ES491963A0 - IMPROVEMENTS IN DEVICES TO TUNE A TELEVISION RECEIVER TO VARIOUS CHANNELS - Google Patents

IMPROVEMENTS IN DEVICES TO TUNE A TELEVISION RECEIVER TO VARIOUS CHANNELS

Info

Publication number
ES491963A0
ES491963A0 ES491963A ES491963A ES491963A0 ES 491963 A0 ES491963 A0 ES 491963A0 ES 491963 A ES491963 A ES 491963A ES 491963 A ES491963 A ES 491963A ES 491963 A0 ES491963 A0 ES 491963A0
Authority
ES
Spain
Prior art keywords
tune
devices
television receiver
various channels
channels
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.)
Granted
Application number
ES491963A
Other languages
Spanish (es)
Other versions
ES8103524A1 (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.)
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
Priority claimed from US06/043,765 external-priority patent/US4254506A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of ES491963A0 publication Critical patent/ES491963A0/en
Publication of ES8103524A1 publication Critical patent/ES8103524A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous 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
    • H03J5/02—Discontinuous 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous 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
    • H03J5/02—Discontinuous 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
    • H03J5/0245—Discontinuous 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
    • H03J5/0254—Discontinuous 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
    • H03J5/0263—Discontinuous 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 the digital values being held in an auxiliary non erasable memory
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0033—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for voltage synthesis with a D/A converter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
ES491963A 1979-05-30 1980-05-29 Channel identification apparatus useful in a sweep tuning system Expired ES8103524A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4376479A 1979-05-30 1979-05-30
US06/043,765 US4254506A (en) 1979-05-30 1979-05-30 Channel identification apparatus useful in a multiband sweep type tuning system

Publications (2)

Publication Number Publication Date
ES491963A0 true ES491963A0 (en) 1981-02-16
ES8103524A1 ES8103524A1 (en) 1981-02-16

Family

ID=26720795

Family Applications (1)

Application Number Title Priority Date Filing Date
ES491963A Expired ES8103524A1 (en) 1979-05-30 1980-05-29 Channel identification apparatus useful in a sweep tuning system

Country Status (11)

Country Link
KR (1) KR830002299B1 (en)
AU (1) AU532355B2 (en)
DE (1) DE3020663A1 (en)
ES (1) ES8103524A1 (en)
FI (1) FI801674A (en)
FR (1) FR2458189A1 (en)
GB (1) GB2052903B (en)
IT (1) IT1131190B (en)
NZ (1) NZ193794A (en)
PL (1) PL130381B1 (en)
SE (1) SE8003855L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291413A (en) * 1979-09-28 1981-09-22 Rca Corporation Search type tuning system with direct address channel selection apparatus
ES525161A0 (en) * 1982-09-01 1984-06-16 Rca Corp "IMPROVEMENTS INTRODUCED IN A TUNING CONTROL DEVICE FOR A TELEVISION SYSTEM"
DE3342949A1 (en) * 1983-11-26 1985-06-05 Srg Schweizerische Radio- Und Fernsehgesellschaft, Bern Method for identifying the channel selection in a broadcast receiver

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1033478A (en) * 1974-07-18 1978-06-20 Sanyo Electric Co. Ltd. Automatic tuning apparatus
DE2556951B2 (en) * 1974-12-27 1981-07-16 Fujitsu Ten Ltd., Kobe, Hyogo Tuning device for radio receivers
US4048562A (en) * 1975-05-22 1977-09-13 A. C. Nielsen Company Monitoring system for voltage tunable receivers and converters utilizing voltage comparison techniques
JPS5267201A (en) * 1975-12-01 1977-06-03 Matsushita Electric Ind Co Ltd Station selecting unit
JPS5810015B2 (en) * 1975-12-24 1983-02-23 ソニー株式会社 Senkiyokusouchi
US4041535A (en) * 1976-07-22 1977-08-09 Matsushita Electric Corporation Of America Frequency synthesizer tuning system with signal seek control
US4093922A (en) * 1977-03-17 1978-06-06 Texas Instruments Incorporated Microcomputer processing approach for a non-volatile TV station memory tuning system
JPS6011852B2 (en) * 1977-09-28 1985-03-28 ソニー株式会社 Receiving machine
US4164711A (en) * 1977-10-31 1979-08-14 Rca Corporation Tuning system including a memory for storing tuning information with user controls arranged to facilitate its programming
DE2812113C2 (en) * 1978-03-20 1982-04-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt High-frequency receiver with a search device

Also Published As

Publication number Publication date
KR830003982A (en) 1983-06-30
SE8003855L (en) 1980-12-01
FI801674A (en) 1980-12-01
IT8022326A0 (en) 1980-05-26
PL224632A1 (en) 1981-02-27
KR830002299B1 (en) 1983-10-21
DE3020663A1 (en) 1980-12-11
GB2052903B (en) 1983-06-29
GB2052903A (en) 1981-01-28
ES8103524A1 (en) 1981-02-16
PL130381B1 (en) 1984-08-31
IT1131190B (en) 1986-06-18
AU532355B2 (en) 1983-09-29
NZ193794A (en) 1984-03-30
FR2458189A1 (en) 1980-12-26
AU5872180A (en) 1980-12-04

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990601