JPS57207488A - Adaptor for interrupting video reception for television receiver - Google Patents

Adaptor for interrupting video reception for television receiver

Info

Publication number
JPS57207488A
JPS57207488A JP9276881A JP9276881A JPS57207488A JP S57207488 A JPS57207488 A JP S57207488A JP 9276881 A JP9276881 A JP 9276881A JP 9276881 A JP9276881 A JP 9276881A JP S57207488 A JPS57207488 A JP S57207488A
Authority
JP
Japan
Prior art keywords
signal
circuit
camera
interrupting
reception channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9276881A
Other languages
Japanese (ja)
Inventor
Toshio Abiko
Keiichi Mizuguchi
Yoshihiro Tanigawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9276881A priority Critical patent/JPS57207488A/en
Publication of JPS57207488A publication Critical patent/JPS57207488A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information

Abstract

PURPOSE:To display an interrupted camera output, by detecting a reception channel in operation, generating a high frequency signal equal to a channel carrier frequency, amplitude-modulating with a video signal of a TV camera and inputing the signal to an antenna terminal by switching. CONSTITUTION:A local oscillation signal leaked to an antenna terminal 1 of a TV in operation is received at a reception channel detecting circuit 2, and a high frequency signal in a frequency equal to a carrier frequency of the detected reception channel is generated at a carrier wave generating circuit 3. The signal from the circuit 3 is amplitude-modulated 4 with an interrupting video signal outputted from a TV camera provided a front gate. When a push button switch SW is depressed, a switching contact (r) of a switching circuit 6 for a prescribed time set with a timer T is changed over to the (b), an interrupting TV signal from the circuit 4 is inputted to a terminal 1 and the picture of the camera 5 is displayed. After a prescribed time is over, the contact (r) is changed over to the (a) and the TV broadcast received on an antenna 7 is again displayed.
JP9276881A 1981-06-15 1981-06-15 Adaptor for interrupting video reception for television receiver Pending JPS57207488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9276881A JPS57207488A (en) 1981-06-15 1981-06-15 Adaptor for interrupting video reception for television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9276881A JPS57207488A (en) 1981-06-15 1981-06-15 Adaptor for interrupting video reception for television receiver

Publications (1)

Publication Number Publication Date
JPS57207488A true JPS57207488A (en) 1982-12-20

Family

ID=14063596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9276881A Pending JPS57207488A (en) 1981-06-15 1981-06-15 Adaptor for interrupting video reception for television receiver

Country Status (1)

Country Link
JP (1) JPS57207488A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62207076A (en) * 1986-03-07 1987-09-11 Rhythm Watch Co Ltd Television monitor device
JPS62231572A (en) * 1986-03-31 1987-10-12 Rhythm Watch Co Ltd Television monitor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62207076A (en) * 1986-03-07 1987-09-11 Rhythm Watch Co Ltd Television monitor device
JPS62231572A (en) * 1986-03-31 1987-10-12 Rhythm Watch Co Ltd Television monitor device

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