JPS57190415A - Timing extracting circuit - Google Patents
Timing extracting circuitInfo
- Publication number
- JPS57190415A JPS57190415A JP56074301A JP7430181A JPS57190415A JP S57190415 A JPS57190415 A JP S57190415A JP 56074301 A JP56074301 A JP 56074301A JP 7430181 A JP7430181 A JP 7430181A JP S57190415 A JPS57190415 A JP S57190415A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- polarity
- differential
- input signal
- 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
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
- H04L7/0062—Detection of the synchronisation error by features other than the received signal transition detection of error based on data decision error, e.g. Mueller type detection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
- H03K9/02—Demodulating pulses which have been modulated with a continuously-variable signal of amplitude-modulated pulses
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
PURPOSE:To simplify circuit configuration and to stabilize the operation of the titled circuit even if a received waveform is deteriorated. CONSTITUTION:A PAM signal y(t) received from an input terminal 1 is inputted to a delay differential circuit 2 and a polarity deciding circuit 3. The delay differential signal y(t) and an input signal y(t-T) received just 1 clock T before the input signal y(t) and outputs the differential circuit 2 finds the difference between the input signal and the polarity deciding ciruit 3 decides the polarity of the difference between the input signal y(t) and a prescribed threshold level by a timing signal outputted from a voltage controlling oscillator 6. A gate circuit 4 sends the differential signal outputted from the delay differential circuit 2 to a loop filter 5 as it is when the output of the polarity deciding circuit 3 is positive, and sends the differential signal to the loop filter 5 after inverting the polarity of the differential signal in case of the negative output. The voltage controlling oscillator 6 generates a timing signal whose oscillation frequency is controlled by the control voltage smoothed by the loop filter 5 to give the polarity deciding timing to the polarity deciding circuit 3.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56074301A JPS57190415A (en) | 1981-05-19 | 1981-05-19 | Timing extracting circuit |
| CA000402991A CA1180416A (en) | 1981-05-19 | 1982-05-14 | Timing recovery circuit |
| US06/379,408 US4423518A (en) | 1981-05-19 | 1982-05-18 | Timing recovery circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56074301A JPS57190415A (en) | 1981-05-19 | 1981-05-19 | Timing extracting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57190415A true JPS57190415A (en) | 1982-11-24 |
| JPS643372B2 JPS643372B2 (en) | 1989-01-20 |
Family
ID=13543165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56074301A Granted JPS57190415A (en) | 1981-05-19 | 1981-05-19 | Timing extracting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57190415A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6693180B2 (en) | 2016-03-09 | 2020-05-13 | ヤマハ株式会社 | Recording data analysis method and recording data analysis device |
-
1981
- 1981-05-19 JP JP56074301A patent/JPS57190415A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643372B2 (en) | 1989-01-20 |
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