GB1251597A - - Google Patents

Info

Publication number
GB1251597A
GB1251597A GB1251597DA GB1251597A GB 1251597 A GB1251597 A GB 1251597A GB 1251597D A GB1251597D A GB 1251597DA GB 1251597 A GB1251597 A GB 1251597A
Authority
GB
United Kingdom
Prior art keywords
signal
scanner
output
circuit
outputs
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
Application number
Other languages
English (en)
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.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1251597A publication Critical patent/GB1251597A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/4917—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 multilevel codes
    • H04L25/4923—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 multilevel codes using ternary codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/4135—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which a baseband signal showing more than two values or a continuously varying baseband signal is transmitted or recorded

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Facsimile Scanning Arrangements (AREA)
GB1251597D 1968-01-24 1969-01-24 Expired GB1251597A (US07582779-20090901-C00044.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70008168A 1968-01-24 1968-01-24

Publications (1)

Publication Number Publication Date
GB1251597A true GB1251597A (US07582779-20090901-C00044.png) 1971-10-27

Family

ID=24812108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1251597D Expired GB1251597A (US07582779-20090901-C00044.png) 1968-01-24 1969-01-24

Country Status (4)

Country Link
US (1) US3517117A (US07582779-20090901-C00044.png)
DE (1) DE1903629B2 (US07582779-20090901-C00044.png)
FR (1) FR2005209B1 (US07582779-20090901-C00044.png)
GB (1) GB1251597A (US07582779-20090901-C00044.png)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761610A (en) * 1971-02-16 1973-09-25 Graphics Sciences Inc High speed fascimile systems
US4739413A (en) * 1985-06-14 1988-04-19 Luma Telecom, Inc. Video-optimized modulator-demodulator with adjacent modulating amplitudes matched to adjacent pixel gray values
GB2219906A (en) * 1988-06-15 1989-12-20 Sony Corp Image data transmitting systems
US4918718A (en) * 1988-06-28 1990-04-17 Luma Telecom, Inc. Quadrature amplitude modulation with line synchronization pulse for video telephone
US4897854A (en) * 1989-02-24 1990-01-30 General Instrument Corporation Alternate pulse inversion encoding scheme for serial data transmission
JPH02257783A (ja) * 1989-03-30 1990-10-18 Mitsubishi Electric Corp 静止画テレビ電話伝送方式
KR100469710B1 (ko) * 2002-11-25 2005-02-02 삼성전자주식회사 듀오바이너리 광 전송장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233236A (en) * 1961-06-28 1966-02-01 Lear Siegler Inc System for bandwidth compression of binary signals
NL292264A (US07582779-20090901-C00044.png) * 1962-05-07
NL294752A (US07582779-20090901-C00044.png) * 1962-07-02
US3459892A (en) * 1965-09-14 1969-08-05 Bendix Corp Digital data transmission system wherein a binary level is represented by a change in the amplitude of the transmitted signal

Also Published As

Publication number Publication date
DE1903629A1 (de) 1969-07-31
DE1903629B2 (de) 1971-06-09
US3517117A (en) 1970-06-23
FR2005209A1 (US07582779-20090901-C00044.png) 1969-12-12
FR2005209B1 (US07582779-20090901-C00044.png) 1974-07-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee