JPS5510214A - Channel counter circuit - Google Patents
Channel counter circuitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63151745U (en) * | 1987-03-25 | 1988-10-05 |
-
1978
- 1978-07-07 JP JP8198278A patent/JPS5510214A/en active Granted
Cited By (1)
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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