GB490837A - Improvements in or relating to television systems and scanning devices therefor - Google Patents

Improvements in or relating to television systems and scanning devices therefor

Info

Publication number
GB490837A
GB490837A GB31487/36A GB3148736A GB490837A GB 490837 A GB490837 A GB 490837A GB 31487/36 A GB31487/36 A GB 31487/36A GB 3148736 A GB3148736 A GB 3148736A GB 490837 A GB490837 A GB 490837A
Authority
GB
United Kingdom
Prior art keywords
carrier
scanning
frequencies
beat
television
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
GB31487/36A
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.)
INTERNAT CARRIER CALL AND TELE
Original Assignee
INTERNAT CARRIER CALL AND TELE
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 INTERNAT CARRIER CALL AND TELE filed Critical INTERNAT CARRIER CALL AND TELE
Publication of GB490837A publication Critical patent/GB490837A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector

Abstract

490,837. Television. INTERNATIONAL CARRIER-CALL & TELEVISION CORPORATION. Nov. 17, 1936, No. 31487. Void. Convention date, Dec. 16, 1935. [Class 40 (iii)] The scanning mirrors 4, 5 are mounted on rods 35 tuned to oscillate at the scanning frequencies. Each metal mirror carries a small polarized projection. Slight errors of adjustment of the mirrors are corrected by an adjustable lens 6. Separate carrier frequencies are generated at G, G1, the carrier G1 being modulated by the microphone 18 and being used to drive the scanning mirror 7. Vision signals from cell 2 are said to modulate beat currents from the generators G, G1, these beat currents rectified at 19 serving also to drive the highspeed scanner 8. At the receiver, the carrier and beat frequencies are separated by filters and phase-adjusters and applied to the sound and vision reproducers and to the respective scanning magnets.
GB31487/36A 1935-12-16 1936-11-17 Improvements in or relating to television systems and scanning devices therefor Expired GB490837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490837XA 1935-12-16 1935-12-16

Publications (1)

Publication Number Publication Date
GB490837A true GB490837A (en) 1938-08-16

Family

ID=21957964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31487/36A Expired GB490837A (en) 1935-12-16 1936-11-17 Improvements in or relating to television systems and scanning devices therefor

Country Status (3)

Country Link
BE (1) BE418996A (en)
FR (1) FR814868A (en)
GB (1) GB490837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993403A (en) * 1956-06-15 1961-07-25 Harries Television Res Ltd Periodically displaced or rotatable elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993403A (en) * 1956-06-15 1961-07-25 Harries Television Res Ltd Periodically displaced or rotatable elements

Also Published As

Publication number Publication date
FR814868A (en) 1937-07-01
BE418996A (en)

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