JPS57119568A - Television receiver - Google Patents

Television receiver

Info

Publication number
JPS57119568A
JPS57119568A JP526681A JP526681A JPS57119568A JP S57119568 A JPS57119568 A JP S57119568A JP 526681 A JP526681 A JP 526681A JP 526681 A JP526681 A JP 526681A JP S57119568 A JPS57119568 A JP S57119568A
Authority
JP
Japan
Prior art keywords
signal
circuit
standard system
standard
fold
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
JP526681A
Other languages
Japanese (ja)
Inventor
Susumu Tsujihara
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP526681A priority Critical patent/JPS57119568A/en
Publication of JPS57119568A publication Critical patent/JPS57119568A/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
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will

Abstract

PURPOSE:To obtain the compatibility between a TV received signal of standard system and that of TV system which employs a horizontal scanning frequency about (n)-fold as high as that of the standard system, by controlling the gain of the signal of the standard system so as to have the same luminance on a display screen, as for both received signals. CONSTITUTION:A signal converting circuit 3 receives the TV signal of a standard system and increases its horizontal scanning frequency (n) times. Then, the circuit 3 stores the TV signal of the standard signal for a one-horizontal-line period, reads the stored signal only once at a speed (n)-fold as fast as that in the storage, and performs signal conversion. On the other hand, the received signal of another TV system which has a horizontal scanning frequency about (n)-fold as high as that of the standard system is inputted from an input terminal 10 to a demodulating circuit 11, and while its demodulation output is sent to a video amplifying circuit 5 through a switch 15, a signal processed by frequency separation 12 is sent to a vertical deflection circuit 7 and a horizontal deflection circuit 9 through switches 13 and 14' respectively. Then, the gain of the signal of the standard system is brought under control 4 so as to have equal luminance on a display screen as for both the system.
JP526681A 1981-01-16 1981-01-16 Television receiver Pending JPS57119568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP526681A JPS57119568A (en) 1981-01-16 1981-01-16 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP526681A JPS57119568A (en) 1981-01-16 1981-01-16 Television receiver

Publications (1)

Publication Number Publication Date
JPS57119568A true JPS57119568A (en) 1982-07-26

Family

ID=11606420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP526681A Pending JPS57119568A (en) 1981-01-16 1981-01-16 Television receiver

Country Status (1)

Country Link
JP (1) JPS57119568A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02312465A (en) * 1989-05-29 1990-12-27 Sony Corp Television receiver
US5264934A (en) * 1991-10-02 1993-11-23 Mitsubishi Denki Kabushiki Kaisha Apparatus for adjusting brightness of a display screen based on a detected horizontal sync frequency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02312465A (en) * 1989-05-29 1990-12-27 Sony Corp Television receiver
US5264934A (en) * 1991-10-02 1993-11-23 Mitsubishi Denki Kabushiki Kaisha Apparatus for adjusting brightness of a display screen based on a detected horizontal sync frequency

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