JPS5613824A - Channel selection tuning circuit - Google Patents

Channel selection tuning circuit

Info

Publication number
JPS5613824A
JPS5613824A JP8960779A JP8960779A JPS5613824A JP S5613824 A JPS5613824 A JP S5613824A JP 8960779 A JP8960779 A JP 8960779A JP 8960779 A JP8960779 A JP 8960779A JP S5613824 A JPS5613824 A JP S5613824A
Authority
JP
Japan
Prior art keywords
counter
channel
draw
channel selection
tuning circuit
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
JP8960779A
Other languages
Japanese (ja)
Inventor
Hideji Takebe
Hiroshi Kobayashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8960779A priority Critical patent/JPS5613824A/en
Publication of JPS5613824A publication Critical patent/JPS5613824A/en
Pending legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE: To eliminate the ill effect by which the draw-in is impossible to the optimum frequency according to the conditions of the temperature or the like, by providing the down-pulse applying means to the up-down counter.
CONSTITUTION: Down-pulse applying means 18 is provided. Then the signal sent from switch means 11 which generates the signal corresponding to the desired channel is supplied to address generator 12; and the address corresponding to the generated desired channel is sent to memory means 13. The digital tuning information written into the address corresponding to the channel is set to up-down counter 14 from means 13 and by selection of the channel. Thus means 18 functions to apply the down pulses of a necessary number to counter 14 and then to decrease the contents of counter 14. After this, automatic frequency control circuit 16 operates to perform the draw-in to the optimum frequency. Thus the correct tuning is carried out.
COPYRIGHT: (C)1981,JPO&Japio
JP8960779A 1979-07-13 1979-07-13 Channel selection tuning circuit Pending JPS5613824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8960779A JPS5613824A (en) 1979-07-13 1979-07-13 Channel selection tuning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8960779A JPS5613824A (en) 1979-07-13 1979-07-13 Channel selection tuning circuit

Publications (1)

Publication Number Publication Date
JPS5613824A true JPS5613824A (en) 1981-02-10

Family

ID=13975427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8960779A Pending JPS5613824A (en) 1979-07-13 1979-07-13 Channel selection tuning circuit

Country Status (1)

Country Link
JP (1) JPS5613824A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232212A (en) * 1986-04-01 1987-10-12 Kokusai Electric Co Ltd Frequency control circuit for frequency tuning circuit using varactor diode
JPH0579494U (en) * 1992-03-27 1993-10-29 リズム時計工業株式会社 Beat clock

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451307A (en) * 1977-09-29 1979-04-23 Sony Corp Television receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451307A (en) * 1977-09-29 1979-04-23 Sony Corp Television receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232212A (en) * 1986-04-01 1987-10-12 Kokusai Electric Co Ltd Frequency control circuit for frequency tuning circuit using varactor diode
JPH0579494U (en) * 1992-03-27 1993-10-29 リズム時計工業株式会社 Beat clock

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