JPS5510214A - Channel counter circuit - Google Patents

Channel counter circuit

Info

Publication number
JPS5510214A
JPS5510214A JP8198278A JP8198278A JPS5510214A JP S5510214 A JPS5510214 A JP S5510214A JP 8198278 A JP8198278 A JP 8198278A JP 8198278 A JP8198278 A JP 8198278A JP S5510214 A JPS5510214 A JP S5510214A
Authority
JP
Japan
Prior art keywords
frequency interval
saw
saw element
counter
output
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.)
Granted
Application number
JP8198278A
Other languages
Japanese (ja)
Other versions
JPS614214B2 (en
Inventor
Toshinori Murata
Shigeo Matsuura
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 JP8198278A priority Critical patent/JPS5510214A/en
Priority to GB7915165A priority patent/GB2024548B/en
Priority to US06/035,101 priority patent/US4270215A/en
Priority to DE19792918529 priority patent/DE2918529A1/en
Publication of JPS5510214A publication Critical patent/JPS5510214A/en
Publication of JPS614214B2 publication Critical patent/JPS614214B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to apply even signals of a band with an unstable frequency interval, by removing a fixed number of following pulses from the point in time when the number of pulses obtained by a SAW (elastic surface wave) element reaches a fixed value.
CONSTITUTION: Once the local oscillation signal of electronic tuner 1 is swept, a pulse is generated, at every frequency of 2MHz of the local oscillation signal, by SAW element 2,detecting amplifier circuit 3 and waveform shaping circuit 4. When a frequency interval between channels is 6MHz, the output of SAW element 2 is divided by three and counted by counter 7, whose output data becomes a channel number. In addition, once the frequency interval becomes 10MHz, 10-detection circuit 16 operates to remove the unneeded component of the output of SAW element 2 and when the number reaches a fixed value, 12-detection circuit 17 returns its original operation, so that the data of counter 7 will be prevented from differring with the channel number.
COPYRIGHT: (C)1980,JPO&Japio
JP8198278A 1978-05-10 1978-07-07 Channel counter circuit Granted JPS5510214A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8198278A JPS5510214A (en) 1978-07-07 1978-07-07 Channel counter circuit
GB7915165A GB2024548B (en) 1978-05-10 1979-05-01 Preset channel selection apparatus
US06/035,101 US4270215A (en) 1978-05-10 1979-05-01 Channel indicator
DE19792918529 DE2918529A1 (en) 1978-05-10 1979-05-08 PRESET CHANNEL SELECTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8198278A JPS5510214A (en) 1978-07-07 1978-07-07 Channel counter circuit

Publications (2)

Publication Number Publication Date
JPS5510214A true JPS5510214A (en) 1980-01-24
JPS614214B2 JPS614214B2 (en) 1986-02-07

Family

ID=13761680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8198278A Granted JPS5510214A (en) 1978-05-10 1978-07-07 Channel counter circuit

Country Status (1)

Country Link
JP (1) JPS5510214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151745U (en) * 1987-03-25 1988-10-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151745U (en) * 1987-03-25 1988-10-05

Also Published As

Publication number Publication date
JPS614214B2 (en) 1986-02-07

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