ES455336A1 - Mejoras introducidas en un sistema para la regeneracion de informacion vinaria codificada. - Google Patents
Mejoras introducidas en un sistema para la regeneracion de informacion vinaria codificada.Info
- Publication number
- ES455336A1 ES455336A1 ES455336A ES455336A ES455336A1 ES 455336 A1 ES455336 A1 ES 455336A1 ES 455336 A ES455336 A ES 455336A ES 455336 A ES455336 A ES 455336A ES 455336 A1 ES455336 A1 ES 455336A1
- Authority
- ES
- Spain
- Prior art keywords
- data stream
- recovery system
- data recovery
- frequency deviations
- input
- 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.)
- Expired
Links
- 238000011084 recovery Methods 0.000 title abstract 5
- 230000007704 transition Effects 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/0807—Details of the phase-locked loop concerning mainly a recovery circuit for the reference signal
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Dc Digital Transmission (AREA)
Abstract
Mejoras introducidas en un sistema para la regeneración de información binaria codificada que está representada en un flujo de datos en unas posiciones de tiempo que recurren a una frecuencia normalmente predeterminada, pero sometida a variaciones incontrolables, incluyendo el sistema unos medios para generar señales que tienen porciones altas y bajas alternativamente para ser utilizadas como ventanas de regeneración, una lógica de regeneración alimentada con dichas ventanas, y un bucle de oscilador sincronizado en fase controlado por un comparador de fase y que determina los momentos de ocurrencia de las ventanas, aplicándose al comparador de fase, dos señales de comparación una que está constituida por la señal de realimentación del bucle, mientras que la otra es una señal derivada del flujo de datos, estando dichas mejoras caracterizadas porque incluyen: un dispositivo para suministrar a la lógica de regeneración una señal también derivada del flujo de datos y que tiene características variables en función del tiempo representativas de la información que se produce sustancialmente al mismo tiempo que unas características variables en función el tiempo correspondientes, de dicha señal derivada a partir del flujo de datos que se suministra al comparador de fase, y ello de manera sustancialmente independiente de dichas variaciones de frecuencia.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/653,410 US4017803A (en) | 1976-01-29 | 1976-01-29 | Data recovery system resistant to frequency deviations |
Publications (1)
Publication Number | Publication Date |
---|---|
ES455336A1 true ES455336A1 (es) | 1978-01-01 |
Family
ID=24620771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES455336A Expired ES455336A1 (es) | 1976-01-29 | 1977-01-25 | Mejoras introducidas en un sistema para la regeneracion de informacion vinaria codificada. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4017803A (es) |
JP (1) | JPS5294112A (es) |
CA (1) | CA1051528A (es) |
CH (1) | CH620068A5 (es) |
DE (1) | DE2703395C3 (es) |
ES (1) | ES455336A1 (es) |
FR (1) | FR2340000A1 (es) |
GB (1) | GB1565245A (es) |
IT (1) | IT1075058B (es) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2748075C3 (de) * | 1977-10-26 | 1980-08-07 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Phasenregelkreis |
DE2823343B1 (de) * | 1978-05-29 | 1979-08-16 | Siemens Ag | Verfahren und Anordnung zur Taktsignalrueckgewinnung bei digitaler Signaluebertragung |
US4222009A (en) * | 1978-11-02 | 1980-09-09 | Sperry Corporation | Phase lock loop preconditioning circuit |
US4357707A (en) * | 1979-04-11 | 1982-11-02 | Pertec Computer Corporation | Digital phase lock loop for flexible disk data recovery system |
BR8004455A (pt) * | 1979-07-19 | 1981-01-27 | Exxon Research Engineering Co | Circuito separador de dados e circuito para emprego na recuperacao de um sinal de relogio de um sinal codificado de dados dos |
US4339823A (en) * | 1980-08-15 | 1982-07-13 | Motorola, Inc. | Phase corrected clock signal recovery circuit |
US4400667A (en) * | 1981-01-12 | 1983-08-23 | Sangamo Weston, Inc. | Phase tolerant bit synchronizer for digital signals |
US4371974A (en) * | 1981-02-25 | 1983-02-01 | Rockwell International Corporation | NRZ Data phase detector |
US4456890A (en) * | 1982-04-05 | 1984-06-26 | Computer Peripherals Inc. | Data tracking clock recovery system using digitally controlled oscillator |
JPS58182323A (ja) * | 1982-04-20 | 1983-10-25 | Nec Corp | 位相同期回路 |
BE895439R (nl) * | 1982-12-22 | 1983-06-22 | Int Standard Electric Corp | Impulscorrectieketen en schakelingen die er gebruik van maken |
US4556866A (en) * | 1983-03-16 | 1985-12-03 | Honeywell Inc. | Power line carrier FSK data system |
US4547738A (en) * | 1983-06-10 | 1985-10-15 | American Standard Inc. | Phase shift demodulator |
NL8401310A (nl) * | 1984-04-24 | 1985-11-18 | Philips Nv | Inrichting voor het opwekken van een kloksignaal. |
US4682343A (en) * | 1984-09-11 | 1987-07-21 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Processing circuit with asymmetry corrector and convolutional encoder for digital data |
US4633488A (en) * | 1984-11-13 | 1986-12-30 | Digital Equipment Corporation | Phase-locked loop for MFM data recording |
US4847876A (en) * | 1986-12-31 | 1989-07-11 | Raytheon Company | Timing recovery scheme for burst communication systems |
US4879730A (en) * | 1988-05-31 | 1989-11-07 | Siemens Transmission Systems, Inc. | Jitter tolerant circuit for dual rail data |
JP2512786B2 (ja) * | 1988-07-18 | 1996-07-03 | 富士通株式会社 | 位相整合回路 |
US4975930A (en) * | 1988-11-02 | 1990-12-04 | Digital Equipment Corporation | Digital phase locked loop |
US5579348A (en) * | 1994-02-02 | 1996-11-26 | Gi Corporation | Method and apparatus for improving the apparent accuracy of a data receiver clock circuit |
US5892797A (en) * | 1996-07-17 | 1999-04-06 | Jay Deng | System and method for recovering data encoded using manchester code and other bi-phase level codes |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3825844A (en) * | 1972-10-18 | 1974-07-23 | Peripherals General Inc | System for recovering phase shifted data pulses |
-
1976
- 1976-01-29 US US05/653,410 patent/US4017803A/en not_active Expired - Lifetime
- 1976-12-29 CA CA268,822A patent/CA1051528A/en not_active Expired
-
1977
- 1977-01-18 IT IT19420/77A patent/IT1075058B/it active
- 1977-01-24 FR FR7701865A patent/FR2340000A1/fr active Granted
- 1977-01-25 ES ES455336A patent/ES455336A1/es not_active Expired
- 1977-01-26 CH CH92777A patent/CH620068A5/de not_active IP Right Cessation
- 1977-01-27 DE DE2703395A patent/DE2703395C3/de not_active Expired
- 1977-01-28 JP JP794477A patent/JPS5294112A/ja active Granted
- 1977-01-28 GB GB3504/77A patent/GB1565245A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6227470B2 (es) | 1987-06-15 |
JPS5294112A (en) | 1977-08-08 |
FR2340000A1 (fr) | 1977-08-26 |
IT1075058B (it) | 1985-04-22 |
FR2340000B1 (es) | 1982-12-31 |
US4017803A (en) | 1977-04-12 |
DE2703395B2 (de) | 1978-03-23 |
GB1565245A (en) | 1980-04-16 |
DE2703395C3 (de) | 1978-11-23 |
DE2703395A1 (de) | 1977-08-04 |
CA1051528A (en) | 1979-03-27 |
CH620068A5 (es) | 1980-10-31 |
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