Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 6961567 | Generic activation and registration framework for wireless devices A system and a method are provided for managing network activation with a carrier and registration with a service provider. In one example, the method determines a network activation status. If the network is not activated, a utility is used to perform the activatio... | 11/01/2005 |
| 6321098 | System and method for the recording and processing of information in a wireless communication device A wireless communication device provides streamlined access to recording functions that allow a user to readily record information from a called directory information service provider or other predetermined number. Directory service provider numbers and o... | 11/20/2001 |
| 5966436 | Redialing method A redialing method in a communication apparatus provides that the digits of a telephone number are consecutively input by a user, and the actual time intervals between the consecutive inputs are measured and stored in memory along with the digits of the t... | 10/12/1999 |
| 5805693 | Monitor-controlling device A monitor-controlling device is disclosed. The monitor-controlling device, used for a system having a monitor and a first circuit, includes a buffer for storing data from the system; a decoder electrically connected to the buffer for receiving and decodin... | 09/08/1998 |
| 5761286 | Method for enabling communications between calling an called multmedia terminals Communications across a network (16) between a calling multimedia terminal (10) and at least one called multimedia terminal (12) is readily facilitated by assigning each terminal an endpoint identifier that establishes its communications path requirements... | 06/02/1998 |
| 5745892 | Switching system with OAM processor capable of automatically updating directory translation data base In a telephone switching system, a directory translation data base is created in a read/write memory, a call handling processor makes a search through the data base for reading routing data to establish a connection in a switching network. A copy of the d... | 04/28/1998 |
| 5732133 | System and method for selecting and generating telephone access numbers for limiting access to a telephone service A system and method for selecting and generating telephone access numbers for limiting access to a telephone service. The system includes an auto-dialer having a system clock, a memory device, a processor, and a tone generator. The auto-dialer is used to ... | 03/24/1998 |
| 5579387 | Apparatus for accessing function code in telephone An apparatus adapted to be activated by an input device for accessing a function code in a telephone comprises a first memory for storing a function code, a second memory electrically connected to the first memory for storing a datum corresponding to the ... | 11/26/1996 |
| 5577111 | Camp-on communication managing method and apparatus In an exchange system which performs a communication based on personal identification information for identifying respective subscribers, the invention has an object of providing a system which can flexibly accommodate a change of the communication termin... | 11/19/1996 |
| 5519771 | Called subscriber selecting system A system for selecting a called subscriber is provided in a telephone switching network for selecting a called subscriber from a plurality of called subscribers who desire to be selected and has a memory for registering identifying information on called s... | 05/21/1996 |
| 5513258 | Method and apparatus for processing call number information for a switching system The controller of the switching system has a switching-oriented program that has two program parts allocated to it. A first program part is designed for processing call number information that has a first plurality of call number digit information. The se... | 04/30/1996 |
| 5425096 | Communication device A circuit for generating dial pulses and a circuit for forming the direct current loop of a line have conventionally been made up of relays and a coil. In the present invention, these circuits are made up of components, such as capacitors and a semiconduc... | 06/13/1995 |
| 5347512 | Telecommunication system with delay data buffer and method A telecommunication system (10) having a multiport receiving switch (12) with a central control circuit (14) for distributing information received over a multichannel link (28) from a multiport sending switch (30) to at least one of a plurality of various... | 09/13/1994 |
| 5339356 | Virtual private network connecting system A virtual private network connecting system in a virtual private network is formed by accommodating in a public network a plurality of PBX units each assigned a unique private office number (ON), the system executed by the units comprising in each of the ... | 08/16/1994 |
| 4719413 | RF crosspoint tester An apparatus for testing the crosspoints of an RF switching matrix injects a test signal having the characteristics of noise into the matrix. The test signal recovered from the matrix is mixed with a frequency-swept signal and the difference signal is app... | 01/12/1988 |
| 4674111 | Method and apparatus for automatic dialing in mobile radio telephone systems A mobile telephone and method of dialing in which telephone numbers are stored in immediately adjacent memory locations and in which dialing is automatically and timely accomplished in a plurality of signalling formats.... | 06/16/1987 |
| 4605824 | Circuit arrangement for telecommunication exchange systems, particularly telephone exchange systems with switch facilities for emitting signals A telecommunication exchange system has a plurality of switch facilities over which signals are emitted on an average only during a part of their respective occupation. A signal current source for emission of the signals is provided having a call-handling... | 08/12/1986 |
| 4592045 | Circuit for the subscriber termination in an integrated services digital network A circuit for the subscriber termination in an integrated services digital network (ISDN) to which a number of individual terminals are connected by respective S-interfaces, or by S-interface busses respectively combining a number of terminals into a comm... | 05/27/1986 |
| 4580012 | Electronic audio communications system with automatic user access features An advanced electronic telecommunications system is provided for the deposit, storage and delivery of audio messages to both subscribers and non-subscribers with limited access provided to the non-subscriber under the control of the subscriber. A Voice Me... | 04/01/1986 |
| 4451702 | Arrangement of interactive telephone switching processors for performing timing analyses of port events A common control for a community office (C.O.) switching system includes two interactive processors. A call control processor comprises the uppermost element in the control hierarchy and is a stored program processor that controls call progression, marks ... | 05/29/1984 |
| 4440986 | Microprocessor controller for simultaneously controlling a PBX and providing multiple user access for general purpose data processing A microprocessor controller has a central processor, including a microprocessor, to centrally control a PBX and also provide general processor capability to a plurality of data terminals. Any typical centrally controlled PBX design which processes and swi... | 04/03/1984 |
| 4393461 | Communications subsystem having a self-latching data monitor and storage device A communications subsystem having a microprocessor coupled to an address bus and a data bus includes a latching register also coupled to the address bus and the data bus. The latching register is responsive to signals from the data bus and address bus for... | 07/12/1983 |
| 4363936 | Telephone network including common equipment with message information and control information circuits for connecting to stations having multifunction telephones A private telephone network that includes multifunction telephones. Multifunction telephones are connected to common equipment by a voice signal path and a data signal path. Supervisory information passes over the data signal path in the form of polled me... | 12/14/1982 |
| 4296281 | Static, solid state originating register compatible with an electromechanical telephone cross-bar switching system A static, solid-state originating register for use with an electromechanical telephone cross-bar switching system (e.g. an NE-5* switching system by Northern Telecom) is disclosed. The static, solid-state originating register comprises a plurality of stat... | 10/20/1981 |
| 4257119 | PCM switching system for wide and narrow band signals A common control telecommunications switching system capable of efficiently handling both narrow band and wide band information. The system uses a hybrid digital network having a time division section for switching narrow band signals and a space division... | 03/17/1981 |
| 4245214 | Switching matrix A non-blocking switching network which has considerably fewer crosspoint switches than would otherwise be expected. The network is comprised of a primary stage having n inputs and m outputs, a plurality of secondary stages each having m inputs and p1... | 01/13/1981 |
| 4215246 | Dial pulse signaling arrangement A telecommunication system including a rotary dial subscriber set for transmitting sequences of dial pulses to a telephone central office over at least two conductors is disclosed. In response to a first set of dialed digits, the central office establishe... | 07/29/1980 |
| 4211895 | Electronic telephone system with time division multiplexed signalling An electronic telephone system has a plurality of extensions connected radially to a central equipment by respective cables each providing separate speech and signalling paths. Each of the signalling paths is provided by a balanced conductor pair terminat... | 07/08/1980 |
| 4186278 | End-of-keying control circuit A TOUCH-TONE signal to dial pulse converter arrangement isdisclosed in a step-by-step system. The arrangement is equipped with a plurality of trunk circuits interposed between line finder and selector switches for extending calls from TT (TOUCH-TONE) tele... | 01/29/1980 |
| 4160130 | Essential user bypass circuit for telephone switching system An essential user bypass circuit for use in switch units of a telephone switching system. Telephone subscribers at each switch unit are able to communicate with each other and with subscribers at other switch units via associated subscriber apparatus and ... | 07/03/1979 |
| 4151375 | System for selectively shifting groups of bits for temporary storage in a processor memory of a telephone exchange In order to improve the utilization of a memory in an electronic processor of a telephone exchange, serving for the temporary storage of one or more 4-bit groups (referred to as quartets) in zones of 16-bit capacity, a concentration unit in the input of a... | 04/24/1979 |
| 4113989 | Electronic telephone system featuring switching networks having thyristors for single-wire switching An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, ... | 09/12/1978 |
| 4105875 | Electronic telephone switching system comprising a speech-path switching matrix and tone-connecting matrix and employing electronic crosspoint switching devices An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuit, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, a... | 08/08/1978 |
| 4105872 | Electronic telephone system including interexchange trunk repeaters for traffic with other systems An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, ... | 08/08/1978 |
| 4105871 | Electronic telephone system featuring a customer memory within a central control unit connected by bus lines An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, ... | 08/08/1978 |
| 4105873 | Electronic telephone switching system comprising a speech path switching matrix and tone-connecting switching matrix and employing electronic crosspoint switches An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, ... | 08/08/1978 |
| 4105874 | Centrally controlled electronic telephone system having a customer memory for storing information on two or more different subscriber stations and peripheral equipment-specific information An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, ... | 08/08/1978 |
| 4105876 | Electronic telephone system featuring periodic scanning of all peripheral units and polling of specific peripheral units for transmission of status and/or instruction information An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, ... | 08/08/1978 |
| 4095054 | Electronic telephone switching system of the stored program type comprising two active stages and one passive stage Improved electronic program-controlled switching system intended to be used in connection with automatic telephone switching. The system comprises a common control equipment responsible solely for information processing and comprising at least one program... | 06/13/1978 |
| 4087645 | Telephone switching system A telephone switching system utilizing matrices composed of monolithic chips which include a plurality of cross points and controls therefor. The lines and trunks attached to the unique matrices include unique circuitry, such as two-way amplifiers, which ... | 05/02/1978 |
