an image reproducing apparatus comprises a reproduction circuit for reproducing an image signal which was divided into blocks, an error correction circuit for correcting an error of the image signal reproduced by the reproduction circuit, a constructing circuit for constructing an image signal for the image signal which cannot be corrected by the error correction circuit, and a control circuit for controlling the image signal constructing operation of the constructing circuit on the basis of error correction situations of the blocks which are adjacent to the block including the uncorrectable image signal, wherein a natural image is obtained even for an image of a hard movement and a deterioration of a picture quality can be prevented.Type: GrantFiled: July 24, 1997Date of Patent: September 29, 1998Assignee: Canon Kabushiki KaishaInventors: Akio Fujii, Hidenori Hoshi
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Patent number: 5809209Abstract: In a video signal recording apparatus in which video signals are digitized and, after the data arrangement has been transformed, are recorded on a recording medium, the video signals corresponding to one picture are recorded divisionally in a plurality of tracks, and a transforming pattern of the data arrangement is made to change by every one picture of video signals.Type: GrantFiled: December 14, 1994Date of Patent: September 15, 1998Assignee: Canon Kabushiki KaishaInventors: Hidenori Hoshi, Akio Aoki
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Patent number: 5799130Abstract: An apparatus for digitizing video signals and recording the digitized video signals on a recording medium. Digital video signals corresponding to one picture are subjected to a first arrangement transformation in which the arrangement of signals is transformed in each picture, and then to a second arrangement transformation in which the arrangement of signals is transformed in a plurality of pictures. The digital video signals after the first and second transformations are recorded by successively forming a plurality of parallel tracks.Type: GrantFiled: December 13, 1996Date of Patent: August 25, 1998Assignee: Canon Kabushiki KaishaInventor: Hidenori Hoshi
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Patent number: 5790746Abstract: An apparatus for reproducing digital information from a recording medium having a plurality of parallel tracks and digital information recorded thereon as n-channel (n being an integer greater than or equal to 2) digital signals. The n-channel digital signals are reproduced by n-reproducing heads. The digital information contained in the reproduced signals is stored in a storage device. Discriminating data is obtained for determining which of the n-channel digital signals reproduced correspond to the reproducing heads. The timing of an access device, accessing the storage device for performing a predetermined processing of the digital signals stored in the storage device relative to the reproducing timing of the digital information reproduced by the n reproducing heads, is controlled in accordance with the discrimination data.Type: GrantFiled: June 7, 1995Date of Patent: August 4, 1998Assignee: Canon Kabushiki KaishaInventors: Motokazu Kashida, Hidenori Hoshi, Kenichi Nagasawa, Shinichi Yamashita
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Patent number: 5629811Abstract: An apparatus for digitizing video signals and recording the digitized video signals on a recording medium. Digital video signals corresponding to one picture are subjected to a first arrangement transformation in which the arrangement of signals is transformed in each picture, and then to a second arrangement transformation in which the arrangement of signals is transformed in a plurality of pictures. The digital video signals after the first and second transformations are recorded by successively forming a plurality of parallel tracks.Type: GrantFiled: March 9, 1994Date of Patent: May 13, 1997Assignee: Canon Kabushiki KaishaInventor: Hidenori Hoshi
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Patent number: 5570199Abstract: Motion in an image signal to be transmitted is detected to produce motion information. An encoded image signal comprising the image signal and the motion information is transmitted to a transmitting path. The encoded image signal is received from the transmitting path, and code errors are concealed according to an operating characteristic determined on the basis of the motion information.Type: GrantFiled: December 8, 1993Date of Patent: October 29, 1996Assignee: Canon Kabushiki KaishaInventors: Yasuyuki Tanaka, Hidenori Hoshi
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Patent number: 5561532Abstract: An apparatus includes a reproducing circuit for reproducing an encoded image signal from a recording medium, a decoding circuit for decoding the image signal reproduced by the reproducing circuit, a movement detection circuit for detecting a movement of an image signal which cannot be detected by the decoding circuit, and outputting a signal indicating the movement level of the undecodable signal, and a construction circuit for constructing an image signal with respect to the undecodable image signal on the basis of the output from the movement detection means. Even when an undecodable image signal is an intermediate signal between signals with and without a movement, a good reproduced image is obtained.Type: GrantFiled: March 30, 1994Date of Patent: October 1, 1996Assignee: Canon Kabushiki KaishaInventors: Shinji Ohnishi, Makoto Shimokoriyama, Hidenori Hoshi, Izumi Matsui, Akiyoshi Hamanaka
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Patent number: 5555230Abstract: An apparatus for reproducing digital information from a recording medium having a plurality of parallel tracks and digital information recorded thereon as n-channel (n being an integer greater than or equal to 2) digital signals. The n-channel digital signals are reproduced by n-reproducing heads. The digital information contained in the reproduced signals is stored in a storage device. Discriminating data is obtained for determining which of the n-channel digital signals reproduced correspond to the reproducing heads. The timing of an access device, accessing the storage device for performing a predetermined processing of the digital signals stored in the storage device relative to the reproducing timing of the digital information reproduced by the n reproducing heads, is controlled in accordance with the discrimination data.Type: GrantFiled: June 7, 1995Date of Patent: September 10, 1996Assignee: Canon Kabushiki KaishaInventors: Motokazu Kashida, Hidenori Hoshi, Kenichi Nagasawa, Shinichi Yamashita
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Patent number: 5499104Abstract: An apparatus for recording a video signal and audio signals includes a recording device having a first mode in which a video signal transmitted through a compressing unit for compressing an information amount and a sum signal of the right and left signals of a stereophonic audio signal are recorded into the first area on the recording medium and a difference signal of the right and left signals of the stereophonic audio signal is recorded into a second area on the recording medium; and a second mode in which the video signal which is not transmitted through the compressing unit and the right and left signals are recorded into the first area. Thus, even when an audio signal has been after-recorded into the second area, reproduction the audio signal without a sense of disorder can be performed.Type: GrantFiled: June 16, 1993Date of Patent: March 12, 1996Assignee: Canon Kabushiki KaishaInventors: Hidenori Hoshi, Yasuyuki Tanaka
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Patent number: 5481518Abstract: An apparatus for reproducing digital information from a recording medium having a plurality of parallel tracks and digital information recorded thereon as n-channel (n being an integer greater than or equal to 2) digital signals. The n-channel digital signals are reproduced by n-reproducing heads. The digital information contained in the reproduced signals is stored in a storage device. Discriminating data is obtained for determining which of the n-channel digital signals reproduced correspond to the reproducing heads. The timing of an access device, accessing the storage device for performing a predetermined processing of the digital signals stored in the storage device relative to the reproducing timing of the digital information reproduced by the n reproducing heads, is controlled in accordance with the discrimination data.Type: GrantFiled: September 16, 1994Date of Patent: January 2, 1996Assignee: Canon Kabushiki KaishaInventors: Motokazu Kashida, Hidenori Hoshi, Kenichi Nagasawa, Shinichi Yamashita