JPS5650653A - Telephone answer illuminating device - Google Patents

Telephone answer illuminating device

Info

Publication number
JPS5650653A
JPS5650653A JP12710179A JP12710179A JPS5650653A JP S5650653 A JPS5650653 A JP S5650653A JP 12710179 A JP12710179 A JP 12710179A JP 12710179 A JP12710179 A JP 12710179A JP S5650653 A JPS5650653 A JP S5650653A
Authority
JP
Japan
Prior art keywords
turn
lamp
signal
output
switch
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
JP12710179A
Other languages
Japanese (ja)
Inventor
Yoshihiro Nakatani
Hisashi Tsuda
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP12710179A priority Critical patent/JPS5650653A/en
Publication of JPS5650653A publication Critical patent/JPS5650653A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Abstract

PURPOSE:To secure an effective lamp lighting and thus save the power consumption, by controlling the glowing state of the lamp in accordance with the call signal of the telephone set. CONSTITUTION:The sensor 2 is sensitive to the call signal (a) of the telephone 1, and the output signal (b) is supplied to the control circuit 4 after the amplification 3. The amplified signal (c) resets the counter CT13 and presets the up-down counter 14. The signal (g) is obtained by the output (d) of the CT14, and thus the relay 5 works to light up the lamp Lp7. And when the signal (a) comes to an end, the down-counting is carried out down to the set value of the switch part 27. After this, the output (d) is set at a low level to turn off the lamp Lp7. And the FF10 is triggered via the turn-on switch 11 and the turn-off switch 12 each, and thus the turn-on and turn-off can be controlled for the lamp Lp.
JP12710179A 1979-09-29 1979-09-29 Telephone answer illuminating device Pending JPS5650653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12710179A JPS5650653A (en) 1979-09-29 1979-09-29 Telephone answer illuminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12710179A JPS5650653A (en) 1979-09-29 1979-09-29 Telephone answer illuminating device

Publications (1)

Publication Number Publication Date
JPS5650653A true JPS5650653A (en) 1981-05-07

Family

ID=14951611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12710179A Pending JPS5650653A (en) 1979-09-29 1979-09-29 Telephone answer illuminating device

Country Status (1)

Country Link
JP (1) JPS5650653A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190157A (en) * 1982-04-30 1983-11-07 Matsushita Electric Works Ltd Interphone
JPS59125249A (en) * 1983-01-05 1984-07-19 Kawasaki Steel Corp Gas blowing device for removing nonmetallic inclusion
JPS6126298U (en) * 1984-07-20 1986-02-17 敬之 住友 Lighting operation device for lighting lights
JPS61153296U (en) * 1985-03-14 1986-09-22
US5359647A (en) * 1993-05-28 1994-10-25 Plantronics, Inc. Headset in-use indicator
CN104010055A (en) * 2013-02-27 2014-08-27 深圳市海洋王照明工程有限公司 Fixed telephone illumination control circuit and telephone set

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190157A (en) * 1982-04-30 1983-11-07 Matsushita Electric Works Ltd Interphone
JPS59125249A (en) * 1983-01-05 1984-07-19 Kawasaki Steel Corp Gas blowing device for removing nonmetallic inclusion
JPS6126298U (en) * 1984-07-20 1986-02-17 敬之 住友 Lighting operation device for lighting lights
JPH0530317Y2 (en) * 1984-07-20 1993-08-03
JPS61153296U (en) * 1985-03-14 1986-09-22
US5359647A (en) * 1993-05-28 1994-10-25 Plantronics, Inc. Headset in-use indicator
CN104010055A (en) * 2013-02-27 2014-08-27 深圳市海洋王照明工程有限公司 Fixed telephone illumination control circuit and telephone set

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