Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 7957523 | Method and system for implementing a ring back tone based on group mobile switchboard service This invention discloses a method and system of implementing a ring back tone based on a group mobile switchboard service. The method includes: a home service control point of the group mobile switchboard obtaining an identification of an extension subscriber which ... | 06/07/2011 |
| 7940922 | Telephone interface circuit A telephone interface circuit comprising a speech circuit, a control circuit turning on upon receiving a supply of a forward direction trigger current so as to connect first and second telephone lines and the speech circuit, and going off upon receiving a supply of ... | 05/10/2011 |
| 7869588 | System and method for providing particularized audible alerts A system and method of generating at least two distinctive auditory alerts upon receiving a transmission or telephone call at a device is described. Data indicative of a first plurality of sounds corresponding to a user of a device configured to receive the transmis... | 01/11/2011 |
| 7839995 | Change to playback characteristic of ringback tone A playback characteristic of a ringback tone, played to a calling communication device employed by a user for a call to a called communication device, is changed based on input from the user of the calling communication device. ... | 11/23/2010 |
| 7792282 | Ringing for power system management A network device has at least two communication ports to allow the device to communicate with at least two telephony devices. The device has a ring manager to determine if any of the communication ports are silent ports ready to transition from silent to ringing, de... | 09/07/2010 |
| 7339924 | Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS) A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP)... | 03/04/2008 |
| 7333604 | Adaptive notification of an incoming call in a mobile phone A device and method for handling announcement of an incoming call in a telephone handset at least in part in accordance with a measured ambient noise level is provided. In some embodiments, the disclosed device includes an audio signaling mechanism such as a ringer ... | 02/19/2008 |
| 7325029 | Methods for enabling e-commerce voice communication Methods for operating multimedia computers to provide e-commerce voice communication capability directly between any computer connected to a computer network such as the Internet and any telephone device connected to the PSTN are disclosed. A simple click and call m... | 01/29/2008 |
| 7324331 | System and method for providing and receiving electric power through telephone wire-pairs Converter modules for providing and receiving electric power through a single telephone wire-pair and related systems and methods. In one embodiment, a converter module for providing electric power to a single telephone wire-pair includes: (1) a DC/DC boost converte... | 01/29/2008 |
| 7260210 | Unbalanced slic with a built-in ring circuit A method and apparatus is provided for implementing an unbalanced subscriber line interface circuit with built-in ring circuit. A signal to be conditioned is received. An unbalanced output buffering function is performed upon the signal to be conditioned using an un... | 08/21/2007 |
| 7257222 | Ring voltage generation circuit and method for generating a ring voltage The present invention relates to a ring voltage generation circuit for generating a ring voltage (VTR) between a TIP lead (9) and a RING lead (10) with minimized power loss for electronic subscriber circuits, comprising: a) an amplifier circuit ... | 08/14/2007 |
| 7251321 | Crescendo telephone ringer Crescendo telephone ringers and methods of providing a crescendo telephone ring signal. The crescendo telephone ringer provides a gradual increase in audible ringing volume as a sequence of incoming electrical ring signals is detected. According to one embodiment, u... | 07/31/2007 |
| 7239695 | Method and apparatus for detecting line card threshold A method and apparatus is provided. The method includes transmitting a signal having an AC component to a subscriber line and receiving at least a portion of the transmitted signal from the subscriber line. The method includes determining at least a portion of a per... | 07/03/2007 |
| 7239697 | Supply power transition control A variable power supply is controlled to supply power at approximately a first supply level for an electronic device. The variable power supply is controlled to control a transition of the power from approximately the first supply level toward a second supply level ... | 07/03/2007 |
| 7212840 | Cellular phone and incoming call reception informing method Incoming call tones and program numbers as numbers used to specify respective incoming call tones are stored in a memory of a cellular phone so as to be set in correspondence to each other. The program numbers are used to specify corresponding incoming call tone mel... | 05/01/2007 |
| 7197134 | DTMF generating assistant A DTMF generating device for automatically generating DTMF tones corresponding to a predefined phone number comprises a processor, a memory, and a speaker enveloped in a credit card sized casing. The memory has stored therein DTMF tone samples corresponding to the p... | 03/27/2007 |
| 7188053 | Method, computer program, and system for automated real-time signal analysis for detection, quantification, and prediction of signal changes A method, computer program, and system for real-time signal analysis providing characterization of temporally-evolving densities and distributions of signal features of arbitrary-type signals in a moving time window by tracking output of order statistic filters (als... | 03/06/2007 |
| 7181002 | Method and apparatus for a single power supply for dual power mode A method and apparatus is provided for using a single power supply in a dual mode fashion. A ringing signal is received. A waveform power supply signal based upon the ringing signal. An unbalanced output buffering function upon the signal to be conditioned using an ... | 02/20/2007 |
| 7181004 | Direct drive for a subscriber line differential ringing signal having a DC offset A method of generating a subscriber line differential ringing signal with a DC component includes providing a time-varying supply level, W(t), having a plurality of non-equidistantly spaced critical points along a folding line. W(t) is coupled to the tip line while ... | 02/20/2007 |
| 7181003 | Direct drive for a subscriber line differential ringing signal A method of generating a subscriber line ringing signal includes the step of applying a time-varying waveform W(t) to the tip line while maintaining the ring line at a pre-determined supply level for a duration T/2. The time-varying waveform is subsequently applied ... | 02/20/2007 |
| 7181005 | Telephone interface circuit An interface circuit that interconnects a terminal device at an extension station with the adjunct port circuit of a telephone of a business communications system (BCS), such as a digital PBX. The interface circuit enables a call diverted to a BCS telephone to be an... | 02/20/2007 |
| 7161931 | Voice and data exchange over a packet based network A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 01/09/2007 |
| RE39406 | Telephone line coupler The telephone line coupler circuit has a single transmit opto-coupler whose output includes a DC bias component connected to a gate of a line seize switch for connecting a DC line seize load across the ring and tip contacts of the telephone line. The line seize swit... | 11/21/2006 |
| 7130335 | Multi-line ADSL modem A multi-line ADSL modem (12) and network (10) whereby the multi-line ADSL modem (12) has connections to several ADSL modems (14) at a central office (CO) (16) through a master loop (18), shared loops (20, 22), and/or ... | 10/31/2006 |
| RE39231 | Communication terminal equipment and call incoming control method In a communication terminal equipment and in a method of controlling call incoming, unnecessary noises in a period from the start of an alert sound to carrying out of the next operation can be reduced. When a predetermined operation is effected under the condition t... | 08/08/2006 |
| 7085371 | Push-button signal receiving device and a gain control method A push-button signal receiving device and a gain control method whereby error in validity determination of a received signal that accompanies the insertion of an AGC circuit can be prevented. An input bush-button signal is amplified by amplifying circuit and separat... | 08/01/2006 |
| 7082143 | Voice and data exchange over a packet based network with DTMF A method and system for detecting a dual tone in a composite signal having first and second components including means for separating the composite signal into its first and second components, means for estimating power of the separated first and second components, ... | 07/25/2006 |
| 7079026 | Method and apparatus of karaoke storage on a wireless communications device A wireless communications device that alerts a user to a predetermined event includes a transceiver, a speaker, memory, and a controller. First and second pre-recorded audio files are stored in the memory, and may be, for example, pre-recorded music and the user's p... | 07/18/2006 |
| 7067731 | Sound source circuit and telephone terminal using same A sound source circuit is provided for a telephone terminal to reproduce chorus-effect imparted musical tones as incoming call sound or hold sound. Herein, original musical tone data ω c1 are slightly modified in pitches to produce musical tone data ω c2... | 06/27/2006 |
| 7068777 | True DTMF dialer A circular dial buffer is implemented in appropriate random access memory (RAM) accessible by a DSP for the purpose of storing DTMF digits to be generated and output on, e.g., a telephone line. To the processor, the DSP appears to behave much like an off-the-shelf s... | 06/27/2006 |
| 7050836 | System and method for providing multimedia messaging service (MMS) ringing images on mobile calls System, apparatus and method for providing multimedia messaging service (MMS) ringing images on mobile calls. In one embodiment, a ringing image comprises a combination of sound and images/video with optional textual information and a presentation format. An exempla... | 05/23/2006 |
| 7046797 | Telephone system with controllable ringing voltage A telephone system includes a controllable ringing generator for generating a ringing signal and an interface for providing a ringing voltage derived from that signal on the transmission line. The controllable ringing generator includes a control device for controll... | 05/16/2006 |
| 7046053 | Total harmonic distortion standard Embodiments of the invention provide a method and an apparatus for generating a total harmonic distortion reference signal. A triangle wave having a predetermined frequency and a predetermined amplitude is generated. The triangle wave is filtered to produce a signal... | 05/16/2006 |
| 7042740 | Soft-switching half-bridge inverter power supply system An inverter power supply system includes a half-bridge inverter circuit which includes a first switching element, a second switching element, a first auxiliary capacitor and a second auxiliary capacitor for converting a DC voltage from a DC power supply circuit to a... | 05/09/2006 |
| 7043012 | Method and apparatus for ring again feature for a telephone system A method and apparatus for an automatic ring again feature on a telephone set for a user that answers a telephone call not intended for that user is disclosed. If a user has answered an incoming telephone call not intended for that user, a “Ring Again” feature o... | 05/09/2006 |
| 7042996 | Method and apparatus for cas-based ring limiting of FXS ports A method and apparatus for call-limiting one or more candidate calls received by a router is disclosed. The method and apparatus may be configured to determine whether ringing one or more candidate calls will exceed a predetermined power limit. If ringing the calls ... | 05/09/2006 |
| 7039044 | Method and apparatus for early detection of DTMF signals in voice transmissions over an IP network A method and apparatus for early detection of in-band DTMF signals in voice transmissions over an IP network are disclosed. Using a digital signal processor, whenever any indication of signals possibly corresponding to the signals characteristic of DTMF tones are de... | 05/02/2006 |
| 7031465 | Network interface device and method A network interface device includes a first interface operable to receive at least two incoming calls over a subscriber line, and a second interface operable to facilitate communication between the first interface and a first telephone line and between the first int... | 04/18/2006 |
| 7031464 | Ring relay control unit for foreign exchange station The ring relay control unit of an FXS includes a main control unit for controlling relay interrupt command; a relay control device for generating a relay control signal in accordance with a relay interrupt command transferred from the main control unit, an SLIC for ... | 04/18/2006 |
| 7019588 | Method to dynamically control the quiescent current of an operational amplifier arrangement and operational amplifier arrangement performing this method A method for controlling the quiescent output current of an operational amplifier arrangement by tuning offset voltages of a stage preceding a differential output driver stage. The cut-off frequency of the filter formed by the input capacitors of the differential ou... | 03/28/2006 |
