1
Hitoaki Owashi, Hiroo Okamoto, Kyoichi Hosokawa, Takaharu Noguchi: Method and apparatus for receiving and/or reproducing digital signal. Hitachi, Antonelli Terry Stout & Kraus, December 19, 2000: US06163644 (70 worldwide citation)

A method and apparatus is provided for receiving and/or reproducing a digital signal, capable of efficiently recording a compressed, packeted digital signal and inhibiting a copy thereof. An input packet signal is added with a time stamp indicating a relative time of an arrival of the packet, and th ...


2
Hiroo Okamoto, Masuo Oku, Takaharu Noguchi, Takao Arai: Recording apparatus and reproducing apparatus for video signals. Hitachi, Antonelli Terry Stout & Kraus, May 6, 1997: US05627655 (69 worldwide citation)

In a reproducing apparatus, a generator circuit for adding copy information during the vertical blanking period of a reproduced video signal output is provided, and copy information in compliance with copy information contained in the reproduced signal is added and delivered. In a recording apparatu ...


3
Manabu Sasamoto, Nobutaka Amada, Takao Arai, Takaharu Noguchi, Hitoaki Owashi, Hideo Nishijima, Hiroaki Ono, Hiroo Okamoto: Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information. Hitachi, Antonelli Terry Stout & Kraus, June 15, 1999: US05912969 (60 worldwide citation)

An apparatus comprising a transmission system for transmitting an information signal, and a reception system including an information receiving unit for receiving the information signal, and an information recording/reproducing unit for recording/reproducing the received information signal on/from a ...


4
Frank Anton Lane, Joseph Ellis Augenbraun, Jill MacDonald Boyce, Jack Selig Fuhrer, John Goodchilde Norie Henderson, Katsuo Mohri, Masafumi Nakamura, Takaharu Noguchi, Hiroo Okamoto, Masuo Oku, Michael Allen Plotnick: Trick play data indentification methods and apparatus for use with digital video recording and playback devices. Hitachi America, Hitachi, Michael P Straub, Peter L Michaelson, Michaelson & Wallace, November 11, 1997: US05687275 (59 worldwide citation)

Methods of operating a digital video recording and playback device to identify trick play data, e.g., data that is intended for use during trick play modes of video playback device operation such as fast forward and reverse, by recording headers containing specific trick play information along with ...


5
Hiroo Okamoto, Masaharu Kobayashi, Takaharu Noguchi, Takao Arai: Method and apparatus for recording digital signals. Hitachi, Antonelli Terry & Wands, July 21, 1987: US04682332 (55 worldwide citation)

Error detection/correction codes appended to a recording signal for a PCM recorder are so arranged as to ensure detection and/or correction of a dropout or error of a data block address in the reproduction of the recording signal. In recording digital signals on a recording medium, the digital signa ...


6
Frank Anton Lane, Joseph Ellis Augenbraun, Jill MacDonald Boyce, Jack Selig Fuhrer, John Goodchilde Norie Henderson, Katsuo Mohri, Masafumi Nakamura, Takaharu Noguchi, Hiroo Okamoto, Masuo Oku, Michael Allen Plotnick: Methods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operation. Hitachi America, Hitachi, Michael P Straub, Peter L Michaelson, Michaelson & Wallace, March 17, 1998: US05729649 (39 worldwide citation)

A digital video tape recorder ("VTR") that selects data useful for generating images during trick playback operation and records the data in trick play tape segments arranged on a tape to form fast scan tracks and multi-speed playback tracks. Each fast scan track comprises trick play tape segments l ...


7
Nobutaka Amada, Shigeru Yamazaki, Takaharu Noguchi, Hideo Nishijima, Hiroaki Ono, Hiroo Okamoto, Hitoaki Owashi, Takao Arai, Yuji Hatanaka, Seiichi Saito: Digital information signal transmitting/receiving method and system. Hitachi, Antonelli Terry Stout & Kraus, February 17, 1998: US05719943 (36 worldwide citation)

A digital information signal transmitting/receiving method and system having a transmitter for transmitting an encrypted digital information signal and a plurality of receivers for receiving the encrypted digital information signal from the transmitter. The transmitter simultaneously distributes a p ...


8
Yasunori Ohara, Akira Saitou, Takeo Ohkouchi, Hiroo Okamoto, Nobutaka Amada: Image recording and reproducing apparatus. Hitachi, Antonelli Terry Stout & Kraus, September 18, 2001: US06292618 (32 worldwide citation)

An image recording and reproducing apparatus can record and reproduce both of a digital signal and an analog signal. Operations of a broadcast receiving apparatus and a recording and reproducing apparatus are integrated and superimposition of information on an analog image is realized during recordi ...


9
Hiroo Okamoto, Masaharu Kobayashi, Hiroyuki Kimura, Takaharu Noguchi, Takao Arai: Decoding method and system for doubly-encoded Reed-Solomon codes. Hitachi, Antonelli Terry & Wands, February 24, 1987: US04646301 (31 worldwide citation)

Error correction of digital signals is suited for codes having error detection and correction words, such as doubly-encoded Reed-Solomon code. In a first decoding, at least error detection is effected and flags indicating decoding conditions are added. In a second decoding, error detection for first ...


10
Manabu Sasamoto, Hiroo Okamoto, Toshifumi Takeuchi, Masaru Takahashi: Digital signal recording/reproducing apparatus. Hitachi, Antonelli Terry Stout & Kraus, October 12, 2004: US06804453 (31 worldwide citation)

A digital signal recording apparatus is disclosed, which is capable of protecting the copyright of the analog input information encoded into a first digital signal in a recording medium. A second digital signal encrypted based on the key information and the input analog signal encrypted based on the ...