Telephone used for electronic money card transaction and method of operation of the same
An object of the present invention is to provide a telephone and a method of operation of the same which are useful for the above-mentioned electronic money transaction system, and are capable of tran... Read More
Inventors: Ohki, Masayuki; Urushibara, Atsuhiko; Furuya, Jun; Ito, Shigeyuki; Kitagawa, Hiroki; Oosawa, Takao;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Fraud prevention apparatus and method for performing policing functions for telephone services
An object of the present invention is to allow telecommunications service providers to apply policing functions for telephone services on ubiquitous telephone networks that carry voice, facsimile and ... Read More
Inventors: Cox, Neil B.;, Assignee: |
On-demand communications services
FIG. 1 shows in block diagram format a communications switching system 100 which includes similarly configured access/egress switches 107 and 108 that are connected respectively to functionally analo... Read More
Inventors: Mirville, Jean-Robert; Silverman, David Phillip;, Assignee: AT&T Corp. (Middletown, NJ) |
System and method for activation of an enhanced telecommunication service
The present invention satisfies the above-described needs by providing a system and method for activation of an enhanced telecommunication service without a turn-on call by a subscriber. The present i... Read More
Inventors: Malik, Dale W.;, Assignee: Bellsouth Intellectual Property Corporation (Wilmington, DE) |
Systems and methods for extracting switch data
The present invention addresses the problems described above by providing systems and methods for extracting switch data. The systems of the present invention improve upon those above noted deficienci... Read More
Inventors: Klose, Steve W.; Fowler, Leonard R.;, Assignee: BellSouth Intellectual Property Corporation (Wilmington, DE) |
Communication system for processing caller ID information
The aforementioned problems related to the loss of caller identification information are overcome by delaying an incoming ring signal for a time duration of sufficient length to allow for the receipt ... Read More
Inventors: Chang, Aileen Y.; Fallon, Joseph Michael; Wallach, Ryan S.;, Assignee: Lucent Technologies (Murray Hill, NJ) |
Device for detecting DTMF tones
In view of the above-described drawbacks of known signaling devices, the present invention provides a self-contained signaling and control device for detecting DTMF tones and generating a signal, such... Read More
Inventors: Shaham, Israel; Shaham, Amos;, Assignee: |
Telephone monitoring and alarm device
An alert system is disclosed which combines automatic notification to a user at the home site of the existence of a cut or shorted telephone line and an off-hook circumstance, as well as notification ... Read More
Inventors: McClure, William C.;, Assignee: Command Communications, Inc. (Aurora, CO) |
Method and apparatus for detecting a call waiting signal on a telephone line connected to a modem
Therefore, it is an object of the present invention to overcome the limitations and shortcomings of the prior art. It is a further object of the present invention to have a device that can detect a ca... Read More
Inventors: Szeliga, Philip C.;, Assignee: Human Electronics, Inc. (New Hartford, NY) |
Method for managing message by using a personal computer as an operator console in a private branch exchange system
Accordingly, it is therefore an object of the present invention to provide a method for managing messages in a private branch exchange system. It is also an object to provide a method for managing mes... Read More
Inventors: Cho, Seung-Hwan;, Assignee: SamSung Electronics Co., Ltd. (Suwon, KR) |
System and method for tracking and reporting incoming calls
We claim: 1. In a public switched telephone network comprising a plurality of subscriber telephone lines, each coupled to an associated telephone switching facility, each subscriber telephone line hav... Read More
Inventors: Kay, William A.; Dague, David A.; Brown, Dorsey P.;, Assignee: Bell Atlantic Network Services, Inc. (Arlington, VA) |
Method and apparatus for providing telephony services by switch-based processing of media streams
The present invention provides an improved media-control programming framework that is particularly well-suited for manipulation of media streams in the implementation of telephony services. In accord... Read More
Inventors: Carroll, Martin D.;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Method for handling incoming calls on a pots telephone line to a user's premises
According to the principles of this invention, a personal call manager on a user's premises solves the prior art limitations on handling telephone calls on a plain old telephone system (POTS) telephon... Read More
Inventors: McKendry, Martin S.; Styres, Karen L.; Reynolds, Randall F.; Langston, Jeffrey A.; Van Gundy, Scott A.;, Assignee: SoloPoint, Inc. (Los Gatos, CA) |
Apparatus and method for simultaneously transmitting biomedical data and human voice over conventional telephone lines
The invention is an apparatus for simultaneously transmitting biomedical readings and human voice over a conventional telephone line. The apparatus comprises one or more sensors, a cable, and a transm... Read More
Inventors: Kurth, Paul;, Assignee: |
Powerline carrier control system
According to the present invention, this problem is solved by means of an auxiliary decay circuit which continues to operate the powerline carrier control transmitter for a short time after the end of... Read More
Inventors: Tappeiner, Hermann; Paessler, Ernst-Robert; Smutny, Kurt; Krugel, Karl-Heinz;, Assignee: Siemens Aktiengesellschaft (Munich, DE) |
Signal detection circuit and telephone apparatus
Thus, an object of the present invention is to provide a telephone apparatus that allows a first user to use a caller ID service corresponding to a call-waiting signal and a signal detection circuit w... Read More
Inventors: Irie, Kenji; Nakamura, Yoshihiro;, Assignee: Sony Corporation (Tokyo, JP) |
Method and structure for detecting a customer premises equipment alerting signal
Accordingly, the present invention provides a method of determining whether a detected tone corresponds to a valid CAS tone. This method comprises the steps of (1) sampling a frequency of the detected... Read More
Inventors: Mathews, Michael T.;, Assignee: CIDCO Incorporated (Morgan Hill, CA) |
CAS tone disguising method and apparatus
Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbe... Read More
Inventors: Cardillo, IV, Raymond Anthony; Knight, Stephen D.;, Assignee: Nortel Networks Corporation (Ottawa, CA) |
Method and apparatus for detecting a telephone CPE alerting signal
The present invention provides method and apparatus for reliably detecting a CAS. By verifying that a detected CAS is a valid CAS, the present invention minimizes false detections and thereby avoids u... Read More
Inventors: Brady, Robert H.; Zielski, David; Nutter, William L.; Marra, Alexander J.;, Assignee: Cidco Incorporated (Morgan Hill, CA) |
Power line communication system using the neutral and ground conductors of a residential branch circuit
Referring to FIG. 1, a distribution transformer 10 is illustrated with its secondary center tapped to provide conventional 120/240 volt residential electrical service. Commonly connected with this tr... Read More
Inventors: Howell, Edward K.;, Assignee: General Electric Company (New York, NY) |
Network access pay telephone, conversion, and method
What is claimed is: 1. A network access pay telephone for accessing a digital communications network as well as for conventional voice communications, comprising: (a) a lower housing structure having ... Read More
Inventors: Ku, Li-Ta;, Assignee: |
Data transmission system utilizing power line
A principal object of the present invention is to provide a data transmission system utilizing a power line, wherein an attenuation amount of a transmission signal is substantially reduced even in the... Read More
Inventors: Fukagawa, Hitoshi; Suzuki, Yoshiharu; Komoda, Yoshiyuki;, Assignee: Matsushita Electric Works, Ltd. (Kadoma, JP) |
Noise inverter circuit for a power line communication system
A noise inverter circuit dynamically inverts the peaks of the signal waveform which includes noise such that the amplitude of the fundamental is equal to or less than the signal amplitude. A sudden in... Read More
Inventors: Howell, Edward K.;, Assignee: General Electric Company (Portsmouth, VA) |
Wireless power line communication apparatus
What I claim is: 1. Power line carrier communications apparatus, comprising: means for modulating a first carrier signal with a baseband message; means for amplifying said first modulated carrier sign... Read More
Inventors: Kennon, Jerry M.;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Apparatus and method for device control using a two conductor power line
What is claimed is: 1. Apparatus for transferring interrogation, control and response data on a DC power transmission line electrically coupling a controller apparatus and a plurality of remote device... Read More
Inventors: Johansson, Fritz H.;, Assignee: |
Distribution of line carrier communications
What is claimed: 1. Apparatus for coupling a high voltage power distribution system to a communications device, the system carrying electrical energy in the form of a high voltage at a power frequency... Read More
Inventors: Shuey, Kenneth C.;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Method for transmitting and receiving signals over transmission power lines
It is therefore an object of the present invention to provide a method for transmitting and receiving signals which ensures reliable communication even if the level and phase of transmission signal ch... Read More
Inventors: Takagi, Masatoshi;, Assignee: Osaki Electric Co., Ltd. (Tokyo, JP) |
Method of coupling lf signals by means of power line communications coupler
The present invention comprises an electrical coupler capable of being simply plugged into a 220 volt socket in a household. The coupler provides high frequency coupling between the power lines such t... Read More
Inventors: Dolin, Jr., Robert A.;, Assignee: Intel Corporation (Santa Clara, CA) |
Drive amplifier for power line communications
Accordingly, it is an object of the present invention to provide an improved power line communications amplifier circuit which provides a low output impedance in the transmission band during signal tr... Read More
Inventors: Sutterlin, Philip H.;, Assignee: Echelon Corporation (Palo Alto, CA) |
Reconstruction of signals using redundant channels
An improved method and apparatus is described for a power line communication system where binary signals are transmitted over power lines by modulation of a carrier frequency. The binary data is redun... Read More
Inventors: Sutterlin, Philip H.; Johnson, Howard W.; Lee, Chin-Chen; Hurlbut, Amy O.;, Assignee: Echelon Corporation (Palo Alto, CA) |
Ring Tones 
