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Patent Searching and Data


Title:
VIDEO SIGNAL FREQUENCY TRANSMITTING METHOD
Document Type and Number:
Japanese Patent JPH02274032
Kind Code:
A
Abstract:

PURPOSE: To miniaturize the circuit scale by reproducing a sampling clock synchronized with the sampling clock of a transmission side on a reception side.

CONSTITUTION: In order to reproduce a sampling clock synchronized with the sampling clock of the transmission side on the reception side, a signal obtained by bringing the horizontal synchronizing signal of a video signal to 1/M frequency division by a 1/M frequency divider 6 for the purpose of transmitting the reference frequency of a video signal is used. In this state, the violation is given to the CMI code rule of a CMI encoding part 3 by a code rule violating means 7, and executed by detecting a violation code by a violation code detecting means 8 from a CMI code decoding means 7. Subsequently, based on the detected code as a reference, the sampling clock used by itself is generated by a decoding means 4. In such a manner, in order to transmit the reference frequency of the video signal, it is sufficient that the 1/M frequency divider 6, the code rule violating means 7 and the violation code detecting means 8 are provided.


Inventors:
SAKATA TAKASHI
HANABATAKE TOSHIO
WADA NOBUYUKI
KAWAKADO KOSUKE
SAITO FUMIHIKO
Application Number:
JP9581889A
Publication Date:
November 08, 1990
Filing Date:
April 14, 1989
Export Citation:
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Assignee:
FUJITSU LTD
International Classes:
H04N19/00; H04L7/00; H04L7/10; H04L25/49; H04N19/42; H04N19/423; H04N19/70; H04N19/85; H04N19/91; (IPC1-7): H04L7/00; H04L7/10; H04L25/49; H04N7/13
Attorney, Agent or Firm:
Sadaichi Igita