JPS55166386A - Multi-system television picture receiver - Google Patents

Multi-system television picture receiver

Info

Publication number
JPS55166386A
JPS55166386A JP7422779A JP7422779A JPS55166386A JP S55166386 A JPS55166386 A JP S55166386A JP 7422779 A JP7422779 A JP 7422779A JP 7422779 A JP7422779 A JP 7422779A JP S55166386 A JPS55166386 A JP S55166386A
Authority
JP
Japan
Prior art keywords
switch
diode
broadcasting
intermediate frequency
amplitude
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
JP7422779A
Other languages
Japanese (ja)
Inventor
Tsutomu Kitamura
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 JP7422779A priority Critical patent/JPS55166386A/en
Publication of JPS55166386A publication Critical patent/JPS55166386A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To omit the switch and its connection and thus increase the working efficiency and the producibility each, by adding the diode and then sharing the switch part of the aural intermediate frequency amplifying/detecting circuit. CONSTITUTION:The joint between resistances R1 and R2 is connected to terminal D via diode 60. For switching of aural intermediate frequency amplifying/detecting circuit 4, terminals C and D are earthed via switch S2 and to the American and European system of broadcasting. When the broadcasting of European system is received, switch S2 is turned toward terminal D. Thus the joint of R1 and R2 is earthed via diode 60, and the time constant of the saw-tooth wave generating circuit becomes CR1 with the amplitude reduced. On the other hand, switch S2 is turned toward terminal C for the broadcasting of American system. Thus no conduction is given to diode 60, and the time constant of the saw-tooth wave generating circuit becomes C(R1+R2) with the amplitude increased. In such way, the desired aural intermediate frequency and the vertical amplitude can be obtained through switching of switch S2, thus realizing the simplification of the constitution.
JP7422779A 1979-06-12 1979-06-12 Multi-system television picture receiver Pending JPS55166386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7422779A JPS55166386A (en) 1979-06-12 1979-06-12 Multi-system television picture receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7422779A JPS55166386A (en) 1979-06-12 1979-06-12 Multi-system television picture receiver

Publications (1)

Publication Number Publication Date
JPS55166386A true JPS55166386A (en) 1980-12-25

Family

ID=13541076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7422779A Pending JPS55166386A (en) 1979-06-12 1979-06-12 Multi-system television picture receiver

Country Status (1)

Country Link
JP (1) JPS55166386A (en)

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