SE8003855L - CHANNEL IDENTIFICATION DEVICE FOR USE IN A SWEEP TYPE VOTING SYSTEM - Google Patents

CHANNEL IDENTIFICATION DEVICE FOR USE IN A SWEEP TYPE VOTING SYSTEM

Info

Publication number
SE8003855L
SE8003855L SE8003855A SE8003855A SE8003855L SE 8003855 L SE8003855 L SE 8003855L SE 8003855 A SE8003855 A SE 8003855A SE 8003855 A SE8003855 A SE 8003855A SE 8003855 L SE8003855 L SE 8003855L
Authority
SE
Sweden
Prior art keywords
boundary
channel number
tuning
voltages
addressed
Prior art date
Application number
SE8003855A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
J G N Henderson
C M Wine
R J Maturo
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 SE8003855L publication Critical patent/SE8003855L/en

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)

Abstract

A channel identification apparatus for a TV receiver includes a memory 37 for storing binary signals representing boundary voltages having magnitudes corresponding to magnitudes of the tuning voltage between tuning voltage ranges for respective adjacent channels. As the memory locations at 37 are addressed, the boundary voltages are compared 49, 55 to a tuning voltages. Control apparatus 41 causes the memory location associated with the next boundary voltage to be addressed and causes channel number apparatus 43, 45 to generate binary signals representing the next channel number when the magnitude of a predetermined one of the boundary voltage associated with an addressed one of the memory locations and the tuning voltage exceeds the magnitude of the other one. Display apparatus 59 such as LED's displays the channel number represented by the binary signals generated by the channel number apparatus. Because the boundary voltages are utilized, the channel identification apparatus described is particularly suited for use in a signal seeking or manual tuning system. <IMAGE>
SE8003855A 1979-05-30 1980-05-22 CHANNEL IDENTIFICATION DEVICE FOR USE IN A SWEEP TYPE VOTING SYSTEM SE8003855L (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 (1)

Publication Number Publication Date
SE8003855L true SE8003855L (en) 1980-12-01

Family

ID=26720795

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8003855A SE8003855L (en) 1979-05-30 1980-05-22 CHANNEL IDENTIFICATION DEVICE FOR USE IN A SWEEP TYPE VOTING SYSTEM

Country Status (11)

Country Link
KR (1) KR830002299B1 (en)
AU (1) AU532355B2 (en)
DE (1) DE3020663A1 (en)
ES (1) ES491963A0 (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
ES8406020A1 (en) * 1982-09-01 1984-06-16 Rca Corp Digital aft 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
NZ193794A (en) 1984-03-30
AU5872180A (en) 1980-12-04
ES8103524A1 (en) 1981-02-16
FR2458189A1 (en) 1980-12-26
IT8022326A0 (en) 1980-05-26
IT1131190B (en) 1986-06-18
FI801674A (en) 1980-12-01
KR830003982A (en) 1983-06-30
DE3020663A1 (en) 1980-12-11
PL130381B1 (en) 1984-08-31
ES491963A0 (en) 1981-02-16
KR830002299B1 (en) 1983-10-21
AU532355B2 (en) 1983-09-29
PL224632A1 (en) 1981-02-27
GB2052903B (en) 1983-06-29
GB2052903A (en) 1981-01-28

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