CA1026475A - Digital system and method for determining and displaying a television channel number - Google Patents

Digital system and method for determining and displaying a television channel number

Info

Publication number
CA1026475A
CA1026475A CA184,046A CA184046A CA1026475A CA 1026475 A CA1026475 A CA 1026475A CA 184046 A CA184046 A CA 184046A CA 1026475 A CA1026475 A CA 1026475A
Authority
CA
Canada
Prior art keywords
displaying
determining
channel number
television channel
digital system
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
CA184,046A
Other languages
English (en)
French (fr)
Other versions
CA184046S (en
Inventor
Richard G. Merrell
Akio Tanaka
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio 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 Zenith Radio Corp filed Critical Zenith Radio Corp
Application granted granted Critical
Publication of CA1026475A publication Critical patent/CA1026475A/en
Expired 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
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • 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
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means
    • H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
    • H03J1/047—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's
    • H03J1/048—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's with digital indication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
CA184,046A 1973-01-26 1973-10-23 Digital system and method for determining and displaying a television channel number Expired CA1026475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00326724A US3851254A (en) 1973-01-26 1973-01-26 Digital system and method for determining and displaying a television channel number

Publications (1)

Publication Number Publication Date
CA1026475A true CA1026475A (en) 1978-02-14

Family

ID=23273421

Family Applications (1)

Application Number Title Priority Date Filing Date
CA184,046A Expired CA1026475A (en) 1973-01-26 1973-10-23 Digital system and method for determining and displaying a television channel number

Country Status (5)

Country Link
US (1) US3851254A (es)
JP (1) JPS49111544A (es)
CA (1) CA1026475A (es)
DE (1) DE2404099A1 (es)
ES (1) ES422695A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961266A (en) * 1974-01-03 1976-06-01 Zenith Radio Corporation Channel seeking tuning system
CA1055625A (en) * 1974-02-21 1979-05-29 Kazuyoshi Tsukamoto Indicating device for tuning apparatus
US4135158A (en) * 1975-06-02 1979-01-16 Motorola, Inc. Universal automotive electronic radio
US4005369A (en) * 1975-08-04 1977-01-25 Zenith Radio Corporation AC line multiplexing for a multi-digit display system
US4419769A (en) * 1976-03-08 1983-12-06 General Instrument Corporation Digital tuning system for a varactor tuner employing feedback means for improved tuning accuracy
US4225972A (en) * 1978-05-30 1980-09-30 Nippon Gakki Seizo Kabushiki Kaisha System for indicating frequency of station signal received by superheterodyne radio receiver
JPS55149540A (en) * 1979-05-11 1980-11-20 Hitachi Ltd Channel display unit
US4876736A (en) * 1987-09-23 1989-10-24 A. C. Nielsen Company Method and apparatus for determining channel reception of a receiver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753119A (en) * 1971-04-07 1973-08-14 Magnavox Co Digital tuning indicator

Also Published As

Publication number Publication date
DE2404099A1 (de) 1974-08-01
JPS49111544A (es) 1974-10-24
US3851254A (en) 1974-11-26
ES422695A1 (es) 1976-08-01

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19950214