GB587772A - Improvements in television receiving apparatus - Google Patents

Improvements in television receiving apparatus

Info

Publication number
GB587772A
GB587772A GB1637343A GB1637343A GB587772A GB 587772 A GB587772 A GB 587772A GB 1637343 A GB1637343 A GB 1637343A GB 1637343 A GB1637343 A GB 1637343A GB 587772 A GB587772 A GB 587772A
Authority
GB
United Kingdom
Prior art keywords
line
tube
wave
fly
cathode
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
GB1637343A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1637343A priority Critical patent/GB587772A/en
Publication of GB587772A publication Critical patent/GB587772A/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
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/24—Blanking circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

587,772. Television receivers. GEN ERAL ELECTRIC CO., Ltd., and ESPLEY, D.C. Oct. 6, 1943, No. 16373. [Class 40 (iii)] In a television system employing signals suitable for high-definition reception., e.g. above 450 lines per picture, a cheaper form of receiver giving less accurate definition utilizes only every nth scanning line and preferably every alternate one, the intervals between, the used lines being used as fly-back periods for the line-scanning time-base. In the arrangement shown in Fig. 3, the gas-discharge tube 8 fires on alternate line impulses, producing the output wave for 5, Fig. 2, which is applied to limiter tube 12 to produce the wave form shown at 6. This is applied at 20 to suppress the cathode-ray during the fly-back period, which is of equal duration to the line scan. The integrator tube 18 operates to produce the time-base voltage having the wave-form shown. at 7 for providing deflecting voltages for the cathode-ray beam in the receiving tube, these voltages appearing at 21, 22.
GB1637343A 1943-10-06 1943-10-06 Improvements in television receiving apparatus Expired GB587772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1637343A GB587772A (en) 1943-10-06 1943-10-06 Improvements in television receiving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1637343A GB587772A (en) 1943-10-06 1943-10-06 Improvements in television receiving apparatus

Publications (1)

Publication Number Publication Date
GB587772A true GB587772A (en) 1947-05-06

Family

ID=10076145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1637343A Expired GB587772A (en) 1943-10-06 1943-10-06 Improvements in television receiving apparatus

Country Status (1)

Country Link
GB (1) GB587772A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517797A (en) * 1946-04-12 1950-08-08 Maynard D Mcfarlane Film facsimile scanning

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517797A (en) * 1946-04-12 1950-08-08 Maynard D Mcfarlane Film facsimile scanning

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