JPS5591239A - Channel selection device of frequency synthesizer - Google Patents

Channel selection device of frequency synthesizer

Info

Publication number
JPS5591239A
JPS5591239A JP16221078A JP16221078A JPS5591239A JP S5591239 A JPS5591239 A JP S5591239A JP 16221078 A JP16221078 A JP 16221078A JP 16221078 A JP16221078 A JP 16221078A JP S5591239 A JPS5591239 A JP S5591239A
Authority
JP
Japan
Prior art keywords
channel
frequency
broadcast
channel selection
key switches
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
JP16221078A
Other languages
Japanese (ja)
Other versions
JPS5948566B2 (en
Inventor
Sadahiro Takuhara
Minoru Ueda
Hirosuke Yamamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16221078A priority Critical patent/JPS5948566B2/en
Publication of JPS5591239A publication Critical patent/JPS5591239A/en
Publication of JPS5948566B2 publication Critical patent/JPS5948566B2/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
    • 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

Abstract

PURPOSE:To secure the selection of the desired image and aural signal through a single operation and then ensure the automatic fine adjustment for the frequency by providing the key switches different from the channel keys corresponding to channel numbers 1-9. CONSTITUTION:For the channel selection means for the TV channel selection system, ten units of channel key switches 41-50 are provided to correspond to channel numbers 1-9 plus 0 which function to receive the TV broadcast. In addition, frequency key switches 75 and 76 are provided separately from switches 41-50 in order to receive the image having the fixed modulation frequency and the aural signals of the broadcast other than the TV broadcast. As a result, the desired image and aural signal can be selected through a single operation, ensuring the automatic fine adjustment for the frequency.
JP16221078A 1978-12-29 1978-12-29 Frequency synthesizer tuning device Expired JPS5948566B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16221078A JPS5948566B2 (en) 1978-12-29 1978-12-29 Frequency synthesizer tuning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16221078A JPS5948566B2 (en) 1978-12-29 1978-12-29 Frequency synthesizer tuning device

Publications (2)

Publication Number Publication Date
JPS5591239A true JPS5591239A (en) 1980-07-10
JPS5948566B2 JPS5948566B2 (en) 1984-11-27

Family

ID=15750052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16221078A Expired JPS5948566B2 (en) 1978-12-29 1978-12-29 Frequency synthesizer tuning device

Country Status (1)

Country Link
JP (1) JPS5948566B2 (en)

Also Published As

Publication number Publication date
JPS5948566B2 (en) 1984-11-27

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