JPS5511646A - Tone visible display system for telephone set - Google Patents
Tone visible display system for telephone setInfo
- Publication number
- JPS5511646A JPS5511646A JP8433878A JP8433878A JPS5511646A JP S5511646 A JPS5511646 A JP S5511646A JP 8433878 A JP8433878 A JP 8433878A JP 8433878 A JP8433878 A JP 8433878A JP S5511646 A JPS5511646 A JP S5511646A
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- tone
- visible display
- turned
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To secure the visible display in accordance with the types of tones and then to facilitate the operation for calling by giving light emission to the light emitting element with the AC component of the tone. CONSTITUTION:Visible display unit K is inserted in parallel to telephone receiver T into the ordinary telephone set comprising dial mechanism DS, bell B, transmitter microphone T, telephone receiver R and others. Then switch SW of unit K is turned on with receiver R picked up, and thus relay RL turns on switch rl1 and off rl2 each. Then light emission is given to light emitting disde P with the AC component contained in the signal via conductance L and in accordance with the dial tone, the ringing and the busy tone each. Thus the types of tones can be identified by the transmittent state of the light emission without fitting the receiver to the ear. When the called subscriber picks up the handset, relay RL becomes inactive to secure the talking possible state under which switch rl1 turned off and rl2 turned on each.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8433878A JPS5511646A (en) | 1978-07-11 | 1978-07-11 | Tone visible display system for telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8433878A JPS5511646A (en) | 1978-07-11 | 1978-07-11 | Tone visible display system for telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5511646A true JPS5511646A (en) | 1980-01-26 |
Family
ID=13827708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8433878A Pending JPS5511646A (en) | 1978-07-11 | 1978-07-11 | Tone visible display system for telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5511646A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57138453U (en) * | 1981-02-25 | 1982-08-30 | ||
JPS61121053U (en) * | 1985-01-17 | 1986-07-30 | ||
JPS61218252A (en) * | 1985-03-22 | 1986-09-27 | Sanyo Electric Co Ltd | Display circuit for telephone set |
JPS62167441U (en) * | 1986-04-11 | 1987-10-23 | ||
JPH0373059U (en) * | 1989-11-16 | 1991-07-23 | ||
JPH0631253U (en) * | 1992-09-29 | 1994-04-22 | アイホン株式会社 | Telephone with light emitting diode for call display |
-
1978
- 1978-07-11 JP JP8433878A patent/JPS5511646A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57138453U (en) * | 1981-02-25 | 1982-08-30 | ||
JPH021977Y2 (en) * | 1981-02-25 | 1990-01-18 | ||
JPS61121053U (en) * | 1985-01-17 | 1986-07-30 | ||
JPS61218252A (en) * | 1985-03-22 | 1986-09-27 | Sanyo Electric Co Ltd | Display circuit for telephone set |
JPH0422384B2 (en) * | 1985-03-22 | 1992-04-16 | Sanyo Electric Co | |
JPS62167441U (en) * | 1986-04-11 | 1987-10-23 | ||
JPH0373059U (en) * | 1989-11-16 | 1991-07-23 | ||
JPH0631253U (en) * | 1992-09-29 | 1994-04-22 | アイホン株式会社 | Telephone with light emitting diode for call display |
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