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| Number | Title | Issue Date |
| 7440444 | IP telephone system, IP telephone apparatus and method for identifying destination user An IP telephone system includes a source IP telephone apparatus, a destination telephone apparatus, a Web server and an ENUM server. The IP telephone apparatuses are connected to an IP network. The Web server stores ring tone information corresponding to a telephone... | 10/21/2008 |
| 7366295 | Telephone signal generator and methods and devices using the same A method or device includes a telephone with an audio or video effects generator to produce audio or video effects that are transmitted as part of a signal from the telephone. ... | 04/29/2008 |
| 7340050 | Apparatus and method for controlling incoming melody In an apparatus and method for controlling an incoming melody, a receiver's telephone terminal allows a caller who transmits a call request signal to select a specific receiver with whom the caller wants to establish a voice call. The receiver's telephone terminal o... | 03/04/2008 |
| 7336777 | Method and apparatus for managing presenting and changing ring-back sounds in subscriber-based ring-back sound service Disclosed herein is a method and apparatus for managing ring-back sounds in a subscriber-based ring-back sound service. The method includes the first step of storing common ring-back sounds and reporting details of use of the common ring-back sounds, the second step... | 02/26/2008 |
| 7254408 | Apparatus and method for generating a calling tone of wire/wireless telephone In an apparatus and a method for processing a calling tone of a wire/wireless telephone, if an RF signal corresponding to a ring receiving generation control signal is transmitted to a portable device from a fixed device after a ring signal is received in the fixed ... | 08/07/2007 |
| 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 |
| 7206403 | Telephone terminal equipment interface circuit The object of the present invention is to remove the dead region of a diode bridge and maintain stable operations in a telephone terminal equipment interface circuit. In order to realize this object, a telephone terminal equipment interface circuit, according to the... | 04/17/2007 |
| 7099457 | Personal ring tone message indicator A system and method of message indicating that enable the sender of a message to chose the ringing tone of the receiver's cellular telephone upon arrival of the sender's message. The sender has the ability to either choose or create the ringing tone to be played on ... | 08/29/2006 |
| 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 |
| 7020271 | Ring control device A system and method that allows a ringer of a telephone to be silenced on demand without preventing outgoing calls to be placed. In an embodiment of the invention, there is a ring control device comprising a switch, a voltage control device in electrical series with... | 03/28/2006 |
| 7003089 | Splitter for analog telephone signal and digital data In a telephone system where frequency multiplexed analog telephone signals and digital data signals are transmitted over a line, incoming calls are announced to the customer installation by a ringing indication signal having an amplitude between 1 and 30 V RMS, whic... | 02/21/2006 |
| 6944284 | Pulsed volume control of a magnetic ringer A digital circuit for driving an audio transducer that provides consistent tonal quality over a range of volume levels, without requiring a variable gain analog amplifier. A fixed amplitude ringer tone is multiplied, or amplitude modulated, by a higher frequency dig... | 09/13/2005 |
| 6873705 | Combine audio and ringing mode A circuit where the same amplifiers and the same volume adjustment circuitry are used for the ringer mode as well as for the audio mode of a mobile phone is achieved. The volume adjustment in the audio and ringer mode is provided by a precise amplitude setting via t... | 03/29/2005 |
| 6751323 | Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception An electroacoustic transducer (1) includes a ringing signal generation means (20) for generating a ringing signal (CS) and an electroacoustic transducer (9) for the acoustic reproduction of the ringing signal (CS), in which the ringing signal ge... | 06/15/2004 |
| 6298132 | Ringing-tone control device for telephone set, using audio signal sent by caller In a ringing-tone control device for a telephone set, an audio signal which is sent from a communication opposite party is converted into a corresponding bi-level signal. The bi-level signal is stored into the memory. The bi-level signal is read out from ... | 10/02/2001 |
| 6289099 | Ringer for satellite user terminals An apparatus, system, method, and computer program product for providing a flexible ringer for multiple deskset phones. A controller detects a flag message that precedes an incoming telephone call, and selects one or more frequencies based on a local expe... | 09/11/2001 |
| 6246761 | Automatic volume control for a telephone ringer A telephone is provided with a means for automatically generating ringing tones to be heard by a user over ambient noise and in spite of any muffling environment in which the telephone may be located. The ambient noise is measured to determine its amplitu... | 06/12/2001 |
| 6167135 | Method and apparatus for generating a ringing signal In generating a ringing signal of predetermined frequency and shape between the A- and B-wires to a subscriber's station in a telephone network, the ringing signal is directly injected in or superposed on the DC-levels of the wires. A voltage difference c... | 12/26/2000 |
| 6134455 | Annunciating apparatus, and associated method, for radio communication device Annunciator apparatus, and an associated method, for a mobile station, such as a radio telephone operable in a cellular communication system. When a call is to be terminated at the mobile station, a determination is made of the ambient noise levels proxim... | 10/17/2000 |
| 6084960 | Power supply circuit using a constant current and telephone apparatus including such a circuit The present invention relates to a power supply circuit SC receiving a power supply current IS at an input voltage VLN and intended to supply a voltage VDD, comprising a capacitance CS, a first transistor T1 enabling the capacitance CS to be charged by means o... | 07/04/2000 |
| 5838788 | Telephone ringing signal generator A telephone ringing signal generator includes a DC converter for producing high positive and negative voltages that define peak amplitudes of the ringing signal, which is produced by low pass filtering a generally trapezoidal waveform having these peak am... | 11/17/1998 |
| 5790654 | Digitally controlled ring signal generator A space and power efficient digitally controlled, all solid state, DC to AC converter powered by low voltage DC, typically found in logic circuits, that generate a high voltage low frequency AC output with a low slew rate waveform, suitable for activation... | 08/04/1998 |
| 5673313 | Telephone set of distinctive ringing type wherein pattern of telephone number call signal is registered for determination of telephone number being called A telephone set using two or more telephone numbers called by respective call signals having different patterns, which are stored in a pattern data memory when the call signals are received and detected in a registering mode and with which the pattern of ... | 09/30/1997 |
| 5659607 | Telephone set A telephone set including a data obtaining device which obtains a plurality of sets of own-call-number data each set of which identifies a corresponding one of a plurality of different own call numbers allotted to the telephone set according to a common n... | 08/19/1997 |
| 5649007 | Telephone set of distinctive ringing type capable of generating different calling sounds after the telephone set is connected to remote calling party A telephone set of distinctive ringing type of a called party capable of generating calling sounds depending upon respective call signals of different patterns received from a remote calling party, including a pattern detector for detecting the pattern of... | 07/15/1997 |
| 5633917 | Remote-control telephone answering system and method A controller circuit enables remote control of conventional answering machines from any telephone coupled to the same telephone line to which the answering machine is coupled, and within the same dwelling (such a telephone herein sometimes called a "local... | 05/27/1997 |
| 5602911 | System and method for eliminating bell tap on analog telephones A system and method for modifying a composite Ring AC/Message Waiting (RAC/MW) signal to prevent bell tap on analog telephones. The composite RAC/MW signal comprises AC signals and DC signal alternately spaced in time. At a zero crossover point the compos... | 02/11/1997 |
| 5600713 | On-board ring signal generator A ring generator circuit that produces a ring output for a plurality of telephones simultaneously. The ring generator circuit includes a switch that receives an oscillating signal in response to an on condition of an on/off signal. The on/off signal is re... | 02/04/1997 |
| 5442695 | Ringer circuit A ringer circuit includes a rectifier unit receiving a calling alternating voltage and having first and second output terminals. An acoustic transducer has first and second terminals. A controllable first switch is connected between the first output termi... | 08/15/1995 |
| 5363438 | Selective ringing receiving device and method A selective ringing receiving circuit comprises a timing generating circuit for generating a timing signal for bit length comparison, a bit length comparison circuit for comparing, in terms of the timing signal, the respective bit lengths of `1` and `0` o... | 11/08/1994 |
| 5359598 | Voice server for digital communication network An interface for coupling a standard telephone set to a distributed digital network for allowing digital voice communication over the distributed network such that the utilization of the distributed network is wholly transparent to the user. An interface ... | 10/25/1994 |
| 5323456 | Digitally controlled ringer signal generation A method and apparatus, of producing an alarm or ringing signal by providing a first pulse signal having a predetermined pulse width to define an alarm or ringing signal amplitude, and modulating the pulse signal with a second pulse signal having a pulse ... | 06/21/1994 |
| 5303284 | Ringing circuit for use in portable telephone set A portable telephone set having a ringing circuit for producing different ringing tones depending upon the use mode of the portable telephone set, a portable mode or a mobile mode. The ringing circuit comprises a mode detecting circuit for detecting the u... | 04/12/1994 |
| 5253289 | Terminal connection device A terminal connection device changes and connects a plurality of terminals to one telephone line according to kinds of ringing signal sequences sent through the telephone line. The terminal connection device comprises switches connecting between the telep... | 10/12/1993 |
| 5127049 | Coded phone security system A telephone security device is placed in the telephone line between the primary transmission network and receiver. Incoming telephone calls are automatically answered and monitored for a predetermined time. When a proper code is supplied by the calling pa... | 06/30/1992 |
| 5005199 | Telephone interface circuit A line powered telephone interface circuit answers an incoming call and, responsive to a command tone, routes the call to a selected terminal. If no command tone is received within a predetermined time period, low voltage audio signalling devices located ... | 04/02/1991 |
| 4972466 | Digital composite tone alerting Within a digital PBX system or the like, an appartaus permits provision of digital composite tone alerting particularly suitable for piezoelectric transducers with one arbitrarily selectable tone, by means of logic circuits for latching the sign-bit in a ... | 11/20/1990 |
| 4856056 | Apparatus for timely controlling the sound characteristic of a signaling means of a voice communication device An apparatus is provided for programmably silencing a telephone ringer for one or more predetermined periods of time on a daily basis. In accordance with the time set by a user, the apparatus places the telephone ringer under the control of the data store... | 08/08/1989 |
| 4747133 | Telephone light adapter A telephone light adapter comprised of an electronic control box connected to a standard telephone and light fixture, the adapter energizing the light fixture when the control box is in an automatic mode for announcing an incoming telephone call, the ligh... | 05/24/1988 |
| 4723275 | Circuit arrangement for generating an acoustic ringing signal in a subscriber telephone set A subscriber telephone set which comprises a multifrequency dialing tone oscillator, a microprocessor connected thereto for controlling selection of the tones produced thereby, and an acoustic signal element for producing a ringing sound corresponding to ... | 02/02/1988 |
