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Patent Searching and Data


Title:
VIDEO TAPE RECORDER
Document Type and Number:
Japanese Patent JPS5998306
Kind Code:
A
Abstract:

PURPOSE: To know the number of times of screening of a video tape by recording the number of times of reproduction in the head part of a video tape, and thereafter, reproducing a program signal.

CONSTITUTION: A video signal from an input terminal 2 is supplied to a data signal gate circuit 3 and also is supplied to a synchronization separating circuit 4, a vertical synchronizing signal obtained in this synchronization separating circuit 4 is supplied to a data gate pulse signal generating circuit 5, and a data gate pulse signal synchronizing with the vertical synchronizing signal is obtained. The data gate pulse signal obtained in the output side of this generating circuit 5 is supplied to the data signal gate circuit 3 as a gate signal, and also a horizontal synchronizing signal obtained in the synchronization separating circuit 4 is supplied to a data clock signal oscillating circuit 6 as a synchronizing signal, so that this oscillating circuit 6 oscillates by synchronizing with the horizontal synchronizing signal. An output signal of the data signal gate circuit 3 is supplied to, for instance, a 16 bit shift register 7 in accordance with a data clock signal from the data clock signal oscillating circuit 6.


Inventors:
OOSAWA AKIHISA
Application Number:
JP20834582A
Publication Date:
June 06, 1984
Filing Date:
November 26, 1982
Export Citation:
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Assignee:
SONY CORP
International Classes:
G11B23/36; G11B5/00; G11B20/00; G11B31/00; H04N5/74; H04N5/91; H04N5/913; H04N9/31; G11B23/28; (IPC1-7): G11B5/02; G11B23/36
Domestic Patent References:
JPS4913902U1974-02-05
JPS5774867A1982-05-11
Attorney, Agent or Firm:
Sada Ito (1 person outside)



 
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