JPS5730470A - Automatic switching device of multiple-system color television receiver - Google Patents

Automatic switching device of multiple-system color television receiver

Info

Publication number
JPS5730470A
JPS5730470A JP10358580A JP10358580A JPS5730470A JP S5730470 A JPS5730470 A JP S5730470A JP 10358580 A JP10358580 A JP 10358580A JP 10358580 A JP10358580 A JP 10358580A JP S5730470 A JPS5730470 A JP S5730470A
Authority
JP
Japan
Prior art keywords
circuit
band characteristics
diode
pal
sound
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
JP10358580A
Other languages
Japanese (ja)
Inventor
Satoshi Hatakeyama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10358580A priority Critical patent/JPS5730470A/en
Publication of JPS5730470A publication Critical patent/JPS5730470A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/642—Multi-standard receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Color Television Systems (AREA)

Abstract

PURPOSE:To receive TV signals, differing in system, with simple circuit constitution, by switching input band characteristics of a sound IF signal automatically by a detection signal obtained by detecting the output amplitude variations of a vertical oscillating circuit due to a difference in field frequency. CONSTITUTION:The output of a vertical synchronism discriminating circuit, which inputs the 1st and 2nd vertical synchronizing signals of the B/PAL and M/NTSC systems and outputs the 1st and 2nd voltage levels synchronizing with those synchronizing signals, is applied to the terminal E of a circuit switching sound IF band characteristics. This switching circuit is provided with a sound IF detector 5, capacitors 7-10, a diode 11, an IF transformer 12, etc. For B/PAL reception, a voltage inputted to the terminal E is held at 0 to turn off the diode 11, and the band characteristics of an IF input resonant circuit are set to the reception frequency of the B/PAL system. For M/NTSC system reception, on the other hand, the voltage inputted to terminal E is held at a prescribed level to turn on the diode 11, and then the capacitor 8 is short-circuited to set the band characteristics to the frequency of the M/NTSC system.
JP10358580A 1980-07-30 1980-07-30 Automatic switching device of multiple-system color television receiver Pending JPS5730470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10358580A JPS5730470A (en) 1980-07-30 1980-07-30 Automatic switching device of multiple-system color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10358580A JPS5730470A (en) 1980-07-30 1980-07-30 Automatic switching device of multiple-system color television receiver

Publications (1)

Publication Number Publication Date
JPS5730470A true JPS5730470A (en) 1982-02-18

Family

ID=14357844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10358580A Pending JPS5730470A (en) 1980-07-30 1980-07-30 Automatic switching device of multiple-system color television receiver

Country Status (1)

Country Link
JP (1) JPS5730470A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216687A (en) * 1976-12-10 1983-12-16 イ−ストマン・コダツク・カンパニ− Production of alpha-glycerophosphate- oxidase
JPS604491U (en) * 1983-06-21 1985-01-12 豊国工業株式会社 Flexible container support and unloading device
JPS6340077U (en) * 1986-08-30 1988-03-15
JPH01177624U (en) * 1988-05-31 1989-12-19

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216687A (en) * 1976-12-10 1983-12-16 イ−ストマン・コダツク・カンパニ− Production of alpha-glycerophosphate- oxidase
JPS58216686A (en) * 1976-12-10 1983-12-16 イ−ストマン・コダツク・カンパニ− Production of alpha-glycerophosphate- oxidase
JPS62676B2 (en) * 1976-12-10 1987-01-08 Eastman Kodak Co
JPS62675B2 (en) * 1976-12-10 1987-01-08 Eastman Kodak Co
JPS604491U (en) * 1983-06-21 1985-01-12 豊国工業株式会社 Flexible container support and unloading device
JPS6340077U (en) * 1986-08-30 1988-03-15
JPH01177624U (en) * 1988-05-31 1989-12-19

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