JPS54121002A - Receiving frequency display circuit for radio receiver - Google Patents
Receiving frequency display circuit for radio receiverInfo
- Publication number
- JPS54121002A JPS54121002A JP2969378A JP2969378A JPS54121002A JP S54121002 A JPS54121002 A JP S54121002A JP 2969378 A JP2969378 A JP 2969378A JP 2969378 A JP2969378 A JP 2969378A JP S54121002 A JPS54121002 A JP S54121002A
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- correction
- value
- decimal counter
- radio receiver
- 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
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE: To secure the adjustment in the fine range with one piece of the input terminal by giving correction according to the shift of the intermediate frequency value and based on the multi-bit pulse signals.
CONSTITUTION: The range of the correctable frequency is divided into half, and the halved number 16 is subtracted when the intermediate frequency is preset to decimal counter 1a, 1b and so on. Accordingly, the value which is first preset to the decimal counter is the minimum value, and thus the correction is given according to the shift of the intermediate frequency. When the intermediate frequency is lower than the correct value, the correction number to be added to the decimal counter is larger than 17; while the intermediate frequency is higher than the correct value, the correction number becomes smaller than 15. And the correction number becomes 16 when the intermediate frequency is correct. Thus, the correction is possible even though the intermediate frequency shifts at a low or high level.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2969378A JPS5823020B2 (en) | 1978-03-13 | 1978-03-13 | Radio receiver reception frequency display circuit |
US06/017,061 US4247950A (en) | 1978-03-13 | 1979-03-02 | Display for frequency received by radio receiver |
FR7906299A FR2420247B1 (en) | 1978-03-13 | 1979-03-12 | DISPLAY DEVICE |
NLAANVRAGE7901954,A NL179174C (en) | 1978-03-13 | 1979-03-12 | HETERODYNE RECEIVER. |
DE2909784A DE2909784C2 (en) | 1978-03-13 | 1979-03-13 | Heterodyne receiver with digital reception frequency display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2969378A JPS5823020B2 (en) | 1978-03-13 | 1978-03-13 | Radio receiver reception frequency display circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54121002A true JPS54121002A (en) | 1979-09-19 |
JPS5823020B2 JPS5823020B2 (en) | 1983-05-12 |
Family
ID=12283178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2969378A Expired JPS5823020B2 (en) | 1978-03-13 | 1978-03-13 | Radio receiver reception frequency display circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5823020B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6818873B2 (en) | 2017-04-03 | 2021-01-20 | 三菱電機株式会社 | Switching element drive unit |
JP6509414B1 (en) | 2018-07-30 | 2019-05-08 | 三菱電機株式会社 | Power converter |
JP6541859B1 (en) | 2018-11-01 | 2019-07-10 | 三菱電機株式会社 | Power converter |
-
1978
- 1978-03-13 JP JP2969378A patent/JPS5823020B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5823020B2 (en) | 1983-05-12 |
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