FR714881A - Improvements to television systems - Google Patents

Improvements to television systems

Info

Publication number
FR714881A
FR714881A FR714881DA FR714881A FR 714881 A FR714881 A FR 714881A FR 714881D A FR714881D A FR 714881DA FR 714881 A FR714881 A FR 714881A
Authority
FR
France
Prior art keywords
television systems
television
systems
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
French (fr)
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 by Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR714881A publication Critical patent/FR714881A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Eye Examination Apparatus (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Audible And Visible Signals (AREA)
  • Telephone Set Structure (AREA)
  • Transforming Electric Information Into Light Information (AREA)
FR714881D 1930-03-29 1931-03-28 Improvements to television systems Expired FR714881A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US439986A US1805594A (en) 1930-03-29 1930-03-29 Communicating system
US442503A US2099115A (en) 1930-03-29 1930-04-08 Communication system

Publications (1)

Publication Number Publication Date
FR714881A true FR714881A (en) 1931-11-30

Family

ID=40498202

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714881D Expired FR714881A (en) 1930-03-29 1931-03-28 Improvements to television systems

Country Status (4)

Country Link
US (2) US1805594A (en)
BE (1) BE375422A (en)
FR (1) FR714881A (en)
GB (2) GB375422A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510046A (en) * 1947-04-18 1950-05-30 Zenith Radio Corp Radio-wire signaling system
NL198601A (en) * 1954-09-30
DE3009404A1 (en) * 1980-03-12 1981-09-17 Philips Patentverwaltung Gmbh, 2000 Hamburg DEVICE FOR ADJUSTING A MOVABLE ELECTROACUTIC SOUND TRANSDUCER
US4845636A (en) * 1986-10-17 1989-07-04 Walker Mark E Remote transaction system
US5202957A (en) * 1990-08-09 1993-04-13 Future Communications Full motion video telephone system
US20020087413A1 (en) * 2000-09-08 2002-07-04 Agent Ai, Inc. Vending machine adapted to vend age-restricted items

Also Published As

Publication number Publication date
GB375785A (en) 1932-06-28
GB375422A (en) 1932-06-27
US2099115A (en) 1937-11-16
BE375422A (en) 1931-01-31
US1805594A (en) 1931-05-19

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