JPS5593350A - Clock reproduction unit - Google Patents
Clock reproduction unitInfo
- Publication number
- JPS5593350A JPS5593350A JP143079A JP143079A JPS5593350A JP S5593350 A JPS5593350 A JP S5593350A JP 143079 A JP143079 A JP 143079A JP 143079 A JP143079 A JP 143079A JP S5593350 A JPS5593350 A JP S5593350A
- Authority
- JP
- Japan
- Prior art keywords
- clock
- reference clock
- phase
- picked
- 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.)
- Pending
Links
- 230000010363 phase shift Effects 0.000 abstract 1
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
- H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
- H04L7/0337—Selecting between two or more discretely delayed clocks or selecting between two or more discretely delayed received code signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
PURPOSE:To obtain stable clock similar to the picked up clock in phase based on the detected output, by detecting the phase difference between the clock picked up from the reception signal and the reference clock, in the digital communication such as time sharing multiplex connection. CONSTITUTION:The clock is picked up at the clock reproduction circuit 2 from the input from the reception signal input terminal 1. The picked up clock and the reference clock from the terminal 4 are inputted to the phase detector 5. The level of the phase detected output is judged at the level discriminator 8 and inputted to the switch 9. The reference clock is inputted to the switch 9 and the reference clock in 180 deg. phase shift is inputted to the switch circuit 9. Further, if the output of the level discriminator 8 is more than specified level, the reference clock is outputted to the terminal 11 as it is and if less than the specified level, the reference clock phase shifted by 180 deg. is outputted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP143079A JPS5593350A (en) | 1979-01-08 | 1979-01-08 | Clock reproduction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP143079A JPS5593350A (en) | 1979-01-08 | 1979-01-08 | Clock reproduction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5593350A true JPS5593350A (en) | 1980-07-15 |
Family
ID=11501233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP143079A Pending JPS5593350A (en) | 1979-01-08 | 1979-01-08 | Clock reproduction unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5593350A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5761358A (en) * | 1980-07-17 | 1982-04-13 | Rockwell International Corp | Digital signal synchronizing system |
| JPS58121851A (en) * | 1982-01-14 | 1983-07-20 | Canon Inc | Synchronizing circuit |
| JPS6128251A (en) * | 1984-07-19 | 1986-02-07 | Nitsuko Ltd | Clock synchronizing system |
| JPS61120538A (en) * | 1984-11-15 | 1986-06-07 | Nec Corp | Multi-direction multiplex communication equipment |
| JPS6265535A (en) * | 1985-09-17 | 1987-03-24 | Nippon Telegr & Teleph Corp <Ntt> | Clock asynchronizing data detection system |
| JPS6265536A (en) * | 1985-09-17 | 1987-03-24 | Nippon Telegr & Teleph Corp <Ntt> | Clock asynchronizing data detection system |
| JPH02211735A (en) * | 1989-02-10 | 1990-08-23 | Matsushita Electric Ind Co Ltd | Bit synchronizing device |
-
1979
- 1979-01-08 JP JP143079A patent/JPS5593350A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5761358A (en) * | 1980-07-17 | 1982-04-13 | Rockwell International Corp | Digital signal synchronizing system |
| JPS6255746B2 (en) * | 1980-07-17 | 1987-11-20 | Rockwell International Corp | |
| JPS58121851A (en) * | 1982-01-14 | 1983-07-20 | Canon Inc | Synchronizing circuit |
| JPS6128251A (en) * | 1984-07-19 | 1986-02-07 | Nitsuko Ltd | Clock synchronizing system |
| JPH0584691B2 (en) * | 1984-07-19 | 1993-12-02 | Nitsuko Ltd | |
| JPS61120538A (en) * | 1984-11-15 | 1986-06-07 | Nec Corp | Multi-direction multiplex communication equipment |
| JPS6265535A (en) * | 1985-09-17 | 1987-03-24 | Nippon Telegr & Teleph Corp <Ntt> | Clock asynchronizing data detection system |
| JPS6265536A (en) * | 1985-09-17 | 1987-03-24 | Nippon Telegr & Teleph Corp <Ntt> | Clock asynchronizing data detection system |
| JPH02211735A (en) * | 1989-02-10 | 1990-08-23 | Matsushita Electric Ind Co Ltd | Bit synchronizing device |
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