JPS54121001A - Channel selection device - Google Patents

Channel selection device

Info

Publication number
JPS54121001A
JPS54121001A JP2916378A JP2916378A JPS54121001A JP S54121001 A JPS54121001 A JP S54121001A JP 2916378 A JP2916378 A JP 2916378A JP 2916378 A JP2916378 A JP 2916378A JP S54121001 A JPS54121001 A JP S54121001A
Authority
JP
Japan
Prior art keywords
switch
output
channel
switching
channel selection
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
JP2916378A
Other languages
Japanese (ja)
Other versions
JPS5826209B2 (en
Inventor
Masahiro Takeshita
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 JP2916378A priority Critical patent/JPS5826209B2/en
Publication of JPS54121001A publication Critical patent/JPS54121001A/en
Publication of JPS5826209B2 publication Critical patent/JPS5826209B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE: To avoid the erroneous channel selection even in case more than two switches are operated at one time by providing the serial circuit of the diode and channel change-over switch between the output terminal and the switching signal input terminal.
CONSTITUTION: With operation of switch 8a at time t0, the channel selection state is given to channel (a). Then switch 8b is closed with 8a kept closed at t2, and thus the charging current flows to capacitor 15 via diode 13d to actuate switch circuit 3 and then to shift the output to (b) from (a). No output is given from both terminals (a) and (b) at t4, and the double charging current flows via diode 13a and 13b to continue the switching action. When the output is generated from terminal (a) at t5, the switching input becomes half. In this case, if the input is larger than minimum level l, the switching action continues. At the same time, the switch input becomes smaller than leverl l to stop the switching action. As a result, channel (a) is selected.
COPYRIGHT: (C)1979,JPO&Japio
JP2916378A 1978-03-13 1978-03-13 Channel selection device Expired JPS5826209B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2916378A JPS5826209B2 (en) 1978-03-13 1978-03-13 Channel selection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2916378A JPS5826209B2 (en) 1978-03-13 1978-03-13 Channel selection device

Publications (2)

Publication Number Publication Date
JPS54121001A true JPS54121001A (en) 1979-09-19
JPS5826209B2 JPS5826209B2 (en) 1983-06-01

Family

ID=12268570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2916378A Expired JPS5826209B2 (en) 1978-03-13 1978-03-13 Channel selection device

Country Status (1)

Country Link
JP (1) JPS5826209B2 (en)

Also Published As

Publication number Publication date
JPS5826209B2 (en) 1983-06-01

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