JPS5583385A - Automatic decision system for color signal - Google Patents

Automatic decision system for color signal

Info

Publication number
JPS5583385A
JPS5583385A JP15631078A JP15631078A JPS5583385A JP S5583385 A JPS5583385 A JP S5583385A JP 15631078 A JP15631078 A JP 15631078A JP 15631078 A JP15631078 A JP 15631078A JP S5583385 A JPS5583385 A JP S5583385A
Authority
JP
Japan
Prior art keywords
ntsc
pal
circuit
detection circuit
generator
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
JP15631078A
Other languages
Japanese (ja)
Inventor
Hiroo Takemura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15631078A priority Critical patent/JPS5583385A/en
Publication of JPS5583385A publication Critical patent/JPS5583385A/en
Pending legal-status Critical Current

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  • Color Television Systems (AREA)

Abstract

PURPOSE: To make it possible to record and reproduce accurately a desired signal by making an automatic discrimination between signals on NTSC and PAL systems.
CONSTITUTION: Part of a video signal is applied to sub-carrier generator made of a burst clock generator, etc., whose output is inputted to BPF12 as a 1st detection circuit and detection circuit 13. Then, the output of generator 11 is supplied to BPF14 as a 2nd detection circuit and detection circuit 15 and outputs of those circuits 13 and 15 are inputted to change-over circuit 16 supplied with the video signal; and a NTSC signal is outputted from 1st output terminal 17 of circuit 16 and a PAL signal is outputted to 2nd output terminal 18. From the video signal applied to generator 11, a continuous wave of 3.58MHz as a NTSC sub-carrier or of 4.43MHz as a PAL sub-carrier is obtained; BPF 12 provides a passing band of 3.58MHz, and BPF14 provides that of 4.43NHz. Consequently, NTSC and PAL outputs are obtained by both detection circuits 13 and 14 and outputted from circuit 16.
COPYRIGHT: (C)1980,JPO&Japio
JP15631078A 1978-12-20 1978-12-20 Automatic decision system for color signal Pending JPS5583385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15631078A JPS5583385A (en) 1978-12-20 1978-12-20 Automatic decision system for color signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15631078A JPS5583385A (en) 1978-12-20 1978-12-20 Automatic decision system for color signal

Publications (1)

Publication Number Publication Date
JPS5583385A true JPS5583385A (en) 1980-06-23

Family

ID=15624995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15631078A Pending JPS5583385A (en) 1978-12-20 1978-12-20 Automatic decision system for color signal

Country Status (1)

Country Link
JP (1) JPS5583385A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914470U (en) * 1982-07-19 1984-01-28 パイオニア株式会社 Signal format discrimination circuit in color recording information reproducing device
JPS6425684A (en) * 1987-07-22 1989-01-27 Olympus Optical Co Device for recording signal
JPH03123391U (en) * 1990-03-28 1991-12-16
JPH0573921A (en) * 1991-09-17 1993-03-26 Matsushita Electric Ind Co Ltd Image recording / reproducing apparatus and recording / reproducing control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914470U (en) * 1982-07-19 1984-01-28 パイオニア株式会社 Signal format discrimination circuit in color recording information reproducing device
JPS6425684A (en) * 1987-07-22 1989-01-27 Olympus Optical Co Device for recording signal
JPH03123391U (en) * 1990-03-28 1991-12-16
JPH0573921A (en) * 1991-09-17 1993-03-26 Matsushita Electric Ind Co Ltd Image recording / reproducing apparatus and recording / reproducing control method

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