JPS5630317A - Channel selector - Google Patents

Channel selector

Info

Publication number
JPS5630317A
JPS5630317A JP10537479A JP10537479A JPS5630317A JP S5630317 A JPS5630317 A JP S5630317A JP 10537479 A JP10537479 A JP 10537479A JP 10537479 A JP10537479 A JP 10537479A JP S5630317 A JPS5630317 A JP S5630317A
Authority
JP
Japan
Prior art keywords
register
channel
contents
certain time
key input
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.)
Pending
Application number
JP10537479A
Other languages
Japanese (ja)
Inventor
Ryukichi Wada
Isao Nishino
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10537479A priority Critical patent/JPS5630317A/en
Publication of JPS5630317A publication Critical patent/JPS5630317A/en
Pending 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
    • 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
    • H03J5/0272—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 used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H03J5/0281—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 used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory

Abstract

PURPOSE:To facilitate channel selection by making it possible to select a previously selected channel a certain time after the 1st switch operation by a unit that selects a TV broadcast channel by use of ten-keys. CONSTITUTION:With one of ten-keys 1 on as the 1st key input, output A of key input deciding circuit 3 is inverted to a high level to open gates 8-11, 13 and 15 and the output is stored in register 4 for the 1st figure and register 5 for the 2nd figure. In this state, when the 2nd key input is generated within a certain time, the contents of register 5 are cleared and the contents of register 4 are sent to register 6 as the units digit that corresponds to a channel number, performing channel- selecting operation. When the 2nd key operation is done within the certain time, deciding circuit 3 closes gates 8-11, so that the contents of register 4 only will be modified.
JP10537479A 1979-08-18 1979-08-18 Channel selector Pending JPS5630317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10537479A JPS5630317A (en) 1979-08-18 1979-08-18 Channel selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10537479A JPS5630317A (en) 1979-08-18 1979-08-18 Channel selector

Publications (1)

Publication Number Publication Date
JPS5630317A true JPS5630317A (en) 1981-03-26

Family

ID=14405910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10537479A Pending JPS5630317A (en) 1979-08-18 1979-08-18 Channel selector

Country Status (1)

Country Link
JP (1) JPS5630317A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5460521A (en) * 1977-10-24 1979-05-16 Toshiba Corp Misdisplay preventing device for channel number
JPS5494201A (en) * 1977-12-23 1979-07-25 Rca Corp Tuning system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5460521A (en) * 1977-10-24 1979-05-16 Toshiba Corp Misdisplay preventing device for channel number
JPS5494201A (en) * 1977-12-23 1979-07-25 Rca Corp Tuning system

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