JPS54105922A - Television picture receiving system - Google Patents

Television picture receiving system

Info

Publication number
JPS54105922A
JPS54105922A JP1241478A JP1241478A JPS54105922A JP S54105922 A JPS54105922 A JP S54105922A JP 1241478 A JP1241478 A JP 1241478A JP 1241478 A JP1241478 A JP 1241478A JP S54105922 A JPS54105922 A JP S54105922A
Authority
JP
Japan
Prior art keywords
circuit
output
supplied
oscillator
ifamp3
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
JP1241478A
Other languages
Japanese (ja)
Inventor
Makoto Furuhata
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 JP1241478A priority Critical patent/JPS54105922A/en
Publication of JPS54105922A publication Critical patent/JPS54105922A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)

Abstract

PURPOSE: To improve the linearity of the video signal component by securing a circuit constitution which is suited to form a semiconductor monolithic integrated circuit for the tuning circuit of the TV picture receiver and thus realizing an automatic fine adjustment and random channel selection.
CONSTITUTION: The voltage control oscillator circuit 6 and 6' which form a local oscillator circuit is provided along with high-frequency amplifier circuit 1 and mixer circuit 2. Then the control signal of the PLL circuit is supplied to circuit 6 and 6'. The PLL circuit comprises program devider 9 which is controlled based on the channel information of the digital value, 1st phase detector circuit 10 which supplies the input of divider 9 and the signal of reference signal oscillator 13 via divider 12, and 2nd phase detector circuit 11 which supplies the output of IFAMP3 and oscillator 13 with the output of circuit 10 used as the input. Then the output of FRAMP1 and circuit 6 and 6' is supplied to circuit 2 via frequency multiplying circuit 5 and 5'; the output of IFAMP3 and phase control circuit 15 is supplied to video detector circuit 4; and the output of circuit 4 is supplied to jungle circuit 16.
COPYRIGHT: (C)1979,JPO&Japio
JP1241478A 1978-02-08 1978-02-08 Television picture receiving system Pending JPS54105922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1241478A JPS54105922A (en) 1978-02-08 1978-02-08 Television picture receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1241478A JPS54105922A (en) 1978-02-08 1978-02-08 Television picture receiving system

Publications (1)

Publication Number Publication Date
JPS54105922A true JPS54105922A (en) 1979-08-20

Family

ID=11804595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1241478A Pending JPS54105922A (en) 1978-02-08 1978-02-08 Television picture receiving system

Country Status (1)

Country Link
JP (1) JPS54105922A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119468A (en) * 1974-08-09 1976-02-16 Hitachi Ltd DOKIKENPA SOCHI
JPS52105714A (en) * 1976-02-27 1977-09-05 Rca Corp Twoomode frequency synthesizer for television tuner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119468A (en) * 1974-08-09 1976-02-16 Hitachi Ltd DOKIKENPA SOCHI
JPS52105714A (en) * 1976-02-27 1977-09-05 Rca Corp Twoomode frequency synthesizer for television tuner

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