JPS5593347A - Clock reproduction unit - Google Patents
Clock reproduction unitInfo
- Publication number
- JPS5593347A JPS5593347A JP142779A JP142779A JPS5593347A JP S5593347 A JPS5593347 A JP S5593347A JP 142779 A JP142779 A JP 142779A JP 142779 A JP142779 A JP 142779A JP S5593347 A JPS5593347 A JP S5593347A
- Authority
- JP
- Japan
- Prior art keywords
- clock
- mixer
- phase detector
- omegat
- inputted
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
- H04L7/0274—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit with Costas loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
PURPOSE:To supply stable clock to the signal processing section, by synchronizing the clock signal picked up from the reception signal with the phase of stable clock provided in the communication system, in the digital communication such as time sharing multiplex connection. CONSTITUTION:The clock signal Cos(omegat+theta) picked up from the reception signal inputted to the terminal 1 is inputted to the first phase detector 5a and the second phase detector 5b. The stable reference clock Cos omegat inputted from the terminal 4 is given to the first phase detector 5a and also to the first mixer 6a. Further, the reference clock is given to the second phase detector 5b and the second mixer 6b via the 90 deg. phase shift circuit 7. The output (-Costheta.Cosomegat) of the first mixer 6a and the output (Sintheta.Sinomegat) of the second mixer 6b are synthesized at the synthesis circuit 9 to obtain Cos(omegat+theta) in completely synchronizing with the clock signal picked up at the reproduction circuit 2 at the output terminal 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54001427A JPS5948583B2 (en) | 1979-01-08 | 1979-01-08 | clock regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54001427A JPS5948583B2 (en) | 1979-01-08 | 1979-01-08 | clock regenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5593347A true JPS5593347A (en) | 1980-07-15 |
| JPS5948583B2 JPS5948583B2 (en) | 1984-11-27 |
Family
ID=11501151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54001427A Expired JPS5948583B2 (en) | 1979-01-08 | 1979-01-08 | clock regenerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948583B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4638358A (en) * | 1982-07-19 | 1987-01-20 | Matsushita Electric Industrial Co., Ltd. | Sampling clock reproducing circuit |
| US6412745B1 (en) | 1997-03-06 | 2002-07-02 | Yokoyama Co., Ltd. | Fastener using metal and wooden board |
-
1979
- 1979-01-08 JP JP54001427A patent/JPS5948583B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4638358A (en) * | 1982-07-19 | 1987-01-20 | Matsushita Electric Industrial Co., Ltd. | Sampling clock reproducing circuit |
| US6412745B1 (en) | 1997-03-06 | 2002-07-02 | Yokoyama Co., Ltd. | Fastener using metal and wooden board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5948583B2 (en) | 1984-11-27 |
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