Patents by Inventor Katsoutoshi Sakao

Katsoutoshi Sakao 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).

  • Data transmission device, data receiving device, data transimitting method, data receiving method, recording device, playback device, recording method, and playback method
    Publication number: 20020003815
    Abstract: A data transmission device transmits a data broadcast using a narrow unused broadcasting band in a digital broadcast, and to record the data broadcast, which has been received, on a receiving side so that the receiving side can play back the data broadcast after a data stream is totally recorded. The transmission device generates a first data stream, which is recorded on a recording medium on a receiving side, and a second data stream including audio and video data, which is transmitted as a broadcasting program. The transmission device multiplexes the first and the second data streams and then transmits the multiplexed data stream. The transmission of the multiplexed data stream is controlled so that a transmission rate for the multiplexed data stream does not exceed the maximum transmission rate, and so that a transmission rate for the first data stream becomes lower than that for the second data stream.
    Type: Application
    Filed: April 10, 2001
    Publication date: January 10, 2002
    Inventors: Ryuichiro Hisamatsu, Takamichi Mitsuhashi, Tadashi Saito, Katsoutoshi Sakao, Yasuhisa Nakajima, Hiroshige Okamoto