1
Atsushi Nagata, Yutaka Uekawa, Takanori Senoo, Kenichi Takahashi: Method and apparatus for protection of signal copy. Matsushita Electric Industrial, Wenderoth Lind & Ponack, December 18, 1990: US04979210 (292 worldwide citation)

An apparatus for the protection of signal copy for prevention unauthorized copying of music software such as records, compact discs and music tape by recording is arranged such that when recording audio signals on a medium, certain supplemental information is added to the audio signal to be recorded ...


2
Atsushi Nagata, Yutaka Uekawa, Takanori Senoo, Kenichi Takahashi: Method and apparatus for the protection of signal copy. Matsushita Electric Industrial, Wenderoth Lind & Ponack, December 17, 1991: US05073925 (217 worldwide citation)

An apparatus for the protection of signal copy for preventing unauthorized copying of music software such as records, compact discs and music tape by recording is arranged such that when recording audio signals on a medium, certain supplemental information is added to the audio signal to be recorded ...


3
Ryoichi Wada, Mitsuharu Tsuchiya, Kanji Odagi, Takanori Senoo: Digital audio signal recorder. Matsushita Electric Industrial, Wenderoth Lind & Ponack, July 28, 1981: US04281355 (34 worldwide citation)

A digital audio signal recorder for obtaining coded signals having a first check code generator for generating the sum of module 2 for each bit of pieces of predetermined sampled data; and further has a circuit operatively coupled to said generator for arranging the sampled data, a first check code ...


4
Takanori Senoo: Highly-efficient time-division data multiplexing apparatus. Matsushita Electric Industrial, Wenderoth Lind & Ponack, May 10, 1994: US05311517 (10 worldwide citation)

A time-division data multiplexing apparatus has first through Nth memories for temporarily storing first through Nth data blocks, and first through Nth address control circuits for controlling the first through Nth memories, respectively. Any nth address control circuit (n=1,2, . . . , N) calculates ...


5
Ryoichi Wada, Takanori Senoo, Kanji Odagi: Apparatus for detecting recording and reproducing state. Matsushita Electric Industrial, Wenderoth Lind & Ponack, June 16, 1981: US04274115 (6 worldwide citation)

An apparatus for detecting the recording and reproducing state of a video tape recorder used in conjunction with a pulse code modulation adapter and including a signal processor for comparing for a predetermined period data from signals transmitted from the pulse code modulation adapter apparatus to ...


6
Takanori Senoo, Nobuyasu Takeguchi, Kazuo Nomura: Synchronously operatable PCM recording processor. Matsushita Electric Industrial, Wenderoth Lind & Ponack, April 26, 1983: US04381525 (5 worldwide citation)

A PCM recording processor which is synchronously operatable is disclosed. Two kinds of clock signals and two kinds of synchronizing signals enable two PCM recording processors to operate so as to be synchronized with each other. One master mode processor sends signals to plural slave mode processors ...


7
Ryoichi Wada, Mitsuharu Tsuchiya, Takanori Senoo, Kanji Odagi: Digital signal processor for use in recording and/or reproducing equipment. Matsushita Electric Industrial, Wenderoth Lind & Ponack, May 29, 1984: US04451919 (4 worldwide citation)

A digital signal processor for recording an analog signal in the form of a PCM signal and/or for reproducing the PCM signal in the form of an analog signal. It has functions of generating a first and a second check code each by performing a modulo 2 operation and of adding a third check code to each ...