GB2000926B - Channel selector for television receiver - Google Patents

Channel selector for television receiver

Info

Publication number
GB2000926B
GB2000926B GB7826602A GB7826602A GB2000926B GB 2000926 B GB2000926 B GB 2000926B GB 7826602 A GB7826602 A GB 7826602A GB 7826602 A GB7826602 A GB 7826602A GB 2000926 B GB2000926 B GB 2000926B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
television receiver
channel selector
selector
channel
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
GB7826602A
Other versions
GB2000926A (en )
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments 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
Grant date

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02Automatic frequency control
    • H03J7/04Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/18Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H03B5/1841Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a strip line resonator
    • H03B5/1847Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a strip line resonator the active element in the amplifier being a semiconductor device
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator
    • H03B5/326Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/12Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
    • H03D7/125Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes with field effect transistors
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16Multiple-frequency-changing
    • H03D7/161Multiple-frequency-changing all the frequency changers being connected in cascade
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/64Filters using surface acoustic waves
    • H03H9/6403Programmable filters
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0254Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator
    • H03B5/36Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator active element in amplifier being semiconductor device
    • H03B5/362Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator active element in amplifier being semiconductor device the amplifier being a single transistor
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02Details
    • H03H9/125Driving means, e.g. electrodes, coils
    • H03H9/145Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14502Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14508Polyphase SAW transducers
GB7826602A 1977-07-05 1978-06-09 Channel selector for television receiver Expired GB2000926B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US05813202 US4162451A (en) 1977-07-05 1977-07-05 MESFET-device surface-wave-device channel selector
US05813137 US4162452A (en) 1977-07-05 1977-07-05 Channel selection for a television receiver having low-gain high frequency RF-IF section
US05813198 US4408347A (en) 1977-07-29 1977-07-29 High-frequency channel selector having fixed bandpass filters in the RF section

Publications (2)

Publication Number Publication Date
GB2000926A true GB2000926A (en) 1979-01-17
GB2000926B true GB2000926B (en) 1982-04-28

Family

ID=27420087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826602A Expired GB2000926B (en) 1977-07-05 1978-06-09 Channel selector for television receiver

Country Status (6)

Country Link
JP (1) JPH0121648B2 (en)
CA (1) CA1110356A (en)
DE (1) DE2829538A1 (en)
FR (1) FR2408944B1 (en)
GB (1) GB2000926B (en)
NL (1) NL7807307A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0116061B2 (en) * 1980-10-29 1989-03-22 Matsushita Electric Ind Co Ltd
JPS6235291B2 (en) * 1981-07-07 1987-07-31 Matsushita Electric Ind Co Ltd
US4408348A (en) * 1981-08-19 1983-10-04 Rca Corporation Multiband tuning system for a television receiver
US4397037A (en) * 1981-08-19 1983-08-02 Rca Corporation Diplexer for television tuning systems
JPS58179005A (en) * 1982-04-14 1983-10-20 Toshiba Corp Converter device
DE3821715C2 (en) * 1988-06-28 1990-11-29 Telefunken Electronic Gmbh, 7100 Heilbronn, De
DE3821716C2 (en) * 1988-06-28 1990-11-29 Telefunken Electronic Gmbh, 7100 Heilbronn, De
US5175711A (en) * 1988-10-03 1992-12-29 Hitachi, Ltd. Surface acoustic wave apparatus and method of productivity and adjustment of the same
JP2685537B2 (en) * 1988-10-03 1997-12-03 株式会社日立製作所 The surface acoustic wave device, a method of manufacturing method the adjustment, and a communication apparatus using the same
DE4228834A1 (en) * 1992-08-29 1994-03-03 Thomson Brandt Gmbh Oscillating signal generating stage e.g. PLL balancing method - superimposing signal on oscillator control signal causing control signal value to correspond to neutral value
DE4332161A1 (en) * 1993-09-22 1995-03-23 Thomson Brandt Gmbh RF receiver

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142631B (en) * 1959-07-15 1963-01-24 Loewe Opta Ag TV reception circuit
US3686518A (en) * 1970-09-02 1972-08-22 Clinton S Hartmann Unidirectional surface wave transducers
US3787612A (en) * 1972-07-03 1974-01-22 Zenith Radio Corp Signal processing system for television receiver having acoustic surface wave devices for improved tuning and video demodulation
DE2334570B1 (en) * 1973-07-07 1975-03-06 Philips Patentverwaltung Tunable high-frequency input circuit arrangement for a Fernsehempfaenger
US3946342A (en) * 1973-08-10 1976-03-23 Texas Instruments Incorporated Weighting surface wave filters by withdrawing electrodes
GB1440950A (en) * 1973-10-12 1976-06-30 Mullard Ltd Acoustic surface-wave devices
FR2263635A1 (en) * 1974-03-05 1975-10-03 Oak Holland Bv High stability frequency converter - uses three mixing circuits and a quartz controlled pilot oscillator
US3942120A (en) * 1974-07-22 1976-03-02 Texas Instruments Incorporated SWD FM receiver circuit
US3946338A (en) * 1975-06-09 1976-03-23 Bell Telephone Laboratories, Incorporated Acoustic wave devices involving perturbation of acoustic velocity by diffusion of metals

Also Published As

Publication number Publication date Type
JPH0121648B2 (en) 1989-04-21 grant
CA1110356A1 (en) grant
JPS5418208A (en) 1979-02-10 application
FR2408944A1 (en) 1979-06-08 application
GB2000926A (en) 1979-01-17 application
CA1110356A (en) 1981-10-06 grant
FR2408944B1 (en) 1985-12-06 grant
NL7807307A (en) 1979-01-09 application
DE2829538A1 (en) 1979-01-25 application

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19980608