Patents by Inventor Tatsuaki Doumura

Tatsuaki Doumura 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).

  • Patent number: 5526127
    Abstract: The video tape recorder includes key input unit for inputting the "G-code", decoder for decoding the "G-code", teletext signal extracting circuit for extracting the program list including the VPS code multiplexed on the vertical blanking period from the video signal, and teletext control unit and preset control unit, implemented by a microcomputer, for carrying out a predetermined control. The "G-code" input from key input unit 11 is decoded by decoder. Preset control unit causes teletext control unit to extract the VPS code of the program specified by the "G-code" from the program list transmitted by the broadcasting station specified by the "G-code". Recording is controlled based on the extracted VPS code. Therefore, even when the time of broadcasting of the preset program is changed by the broadcasting station, the program can be recorded accordingly.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: June 11, 1996
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Naoki Yonetani, Tatsuaki Doumura
  • Patent number: 5107335
    Abstract: A second IF signal is counted either directly or indirectly. An AFC operation is performed based on the counting result. A plurality of count periods (A1, C1) are provided within a video signal period (Y+H) including a horizontal blanking period, and the plurality of count periods (A1, C1) are randomly shifted for each field. An AFC operation is performed based on a plurality of counting results in a plurality of field periods which correspond to one cycle of an energy diffusion signal.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: April 21, 1992
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Takao Nishiyama, Hisao Okada, Tatsuaki Doumura
  • Patent number: 4879611
    Abstract: The record mode setting apparatus comprises a VPS setting switch (41), a VPS decoder (3), a code latch circuit (7), a VPS control circuit (26) and a code memory (27). When the VPS setting switch (41) is turned on while a recording means (16) is ready for recording, the VPS decoder (3) detects a VPS code out of a video signal and the VPS code is stored in the code memory (27). Thereafter, the VPS code detected by the VPS decoder (3) is applied to the code latch circuit (7). The VPS control circuit (26) compares the VPS code of the code latch circuit (7) with the VPS code stored in the code memory (27) and stops the recording means (16) when both do not coincide with each other.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: November 7, 1989
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kumiko Fukui, Tatsuaki Doumura, Shigeo Okamoto