JPS56114151U - - Google Patents
Info
- Publication number
- JPS56114151U JPS56114151U JP1980117404U JP11740480U JPS56114151U JP S56114151 U JPS56114151 U JP S56114151U JP 1980117404 U JP1980117404 U JP 1980117404U JP 11740480 U JP11740480 U JP 11740480U JP S56114151 U JPS56114151 U JP S56114151U
- Authority
- JP
- Japan
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
- H04M1/505—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies signals generated in digital form
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Input From Keyboards Or The Like (AREA)
- Liquid Crystal Display Device Control (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US617955 | 1975-09-25 | ||
| US05/617,955 US4061886A (en) | 1975-09-29 | 1975-09-29 | Dual tone multiple frequency generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56114151U true JPS56114151U (US06653308-20031125-C00199.png) | 1981-09-02 |
| JPS5934204Y2 JPS5934204Y2 (ja) | 1984-09-21 |
Family
ID=24475745
Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11704276A Pending JPS52144904A (en) | 1975-09-29 | 1976-09-29 | Signal generator |
| JP9509079A Pending JPS5558651A (en) | 1975-09-29 | 1979-07-27 | Multiple frequency signal generator |
| JP9509179A Pending JPS5555650A (en) | 1975-09-29 | 1979-07-27 | Telephone communication system |
| JP1980117404U Expired JPS5934204Y2 (ja) | 1975-09-25 | 1980-08-19 | 信号発生器 |
| JP1983169982U Granted JPS5984948U (ja) | 1975-09-29 | 1983-11-01 | 多周波信号発生器 |
| JP1983169983U Granted JPS5984949U (ja) | 1975-09-29 | 1983-11-01 | 電話通信装置 |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11704276A Pending JPS52144904A (en) | 1975-09-29 | 1976-09-29 | Signal generator |
| JP9509079A Pending JPS5558651A (en) | 1975-09-29 | 1979-07-27 | Multiple frequency signal generator |
| JP9509179A Pending JPS5555650A (en) | 1975-09-29 | 1979-07-27 | Telephone communication system |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983169982U Granted JPS5984948U (ja) | 1975-09-29 | 1983-11-01 | 多周波信号発生器 |
| JP1983169983U Granted JPS5984949U (ja) | 1975-09-29 | 1983-11-01 | 電話通信装置 |
Country Status (9)
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2808256C2 (de) * | 1978-02-25 | 1984-05-30 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur Kompensation von Oberwellen |
| US4196318A (en) * | 1978-09-29 | 1980-04-01 | Bell Telephone Laboratories, Incorporated | Electronically-switched multifrequency generator for providing tone signaling |
| JPS5643849A (en) * | 1979-09-17 | 1981-04-22 | Taiko Denki Seisakusho:Kk | Check code transmission system of data transmission using push-button dial signal |
| US4352958A (en) * | 1979-12-13 | 1982-10-05 | Bell Telephone Laboratories, Incorporated | Electronically-switched multifrequency generator with transducer control |
| DE2952380C2 (de) * | 1979-12-24 | 1984-02-09 | Hagenuk GmbH, 2300 Kiel | Schaltungsanordnung zur Datenübertragung auf Fernsprechleitungen |
| WO1982000231A1 (en) * | 1980-06-30 | 1982-01-21 | Holberg D | Tone generator circuit |
| US4406926A (en) * | 1980-12-19 | 1983-09-27 | International Telephone And Telegraph Corporation | Telephone station circuit using digital tone generation |
| US4472601A (en) * | 1982-07-14 | 1984-09-18 | Rca Corporation | Control circuit for telephone receiver and transmitter |
| JPS5981957A (ja) * | 1982-11-02 | 1984-05-11 | Nippon Telegr & Teleph Corp <Ntt> | デイジタル式電話端末装置用２周波信号発振器 |
| US4471170A (en) * | 1983-02-24 | 1984-09-11 | Motorola, Inc. | Non-integer programmable counter |
| NL8303701A (nl) * | 1983-10-27 | 1985-05-17 | Philips Nv | Dtmf-telefoontoestel met meervoudig gebruik van de logica van de digitale toongenerator. |
| JPS60136461A (ja) * | 1983-12-26 | 1985-07-19 | Toshiba Corp | Ｄｔｍｆ信号発生装置 |
| US4563548A (en) * | 1984-04-10 | 1986-01-07 | Advanced Micro Devices, Inc. | Method and circuit for telephone dialing signal generation |
| US4718057A (en) | 1985-08-30 | 1988-01-05 | Advanced Micro Devices, Inc. | Streamlined digital signal processor |
| US5311580A (en) * | 1988-07-18 | 1994-05-10 | Canon Kabushiki Kaisha | Communication apparatus for providing a modulated analog wave |
| NL8901018A (nl) * | 1989-04-24 | 1990-11-16 | Philips Nv | Electronisch telefoontoestel. |
| JP2860962B2 (ja) * | 1990-05-28 | 1999-02-24 | ローム 株式会社 | 電話装置のｄｔｍｆ信号送出回路 |
| US6677513B1 (en) | 1998-05-29 | 2004-01-13 | International Business Machines Corporation | System and method for generating and attenuating digital tones |
| US20100261435A1 (en) * | 2009-04-09 | 2010-10-14 | Broadcom Corporation | Multiple frequency band information signal frequency band compression |
| US10847211B2 (en) * | 2018-04-18 | 2020-11-24 | Arm Limited | Latch circuitry for memory applications |
| TWI835565B (zh) * | 2023-02-17 | 2024-03-11 | 瑞昱半導體股份有限公司 | 可提升預失真效果的收發機系統以及其控制方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3500213A (en) * | 1966-06-03 | 1970-03-10 | Cit Alcatel | Sinewave synthesizer for telegraph systems |
| JPS4831808A (US06653308-20031125-C00199.png) * | 1971-08-27 | 1973-04-26 | ||
| JPS4984712A (US06653308-20031125-C00199.png) * | 1972-11-29 | 1974-08-14 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525819A (en) * | 1968-04-09 | 1970-08-25 | Bell Telephone Labor Inc | Electronic common switch for a telephone set |
| US3772681A (en) * | 1970-10-14 | 1973-11-13 | Post Office | Frequency synthesiser |
| US3778556A (en) * | 1971-07-02 | 1973-12-11 | Telecommunications Techn Inc | Telephone signaling and testing apparatus with provisions for either pulse or multifrequency dialing |
| US3787836A (en) * | 1972-06-15 | 1974-01-22 | Bell Telephone Labor Inc | Multitone telephone dialing circuit employing digital-to-analog tone synthesis |
| US3941942A (en) * | 1974-01-02 | 1976-03-02 | Motorola, Inc. | Two of eight tone encoder |
-
1975
- 1975-09-29 US US05/617,955 patent/US4061886A/en not_active Expired - Lifetime
-
1976
- 1976-05-11 BR BR7602945A patent/BR7602945A/pt unknown
- 1976-09-22 GB GB29839/78A patent/GB1539409A/en not_active Expired
- 1976-09-22 GB GB39310/76A patent/GB1539408A/en not_active Expired
- 1976-09-22 GB GB29840/78A patent/GB1539410A/en not_active Expired
- 1976-09-25 DE DE2643359A patent/DE2643359C2/de not_active Expired
- 1976-09-28 NL NLAANVRAGE7610744,A patent/NL178046C/xx not_active IP Right Cessation
- 1976-09-28 IT IT7651475A patent/IT1073417B/it active
- 1976-09-29 BE BE171041A patent/BE846705A/xx unknown
- 1976-09-29 JP JP11704276A patent/JPS52144904A/ja active Pending
-
1979
- 1979-07-27 JP JP9509079A patent/JPS5558651A/ja active Pending
- 1979-07-27 JP JP9509179A patent/JPS5555650A/ja active Pending
-
1980
- 1980-08-19 JP JP1980117404U patent/JPS5934204Y2/ja not_active Expired
-
1983
- 1983-11-01 JP JP1983169982U patent/JPS5984948U/ja active Granted
- 1983-11-01 JP JP1983169983U patent/JPS5984949U/ja active Granted
-
1984
- 1984-07-19 HK HK565/84A patent/HK56584A/xx unknown
- 1984-07-19 HK HK566/84A patent/HK56684A/xx unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3500213A (en) * | 1966-06-03 | 1970-03-10 | Cit Alcatel | Sinewave synthesizer for telegraph systems |
| JPS4831808A (US06653308-20031125-C00199.png) * | 1971-08-27 | 1973-04-26 | ||
| JPS4984712A (US06653308-20031125-C00199.png) * | 1972-11-29 | 1974-08-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5984949U (ja) | 1984-06-08 |
| JPS6329325Y2 (US06653308-20031125-C00199.png) | 1988-08-08 |
| JPS52144904A (en) | 1977-12-02 |
| HK56684A (en) | 1984-07-27 |
| DE2643359A1 (de) | 1977-04-07 |
| BE846705A (fr) | 1977-01-17 |
| JPS5984948U (ja) | 1984-06-08 |
| GB1539410A (en) | 1979-01-31 |
| JPS5555650A (en) | 1980-04-23 |
| GB1539409A (en) | 1979-01-31 |
| HK56584A (en) | 1984-07-27 |
| DE2643359C2 (de) | 1985-08-22 |
| GB1539408A (en) | 1979-01-31 |
| JPS626757Y2 (US06653308-20031125-C00199.png) | 1987-02-17 |
| BR7602945A (pt) | 1977-06-07 |
| US4061886A (en) | 1977-12-06 |
| NL178046C (nl) | 1986-01-02 |
| NL178046B (nl) | 1985-08-01 |
| JPS5934204Y2 (ja) | 1984-09-21 |
| IT1073417B (it) | 1985-04-17 |
| JPS5558651A (en) | 1980-05-01 |
| NL7610744A (nl) | 1977-03-31 |
