ES402488A1 - Demodulation system - Google Patents

Demodulation system

Info

Publication number
ES402488A1
ES402488A1 ES402488A ES402488A ES402488A1 ES 402488 A1 ES402488 A1 ES 402488A1 ES 402488 A ES402488 A ES 402488A ES 402488 A ES402488 A ES 402488A ES 402488 A1 ES402488 A1 ES 402488A1
Authority
ES
Spain
Prior art keywords
line
components
pal
phase
output
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
ES402488A
Other languages
Spanish (es)
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.)
RCA Corp
Original Assignee
RCA 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.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of ES402488A1 publication Critical patent/ES402488A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/642—Multi-standard receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

"Refinements in television receivers for PAL/SECAM systems" fitted with normal PAL components to elaborate the line-by-line phase inversion of a color signal and to verify the phase of a line-by-line switching device, and components of SECAM reception that make use of some of the PAL operating components such as the delay line of a horizontal line period, characterized by the fact that said receivers comprise, for SECAN chroma, frequency demodulating means arranged to send demodulated color signals, by line shift per line at an output, an amplitude modulator to feed the demodulated color signals, in turn, at the output of a local oscillator intended as one of the normal PAL components, said output being fed to the amplitude modulator through a phase switched line by line between two phase changes that differ by 90º, and means that couple the signal control is thus remodulated to said normal PAL components for power, as separate demodulated color signals, at their respective outputs. (Machine-translation by Google Translate, not legally binding)
ES402488A 1971-05-07 1972-05-06 Demodulation system Expired ES402488A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1385971A GB1358551A (en) 1971-05-07 1971-05-07 Demodulation system

Publications (1)

Publication Number Publication Date
ES402488A1 true ES402488A1 (en) 1975-03-16

Family

ID=10030679

Family Applications (1)

Application Number Title Priority Date Filing Date
ES402488A Expired ES402488A1 (en) 1971-05-07 1972-05-06 Demodulation system

Country Status (6)

Country Link
BE (1) BE783041A (en)
DE (1) DE2221888C3 (en)
ES (1) ES402488A1 (en)
FR (1) FR2137595B1 (en)
GB (1) GB1358551A (en)
IT (1) IT955273B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288439A1 (en) 1974-10-15 1976-05-14 Thomson Brandt COLOR TELEVISION SEQUENTIAL SIGNAL TRANSCODER DEVICE
IT1050650B (en) * 1975-11-17 1981-03-20 Indesit TELEVISION CHROMATIC SIGNAL PROCESSOR CIRCUIT
EP0003393B1 (en) 1978-01-18 1982-06-23 Rca Corporation Chroma demodulator circuit for secam television signals
US4240102A (en) * 1978-03-16 1980-12-16 Rca Corporation Identification system for SECAM or SECAM/PAL color television receivers
DE3065643D1 (en) * 1979-01-09 1983-12-29 Rca Corp Luminance delay control apparatus in pal/secam television receiver
EP0013597A1 (en) * 1979-01-09 1980-07-23 Rca Corporation Signal switching apparatus
NL8005532A (en) * 1980-10-07 1982-05-03 Philips Nv TRANSCODE SWITCH.

Also Published As

Publication number Publication date
FR2137595B1 (en) 1977-04-01
IT955273B (en) 1973-09-29
DE2221888C3 (en) 1979-09-27
DE2221888B2 (en) 1974-11-14
FR2137595A1 (en) 1972-12-29
GB1358551A (en) 1974-07-03
DE2221888A1 (en) 1972-11-23
BE783041A (en) 1972-09-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19940530