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Patent Searching and Data


Title:
INFORMATION PROGRAM SEARCHING CIRCUIT DEVICE FOR MAGNETIC RECORDING AND REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JPH02240852
Kind Code:
A
Abstract:

PURPOSE: To simplify the program search and to attain highly accurate retrieval position by recording a prescribed tracking signal on the prescribed track upon normal recording and detecting the tracking signal upon reproduction for the program searching operation.

CONSTITUTION: When a program searching switch 3 is operated in the case of recording a video signal, a pilot signal generating circuit 5 sends a pilot signal with a prescribed frequency for a prescribed time band and the signal is recorded onto a prescribed area of a track of a video tape. In the case of fast forward reproduction, when the program searching switch is operated, a reference pilot signal is sent from the pilot signal generating circuit 5, and ATF circuit 2 selects a pilot signal relating to the reference pilot signal from the reproduced pilot signal and generates a tracking signal and sends it to a sample and hold circuit 7 via an amplifier 6 and a system control microcomputer 4 uses a control signal sent from a ΔFa detection deciding circuit 8 to send a control signal to stop the video tape to the capstan control section.


Inventors:
NISHIYAMA KIYOHARU
Application Number:
JP6287189A
Publication Date:
September 25, 1990
Filing Date:
March 14, 1989
Export Citation:
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Assignee:
RICOH KK
International Classes:
G11B15/087; G11B15/467; (IPC1-7): G11B15/087; G11B15/467
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)