GB2032228B - D c free encoding for data transmission - Google Patents

D c free encoding for data transmission

Info

Publication number: GB2032228B
Authority: GB; United Kingdom
Prior art keywords: data transmission; free encoding; encoding; free; transmission
Prior art date: 1978-10-05
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

Application number

GB7933998A

Other versions

GB2032228A (en

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Ampex Corp

Original Assignee

Ampex Corp

Priority date (The priority date 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 date listed.)

1978-10-05

Filing date

1979-10-01

Publication date

1983-03-30

1979-10-01 Application filed by Ampex Corp filed Critical Ampex Corp

1980-04-30 Publication of GB2032228A publication Critical patent/GB2032228A/en

1983-03-30 Application granted granted Critical

1983-03-30 Publication of GB2032228B publication Critical patent/GB2032228B/en

Status Expired legal-status Critical Current

Classifications

- 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
- H04L25/4906—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 binary codes

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Computer Networks & Wireless Communication (AREA)
Dc Digital Transmission (AREA)
Signal Processing For Digital Recording And Reproducing (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Error Detection And Correction (AREA)

GB7933998A 1978-10-05 1979-10-01 D c free encoding for data transmission Expired GB2032228B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US94916178A	1978-10-05	1978-10-05

Publications (2)

Publication Number	Publication Date
GB2032228A GB2032228A (en)	1980-04-30
GB2032228B true GB2032228B (en)	1983-03-30

Family

ID=25488672

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7933998A Expired GB2032228B (en)	1978-10-05	1979-10-01	D c free encoding for data transmission

Country Status (8)

Country	Link
JP (1)	JPS55159659A (en)
BE (1)	BE879124A (en)
CA (1)	CA1140998A (en)
DE (1)	DE2940488C2 (en)
FR (1)	FR2438388A1 (en)
GB (1)	GB2032228B (en)
IT (1)	IT1164050B (en)
NL (1)	NL7907383A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2531289A2 (en) *	1976-03-19	1984-02-03	Ampex	Apparatus and method of encoding without direct current for a data transmission system.
JPS601956A (en) *	1983-06-17	1985-01-08	Sony Corp	Modulating method of digital data
FR2571910B1 (en) *	1984-10-16	1987-01-09	Bull Sa	ENCODING AND DECODING METHOD AND DEVICE FOR SERIAL TRANSMISSION OF BINARY DATA WITH CONTINUOUS COMPONENT REMOVAL
FR2585905B1 (en) *	1985-08-02	1987-09-25	Telediffusion Fse	METHOD FOR BASIC BAND MODULATION OF A DATA SIGNAL, CORRESPONDING MODULATION APPARATUS AND DEMODULATION APPARATUS
JP2006069742A (en)	2004-09-02	2006-03-16	Hamada Printing Press Co Ltd	Inkjet printer
FR2998182B1 (en)	2012-11-16	2015-06-26	Zedel	LOADED LOCKED ROPE SECURITY APPARATUS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3995264A (en) *	1974-11-01	1976-11-30	International Business Machines Corporation	Apparatus for encoding and decoding binary data in a modified zero modulation data code
US4027335A (en) *	1976-03-19	1977-05-31	Ampex Corporation	DC free encoding for data transmission system

1979
- 1979-09-05 CA CA000335059A patent/CA1140998A/en not_active Expired
- 1979-10-01 GB GB7933998A patent/GB2032228B/en not_active Expired
- 1979-10-01 BE BE0/197420A patent/BE879124A/en not_active IP Right Cessation
- 1979-10-03 IT IT50446/79A patent/IT1164050B/en active
- 1979-10-04 NL NL7907383A patent/NL7907383A/en not_active Application Discontinuation
- 1979-10-04 FR FR7924673A patent/FR2438388A1/en active Granted
- 1979-10-05 DE DE2940488A patent/DE2940488C2/en not_active Expired
- 1979-10-05 JP JP12877579A patent/JPS55159659A/en active Pending

Also Published As

Publication number	Publication date
DE2940488A1 (en)	1980-04-24
CA1140998A (en)	1983-02-08
GB2032228A (en)	1980-04-30
DE2940488C2 (en)	1984-08-16
JPS55159659A (en)	1980-12-11
IT7950446A0 (en)	1979-10-03
BE879124A (en)	1980-02-01
IT1164050B (en)	1987-04-08
FR2438388A1 (en)	1980-04-30
FR2438388B1 (en)	1983-04-01
NL7907383A (en)	1980-04-09

Publication	Publication Date	Title
GB2032227B (en)	1983-05-18	D c free encoding for data transmission
GB2014402B (en)	1982-06-23	Data transmission system
GB2012145B (en)	1982-03-10	Data transmission systems
GB1540036A (en)	1979-02-07	Data transmission
JPS5616343A (en)	1981-02-17	Data transmission system
ZA792337B (en)	1980-06-25	Digital data transmission
GB2044045B (en)	1982-12-22	Data transmission system
GB2025189B (en)	1982-09-08	Testing data transmission lines
IE45851L (en)	1978-06-16	Data transmission
JPS5573153A (en)	1980-06-02	Digital information transmission system
GB2049365B (en)	1983-06-15	Data transmission system
JPS55145457A (en)	1980-11-13	Data transmission system
GB2032228B (en)	1983-03-30	D c free encoding for data transmission
GB2063628B (en)	1983-12-07	Data transmission
GB2024571B (en)	1982-10-27	Data transmission systems
GB2052217B (en)	1983-10-05	Data transmission system
JPS55135455A (en)	1980-10-22	Data transmission modulator
GB1550561A (en)	1979-08-15	Data transmission
GB2039115B (en)	1982-08-25	Data coding apparatus
JPS5494802A (en)	1979-07-26	Data transmission system
JPS54133019A (en)	1979-10-16	Data encoder
GB2051524B (en)	1983-06-22	Data transmission system
JPS5569896A (en)	1980-05-26	Data transmission system
GB2016185B (en)	1982-03-31	Data transmitting system
JPS54149409A (en)	1979-11-22	Data transmission device

Legal Events

Date	Code	Title	Description
1986-06-04	PCNP	Patent ceased through non-payment of renewal fee