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| Number | Title | Issue Date |
| 7418265 | System and method for interrupt control on a handheld device An interrupt message is sent over one of a plurality of transport mediums from a first mobile device to a second mobile device. The interrupt message may include a first mobile device identifier associated with a transport medium that is independent of the plurality... | 08/26/2008 |
| 7257199 | Telephony based remote location monitoring A method, system, and program for telephony based remote location monitoring are provided. A telephone network receives the caller request to listen only to a remote location telephony device. The telephone network allocates a listen only channel between the caller ... | 08/14/2007 |
| 7177410 | Local control of call features in a telephone system A residential phone system allows for local control of call features from any phone extension. The phone system may include a microcontroller that communicates along the phone lines at a non-utilized frequency to several extension phones in a residence. The microcon... | 02/13/2007 |
| 7109860 | Surveillance apparatus integrated with mobile phone The present invention is to provide a surveillance apparatus for monitoring the situation of a visitor through a mobile phone, which comprises a monitor assembly including a microprocessor, a digital/analog converter connected to the microprocessor, an electric bell... | 09/19/2006 |
| 7039019 | Telephone exchanging apparatus and telephone system A telephone exchanging apparatus 30 comprises a joined terminal table 341, a joined terminal table operating portion 352, and a reception side designating portion 355. The joined terminal table 341 stores terminal identification in... | 05/02/2006 |
| 7027499 | Detection and correction circuit for blind equalization convergence errors An apparatus processes an equalizer output signal. The equalizer output signal is formed by transmitting an alternate mark inversion input signal over a channel and passing the transmitted signal through an adaptive equalizer. The apparatus includes a correlator cir... | 04/11/2006 |
| 6910447 | Pet communication apparatus A pet communication apparatus for allowing a user to communicate with a pet. The pet communication apparatus includes a housing member being designed for being selectively positioned on a support surface. A processing assembly is positioned in the housing member. Th... | 06/28/2005 |
| 6882715 | Method and apparatus for communication with a gate entry controller and providing secure communication A security system and method is disclosed for use with a security gate entry system that uses a telephone or other communication system at a security gate for communication by a person seeking entry into the secure area with a residence or other unit in the secure a... | 04/19/2005 |
| 6760419 | Method and apparatus for interfacing a drive-thru intercom system with a telephone system A method and system for interconnecting a telephone system and an intercom system. In one exemplary embodiment, telephone switchgear is connected to a telephone interface which provides separate voice transmit and receive channels. For example, an E&M tie line modul... | 07/06/2004 |
| 6721408 | Method and apparatus for recording or forwarding messages A system and method provide the capability for a visitor to a home or business to leave an audio message for the occupants if they are not present. Outside the home or building, an interface may be provided which is proximate to a doorbell which a visitor may employ... | 04/13/2004 |
| 6631179 | Voice and motion activated telephone A method and system for communicating without use of manual contact with a communications unit. The user approaches a communications system and can activate a communications unit by a proximity/motion detector and/or a voice activation device. The person ... | 10/07/2003 |
| 6539084 | Intercom system A method of establishing a private audio communication channel on an intercom system (100) having a plurality of intercom units (101-1 to 101-n), is diclosed. The intercom system 100 is activated by spoken request data input via at least one of the interc... | 03/25/2003 |
| 6476902 | Liquid crystal display and method of making same A liquid crystal display and method of making same has a first transparent substrate bondable to a second transparent substrate. The second transparent substrate has a plurality of vias passing through opposing active surfaces of the second transparent su... | 11/05/2002 |
| 6438221 | Electronote wall mounted messaging device A wall-hung or shelf situated free-standing voice memorandum system allows an individual to record a message for another member of the household. the system can be used in connection with a household doorbell system so that at the user's choice, the syste... | 08/20/2002 |
| 6310940 | Personal computer interactive phone system A telephone system for providing advanced telephony includes a first phone system adapter and a phone system controller. The first phone system adapter is coupled between a first telephone handset and a telephone line. Furthermore, the first phone system ... | 10/30/2001 |
| 6233328 | Door intercom An automatic door answering system comprises a door intercom system, a recording machine, a telecommunication system, first, second and third interfaces, and a microprocessor-based switching device. The switching device is coupled to the door intercom sys... | 05/15/2001 |
| 5838784 | One-touch dialing apparatus and method for registering dialing numbers in a telephone system A one-touch dial apparatus and method for registering dialing numbers in a telephone system includes a memory module divided into a plurality of memory blocks, each memory block having a number of memory locations, wherein each of the memory blocks is arr... | 11/17/1998 |
| 5832077 | Microphone/loudspeaker having a speakerphone mode and a microphone/loudspeaker mode A microphone/loudspeaker includes a microphone arrangement and a loudspeaker such that the microphone/loudspeaker operates in a quiescent mode and shifts to a speakerphone mode in response to detecting a battery voltage on a telephone line. In the quiesce... | 11/03/1998 |
| 5825868 | Arrangement for providing private-network line features on central-office-to-PBX trunks A telephone central office switch (103) provides Centrex features, including intercom dialing, on central-office-to-PBX (133, 134) trunks (123, 124) by using the 4-wire subscriber feature of the Lucent Technologies 5ESS.RTM. switch to administer trunk por... | 10/20/1998 |
| 5748722 | Collective-house control system employing an interface circuit for alternative mark inversion control communication A collective-house control system is provided which employs an interface circuit for alternative mark inversion (AMI) communication. The interface circuit has a data detecting unit, a controlling unit, and an AMI signal generating unit. The data detecting... | 05/05/1998 |
| 5644630 | Intercom system for a service establishment An intercom system (110) for a drive-in restaurant (102) is integrated with a point of sale system (118) through a computer (126) that provides for tracking and managing intercom calls to operators taking orders. The computer indicates to point of sale sy... | 07/01/1997 |
| 5596631 | Station controller for distributed single line PABX A telephone station instrument add-on control subsystem with selectable addressing and ringing response delay techniques enhances any conventional instrument by providing added functionalities to ordinary telephone subscribers. When one or more of this en... | 01/21/1997 |
| 5283825 | Telephone adaptor for telephone sets A telephone adaptor unit for a telephone set connectible, with other like telephone adaptor units for other telephone sets, between the respective telephone set and a common telephone line, includes a first switching device effective, when an off-hook con... | 02/01/1994 |
| 5267306 | Telephone apparatus with conditional operation A dial controllable conditionally operative device which is directly connectable to the ring and tip lines of a subscriber loop. "On-hook" coupling is provided to allow the device to provide the conditional operation of one or more of the functional capab... | 11/30/1993 |
| 5202917 | Telephone calling method and telephone apparatus A person to whom a telephone call is directed is called at an extension either by voice only or by voice during each silent period of an audible ringing signal. A plurality of telephone sets are provided where each telephone set includes a receiver for re... | 04/13/1993 |
| 5127045 | Identifying telephone controller system An identifying telephone controller system using a main computer component with a central processing unit coupled to an in-house AC wiring system and utilizing a plug-in ringer/appliance controller receive and a base-remote telephone system to provide mul... | 06/30/1992 |
| 5090052 | Telephone system with multiple extension telephones An improved telephone system in which a plurality of telephone units connected to a common telephone line is directly connected to an outside telephone line. Each telephone unit contains complete capability for making outside calls, for making extension c... | 02/18/1992 |
| 5031210 | Telephone apparatus A telephone with an inter communicating facility is disclosed. The telephone has: a condition storage unit for storing operation condition data; an operation process unit for, when the operation of a hold key is detected, making the condition storage mean... | 07/09/1991 |
| 5027341 | Station line switching control system A station controller for use in a telephone system includes a plurality of digital telephone stations comprising one or more multi-station pick up groups, each having a primary station and one or more associated secondary stations for picking up calls to ... | 06/25/1991 |
| 5027391 | Call management system A call management system connected locally between a central office telephone company switching station (CO) and a conventional single telephone line having multiple extensions provides call paging and intercom capabilities between the multiple telephone ... | 06/25/1991 |
| 4998274 | ISDN dual bus extension phone system Several ISDN telephone terminals in a passive bus configuration are enabled to be used to share a single voice communication in the familiar extension phone arrangement by means of a second bus connecting the analog sides of the terminal circuits. Once an... | 03/05/1991 |
| 4996709 | Intercom telephone An intercom system for use in combination with a multi-line telephone system wherein the intercom system utilizes the same wire pair for communications between intercom units that is used for normal telephone communications. The intercom system transmits ... | 02/26/1991 |
| 4943997 | Device for communicating a doorside intercom set with a remote telephone A device is disclosed for communicating a doorside intercom set of an intercom system with a selected forwarding telephone, having a microprocessor and an input for inputting the telephone number of the selected remote telephone. To detect the state of th... | 07/24/1990 |
| 4868847 | Telephone intercom device A telephone intercom device is provided for use in a telephone system. The telephone system includes a plurality of telephones interconnected to one another via first and second pairs of conductors, the first pair of conductors also being coupled to an ex... | 09/19/1989 |
| 4794640 | Switching control apparatus for intercom-telephone sets A switching control apparatus for intercom-telephone sets includes a switching control circuit and a surge protection circuit electrically coupled with a talking circuit for increasing the reliability of the intercom-telephone operation, reducing the cost... | 12/27/1988 |
| 4769837 | Device for adding intercom functions to a phone system A device for adding intercom functions to a residential or small business phone system uses existing telephone equipment and wiring. The device attaches to the incoming telephone line to switch telephone calls and generate user coded ringing signals. The ... | 09/06/1988 |
| 4754476 | Premises page/intercom system utilizing telephone set component A premises in which a plurality of telephone sets (10, 12) are used is provided with dedicated intercom wiring (1, 6) having its own power source. Each telephone set (10, 12) includes standard telephone circuitry (20), for communicating off premises, and ... | 06/28/1988 |
| 4734932 | Telephone local intercom system Full duplex local intercom circuit arrangements are provided for telephone station instruments within a local network. Each instrument includes an FM receiver and an FM transmitter. If two subscriber telephone paths are provided, switches are also provide... | 03/29/1988 |
| 4731821 | Single wire telephone intercommunication system A residential digital logic circuit telephone system is provided for internal voice communications and digital interfaces control which enables two or more conventional twelve button touch-tone telephone devices to be used as a voice intercommunication sy... | 03/15/1988 |
| 4706244 | Frequency multiplexed telephone system A frequency multiplexed system for coupling a plurality of individual telephone sets to at least one subscriber telephone line. The system includes a line adapter unit for controlling use of subscriber lines and for assigning the use of frequency bands to... | 11/10/1987 |
