1
Tatsuro Juri, Akira Iketani, Chojuro Yamamitsu, Akifumi Ide: Block encoder. Matsushita Electric Industrial, Spencer & Frank, September 1, 1987: US04691329 (114 worldwide citation)

A block encoder comprises first block generating means for constituting a three-dimensional large-size block, and a plurality of second block generating means for dividing the large size block into small size blocks. The small size blocks of two dimensions and three dimensions are changed over adapt ...


2
Masakazu Nishino, Chojuro Yamamitsu, Akifumi Ide, Akira Iketani, Tatsuro Juri: Compressed video signal recording/variable-speed reproduction apparatus. Matsushita Electric Industrial, Stevens Davis Miller & Mosher, June 30, 1992: US05126852 (86 worldwide citation)

A video signal recording/reproducing apparatus which records pictures by compressing the video signal in multiple field units and reproduces an signal by the expansion process, and which continuously and repeatedly outputs each field of the reproduced television signal on the screen by use of a fiel ...


3
Yuji Fujiwara, Masakazu Nishino, Seiichi Takeuchi, Kazuhiro Wake, Akifumi Ide, Toyohiko Matsuda, Masaaki Kobayashi, Yoshitomi Nagaoka: Method and apparatus for transmitting, encoding and decoding video signal and recording/reproducing method of optical disc. Matsushita Electric Industrial, RatnerPrestia, September 2, 2003: US06614846 (25 worldwide citation)

The present invention includes a motion vector detector for detecting motion vectors using a first image signal of high resolution; a resolution reducer for creating a second image signal of low resolution from the first image signal; an image signal interpolater for interpolating the second image s ...


4
Saburo Tazaki, Akifumi Ide: Method and apparatus for producing a binary information for an information transmission. Matsushita Electric Industrial, Cushman Darby & Cushman, June 11, 1985: US04523181 (18 worldwide citation)

Method and apparatus for producing a binary information by a process comprising the steps of: dividing an input binary data sequence which has a predetermined bit cell length into blocks of a first data pattern thereby forming data blocks; converting information of said data blocks of a first data p ...


5
Akira Iketani, Chojuro Yamamitsu, Akifumi Ide, Masakazu Nishino, Tatsuro Juri, Hideki Ohtaka, Chiyoko Matsumi: Digital video signal recording/reproducing apparatus. Matsushita Electric Industrial, Wenderoth Lind & Ponack, January 11, 1994: US05278706 (7 worldwide citation)

In a digital video signal recording/reproducing apparatus for recording digital VCR video and audio signals by using a rotary cylinder, for a video signal with a frame frequency fN of 30 Hz or 29.97 Hz, the rotating frequency of the cylinder is set to 2.5 times fN. On the other hand, for a signal wi ...


6
Akifumi Ide, Chojuro Yamamitsu: Component video signal magnetic recording and reproducing apparatus including means for expanding and compressing luminance and color difference signals. Matsushita Electric Industrial, Spencer & Frank, January 12, 1988: US04719519 (5 worldwide citation)

A video signal recording and reproducing apparatus wherein in the recording mode, a luminance signal and a pair of color difference signals are divided into two groups each to be alloted for each horizontal scan period. The divided luminance signal is expanded along the time axis to such an extent a ...


7
Chiyoko Matsumi, Akira Iketani, Akifumi Ide, Tatsuro Juri: Digital signal recording method. Matsushita Electric Industrial, Wenderoth Lind & Ponack, May 31, 1994: US05317457 (4 worldwide citation)

A specific section provided in a track is set in a DC free state, and during reproducing, accurate tracking is conducted on the basis of the crosstalk from the pilot tone superposed in the adjacent tracks in this DC free section. Alternatively, a pilot tone is generated only in a specific section pr ...