JPS57184337A - Frequency discriminator - Google Patents
Frequency discriminatorInfo
- Publication number
- JPS57184337A JPS57184337A JP56069617A JP6961781A JPS57184337A JP S57184337 A JPS57184337 A JP S57184337A JP 56069617 A JP56069617 A JP 56069617A JP 6961781 A JP6961781 A JP 6961781A JP S57184337 A JPS57184337 A JP S57184337A
- Authority
- JP
- Japan
- Prior art keywords
- division ratio
- phase
- divider
- signal
- comparator
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To prevent the malfunction in the light electric field time, by giving variable control to the division ratio of a devider that devides an AM input signal based on the output of another divider and the output given from a phase compartor and actuating the divider at a proper level. CONSTITUTION:A division ratio switching circuit 10 is latched as it is when a signal of the same phase is supplied to a phase comparator 7. When the signal having a different phase like an adverse phase, etc. is supplied to the comparator 7, the division ratio of a divider 300 is switched to N1 or N2 by the output frequency of a low-pass filter 6 and with the repetitive frequency of an N2-fold division ratio of the divider 300. Then the repetitive switching to the division ratio N1 or N2 is kept until the signal within the pass band of the filter 6 is obtained and the comparator detects the same phase.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56069617A JPS57184337A (en) | 1981-05-08 | 1981-05-08 | Frequency discriminator |
DE3131892A DE3131892C2 (en) | 1980-08-12 | 1981-08-12 | Frequency separator |
US06/292,273 US4438405A (en) | 1980-08-12 | 1981-08-12 | Frequency discriminating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56069617A JPS57184337A (en) | 1981-05-08 | 1981-05-08 | Frequency discriminator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57184337A true JPS57184337A (en) | 1982-11-13 |
JPS6232644B2 JPS6232644B2 (en) | 1987-07-16 |
Family
ID=13407997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56069617A Granted JPS57184337A (en) | 1980-08-12 | 1981-05-08 | Frequency discriminator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57184337A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8167437B2 (en) | 2004-05-13 | 2012-05-01 | Thomson Licensing | Multi-positional smoothing mirror for video projection optics |
-
1981
- 1981-05-08 JP JP56069617A patent/JPS57184337A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8167437B2 (en) | 2004-05-13 | 2012-05-01 | Thomson Licensing | Multi-positional smoothing mirror for video projection optics |
Also Published As
Publication number | Publication date |
---|---|
JPS6232644B2 (en) | 1987-07-16 |
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