Generation of additional signals

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CPC
H04M1/53

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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M1/00Substation equipment

Current Industry

H04M1/53Generation of additional signals

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Patents Grantslast 30 patents

Information Patent Grant
Intelligent and automatic calling process
- Patent number 8,472,613
- Issue date Jun 25, 2013
- Sprint Communications Company L.P.
- James J. Pan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Premised based 3-way call detection device
- Patent number 6,795,540
- Issue date Sep 21, 2004
- John Beck Mow
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of transmitting telephone number in wireless local loop system
- Patent number 6,580,922
- Issue date Jun 17, 2003
- Hyundai Electronics Ind. Co., Ltd.
- Sun Chan Kweon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone burst generator and its application to telephony
- Patent number 6,519,338
- Issue date Feb 11, 2003
- Advanced Fibre Communications, Inc.
- Martin Fornage
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Flash-hook Caller ID
- Patent number 6,075,850
- Issue date Jun 13, 2000
- Lucent Technologies Inc.
- Syed S. Ali
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic telephone answering apparatus
- Patent number 5,982,855
- Issue date Nov 9, 1999
- Sony Corporation
- Hiroshi Miyamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Off-hook detector for headset
- Patent number 5,832,075
- Issue date Nov 3, 1998
- Mitel Corporation
- Ed Gancarcik
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Active digit cancelling parallel dialer
- Patent number 5,706,341
- Issue date Jan 6, 1998
- Mitel, Inc.
- John R. Zabel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting an attempted three-way conferenc...
- Patent number 5,539,812
- Issue date Jul 23, 1996
- Dwight W. Kitchin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for selectively generating control signals in...
- Patent number 5,490,214
- Issue date Feb 6, 1996
- Voice Technologies Group, Inc.
- David M. Straitiff
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting and responding to hook flash eve...
- Patent number 5,319,702
- Issue date Jun 7, 1994
- Tele-Matic Corporation
- Dwight W. Kitchin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic headset telephone
- Patent number 4,975,949
- Issue date Dec 4, 1990
- Plantronics, Inc.
- Jeff M. Wimsatt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone instrument
- Patent number 4,887,295
- Issue date Dec 12, 1989
- Siliconix Limited
- James O. M. Jenkins
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit arrangement for a telephone station with earth connection t...
- Patent number 4,841,568
- Issue date Jun 20, 1989
- Siemens Aktiengesellschaft
- Juergen Riesmeyer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone dialing system
- Patent number 4,817,136
- Issue date Mar 28, 1989
- Richard M. Rhoads
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit arrangement for a telephone station with ground connection
- Patent number 4,809,322
- Issue date Feb 28, 1989
- Siemens Aktiengesellschaft
- Juergen Riesmeyer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone hookswitch flasher
- Patent number 4,614,845
- Issue date Sep 30, 1986
- Conlon; Peter
- Peter Conlon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Arrangement for opening the loop for a well-defined time interval f...
- Patent number 4,614,843
- Issue date Sep 30, 1986
- U.S. Philips Corporation
- Jean-Pierre Coulmance
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic telephone with feature access and speed dialing includin...
- Patent number 4,613,730
- Issue date Sep 23, 1986
- Rockwell International Corp.
- William A. Fechalos
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiple use digital tone generator in telephone
- Patent number 4,571,462
- Issue date Feb 18, 1986
- U.S. Philips Corporation
- Daniel J. G. Janssen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual timing circuit for telephone subscriber's instrument
- Patent number 4,492,823
- Issue date Jan 8, 1985
- GTE Business Communication Systems
- Miranda L. James
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone activated hold circuit
- Patent number 4,419,543
- Issue date Dec 6, 1983
- Edward C. Kelm
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hook flash signal actuated telephone control device
- Patent number 4,387,274
- Issue date Jun 7, 1983
- GTI Corporation
- Jeffrey D. Stein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone station set with improved flash signalling
- Patent number 4,313,037
- Issue date Jan 26, 1982
- Rolm Corporation
- Robert R. Shepard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone outpulsing circuit
- Patent number 4,306,119
- Issue date Dec 15, 1981
- Bell Telephone Laboratories, Incorporated
- Walter G. Kutzavitch
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Fixed impulse generator for hook switch flash
- Patent number 4,251,693
- Issue date Feb 17, 1981
- Gary F. Christiansen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone set with loop current interruption timing control
- Patent number 4,086,440
- Issue date Apr 25, 1978
- Chestel, Inc.
- Robert J. Hurle
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TONE BURST GENERATOR AND ITS APPLICATION TO TELEPHONY
- Publication number 20020003872
- Publication date Jan 10, 2002
- MARTIN FORNAGE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Generation of additional signals

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Intelligent and automatic calling process

Premised based 3-way call detection device

Method of transmitting telephone number in wireless local loop system

Tone burst generator and its application to telephony

Flash-hook Caller ID

Automatic telephone answering apparatus

Off-hook detector for headset

Active digit cancelling parallel dialer

Method and apparatus for detecting an attempted three-way conferenc...

Method and apparatus for selectively generating control signals in...

Method and apparatus for detecting and responding to hook flash eve...

Electronic headset telephone

Telephone instrument

Circuit arrangement for a telephone station with earth connection t...

Telephone dialing system

Circuit arrangement for a telephone station with ground connection

Telephone hookswitch flasher

Arrangement for opening the loop for a well-defined time interval f...

Electronic telephone with feature access and speed dialing includin...

Multiple use digital tone generator in telephone

Dual timing circuit for telephone subscriber's instrument

Tone activated hold circuit

Hook flash signal actuated telephone control device

Telephone station set with improved flash signalling

Telephone outpulsing circuit

Fixed impulse generator for hook switch flash

Telephone set with loop current interruption timing control

Patents Applicationslast 30 patents

TONE BURST GENERATOR AND ITS APPLICATION TO TELEPHONY