GB2009546A - Television receiver IF and detector arrangement - Google Patents

Television receiver IF and detector arrangement

Info

Publication number
GB2009546A
GB2009546A GB7842157A GB7842157A GB2009546A GB 2009546 A GB2009546 A GB 2009546A GB 7842157 A GB7842157 A GB 7842157A GB 7842157 A GB7842157 A GB 7842157A GB 2009546 A GB2009546 A GB 2009546A
Authority
GB
United Kingdom
Prior art keywords
sound
amplifier
output
video
television receiver
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.)
Withdrawn
Application number
GB7842157A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB2009546A publication Critical patent/GB2009546A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/4446—IF amplifier circuits specially adapted for B&W TV
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Television Receiver Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

A television receiver I.F. circuit arrangement has an integrated circuit package which includes a surface acoustic wave filter 2 having two outputs one 3 for video I.F. and the other 4 for sound I.F. and two detectors 6,9 are provided for vision and sound respectively. An input to both mixers 6 and 9 is derived from the video I.F. signal output from an amplifier 5 via a limiter 7. The detected video output of mixer 6 is fed via an a.g.c. amplifier 9 to provide a.g.c. for amplifier 5. The sound I.F. signal is limited at 10 and a detected sound signal output is obtained from mixer 9. The surface acoustic wave filter 2 has an input transducer 13, Figure 2, coupled via a directional coupler 19 (1) to an output transducer 20 having a bandwidth covering the chroma and luminance sub-carriers but in which the sound sub-carrier is attenuated by about 20db and (2) to an output transducer 26 which provides sound I.F. signals. <IMAGE>
GB7842157A 1977-11-16 1978-10-27 Television receiver IF and detector arrangement Withdrawn GB2009546A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4758977 1977-11-16

Publications (1)

Publication Number Publication Date
GB2009546A true GB2009546A (en) 1979-06-13

Family

ID=10445534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7842157A Withdrawn GB2009546A (en) 1977-11-16 1978-10-27 Television receiver IF and detector arrangement

Country Status (8)

Country Link
JP (1) JPS5478620A (en)
BR (1) BR7807531A (en)
DE (1) DE2848898A1 (en)
ES (1) ES475148A1 (en)
FR (1) FR2409647A1 (en)
GB (1) GB2009546A (en)
IT (1) IT1101161B (en)
NL (1) NL7811294A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094683A3 (en) * 1982-05-19 1984-12-19 Hitachi, Ltd. Surface acoustic wave device
EP0220927A1 (en) * 1985-10-23 1987-05-06 Rca Licensing Corporation Television sound signal processor
GB2198617A (en) * 1986-11-25 1988-06-15 Int Telesystems Inc Restricted access television transmission system
GB2275392A (en) * 1982-08-12 1994-08-24 Secr Defence Signal processing for interference suppression
GB2287580A (en) * 1994-03-04 1995-09-20 Murata Manufacturing Co Piezoelectric saw resonators
EP0762642A1 (en) * 1995-08-31 1997-03-12 Murata Manufacturing Co., Ltd. Surface wave resonator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773514A (en) * 1980-10-25 1982-05-08 Fujitsu Ltd Surface acoustic wave filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB643694A (en) * 1948-05-26 1950-09-27 Standard Telephones Cables Ltd Improvements in or relating to television receivers
US2699497A (en) * 1950-06-22 1955-01-11 Du Mont Allen B Lab Inc Television receiver
US2944106A (en) * 1958-03-07 1960-07-05 Rca Corp Sound cancellation in television receivers
TR19145A (en) * 1975-02-07 1978-07-01 Hitachi Ltd COLOR TELEVISION RECEIVER

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094683A3 (en) * 1982-05-19 1984-12-19 Hitachi, Ltd. Surface acoustic wave device
GB2275392A (en) * 1982-08-12 1994-08-24 Secr Defence Signal processing for interference suppression
GB2275392B (en) * 1982-08-12 1995-01-11 Secr Defence Signal processing for interference suppression
EP0220927A1 (en) * 1985-10-23 1987-05-06 Rca Licensing Corporation Television sound signal processor
GB2198617A (en) * 1986-11-25 1988-06-15 Int Telesystems Inc Restricted access television transmission system
GB2287580A (en) * 1994-03-04 1995-09-20 Murata Manufacturing Co Piezoelectric saw resonators
GB2287580B (en) * 1994-03-04 1998-04-01 Murata Manufacturing Co Piezoelectric resonators
US5767603A (en) * 1994-03-04 1998-06-16 Murata Manufacturing Co., Ltd. Piezoelectric resonators for trap circuits having a plurality of trap frequencies
EP0762642A1 (en) * 1995-08-31 1997-03-12 Murata Manufacturing Co., Ltd. Surface wave resonator
US5914554A (en) * 1995-08-31 1999-06-22 Murata Manufacturing Co., Ltd. Surface wave resonator

Also Published As

Publication number Publication date
DE2848898A1 (en) 1979-05-17
ES475148A1 (en) 1979-05-01
IT1101161B (en) 1985-09-28
IT7829827A0 (en) 1978-11-15
NL7811294A (en) 1979-05-18
JPS5478620A (en) 1979-06-22
FR2409647A1 (en) 1979-06-15
BR7807531A (en) 1979-07-31

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)