Matches 101 - 150 out of 191 < 1 2 3 4 >
Match Document Document Title
6073030 Use of RSSI indication for improved data transmission over amps network  
A method of using control channel information is provided to enhance data throughput of a cellular communication system. The cellular communication system includes a single system control unit...
6073014 Method and system for dynamic group radio using existing telephony infrastructure  
A group radio system (10) uses a group radio controller (230) to connect and manage remote units (20-100) through a wireline switched telephony network. The group radio controller receives voice or...
6044486 Method and device for majority vote optimization over wireless communication channels  
A method and device for error-correcting a plurality of bits transmitted over RF channels in a cellular communication system are provided. The present invention applies principles of majority...
6038223 Access scheme for packet data in a digital cellular communication system  
A new access scheme for a digital radio network for providing packet data access to mobile stations operating within said network. A random access channel (ACH) is provided for control signaling...
EP0981254A2 Handoff method selection in a CDMA mobile communication system  
A selection method of a handoff system in a CDMA radio data communication system, which is capable of selecting one of a hard handoff system and a soft handoff system depending on situations of a...
6028892 Voice band-based data transmission system  
A radiotelephone system provides a voice channel for carrying voice signals between a mobile unit and a called or calling unit. A first modem in the mobile unit and a second modem connected to a...
6026193 Video steganography  
An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The...
5999808 Wireless gaming method  
A method for seamlessly transmitting application specific messages over cellular radio system control channels and switches, for use in wireless gaming and wagering, including the steps of:...
5946629 Cellular telephone network having short message service interaction with other networks  
A method and apparatus for facilitating inter-network message communications within the framework of a cellular telecommunications network. The message center of the cellular network includes...
5930377 Method for image encoding  
A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the possible image, the signature...
5915216 Apparatus and method of transmitting and receiving information in a wireless telecommunications system  
A wireless telecommunications system (1) includes a central terminal (10) for transmitting and receiving radio frequency signals to and from a subscriber terminal (20). A downlink communication...
5909648 Network interface and method for providing complete reception of data  
A network interface terminates communication between a disconnecting party (i.e., requesting a disconnect from the network interface) and a disconnected party in communication with the...
5901351 Method and apparatus for detection of fraudulent users in a communication system using signaling-channel phase shift  
A method and apparatus for fraud detection is provided in which a remote unit within a communication system (100) transmits a Digital Supervisory Audio Tone (DSAT) at a transmission rate with a...
5887254 Methods and apparatus for updating the software of a mobile terminal using the air interface  
A wireless user terminal (10), such as a cellular telephone, includes a transceiver (14, 16) for conducting bidirectional RF communications with a communications network (32) and a data processor...
5878209 Apparatus and method for identifying a failed subscriber unit in a wireless communication system  
An apparatus and method provides identification of a failed subscriber unit (102) in a wireless communication system (100). In a first embodiment, the subscriber unit (102) performs a self test to...
5862260 Methods for surveying dissemination of proprietary empirical data  
An automated system checks networked computers, such as computers on the internet, for watermarked audio, video, or image data. A report listing the location of such audio, video or image data is...
5850481 Steganographic system  
An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be...
5845203 Remote access application messaging wireless method  
A method for seamlessly transmitting application specific messages over cellular radio system control channels and switches, including the steps of: transmitting application specific messaging...
5841978 Network linking method using steganographically embedded data objects  
A given data object can effectively contain both a graphical representation to a network user and embedded information, such as the URL address of another network node, thereby to permit the object...
5841886 Security system for photographic identification  
Security of photographic identification documents is enhanced by embedding within the photographic image encoded information that may be correlated to other information pertaining to the individual...
5832119 Methods for controlling systems using control signals embedded in empirical data  
An embedded multi-bit signal is steganographically detected from empirical data, such as image or audio data, and some aspect of a related system's operation is controlled in accordance therewith....
5822436 Photographic products and methods employing embedded information  
Technology is now available permitting consumers to make amateur-or even professional-grade copies of photographs. For wedding and portrait photographers, in particular, the business of making...
5809160 Method for encoding auxiliary data within a source signal  
A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature...
5802483 Method and apparatus for transmission of data and voice  
A modem-controller for auto switching and controlling the transmission and receiving of voice and error-free transmission of standard data signals, fax data signals and voice communications over...
5793843 Method and apparatus for transmission of data and voice  
A modem-controller for auto switching and controlling the transmission and receiving of voice and error-free transmission of standard data signals, fax data signals and voice communications over...
5771467 Mobile terminal which halts and restarts data transmission based on bit error rate independently of any instruction signal from a base station  
A cellular radio telephone system which halts transmission and reception of a data message in the event of detection of degradation of the circuit quality regardless of whether or not a hand-over...
5768426 Graphics processing system employing embedded code signals  
An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be...
5748783 Method and apparatus for robust information coding  
A digital signal is imperceptibly embedded into an input source signal, such as an image or video signal, to produce an encoded (sometimes termed "watermarked") signal. The principle of...
5748763 Image steganography system featuring perceptually adaptive and globally scalable signal embedding  
An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The...
5745604 Identification/authentication system using robust, distributed coding  
An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be...
5742640 Method and apparatus to improve PSTN access to wireless subscribers using a low bit rate system  
A method of cellular communication among a subscriber unit, a base station and a switch controller is provided which comprises the steps of digitally encoding speech signals at the subscriber unit;...
5737706 Power system supporting CDPD operation  
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available...
5721762 Shared base stations for voice and data cellular telecommunications and method  
The present invention provides a system and method for using the brief time intervals between cellular telephone calls on a primary cellular network to transmit and receive data over a second...
5711004 Method for minimizing message interruptions during hand-off in a multi-site radio  
A multi-site communication system (100) includes a plurality of communication units (106, 107) roaming among communication sites (108-111). The communication sites (108-111) are controlled by a...
5710834 Method and apparatus responsive to a code signal conveyed through a graphic image  
An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be...
EP0818116A1 CONDUCTING HANDOFF OF A DATA TRANSMISSION  
Abstract not available for EP0818116 Abstract of corresponding document: US5873035 During a wireless communication of data in which modems (21, 24) are in use, a method of handing off the...
5701465 Method and apparatus for reserving system resources to assure quality of service  
A method for providing files to a remote node including the steps of determining whether bandwidth is available for transmitting across a communications link a file requested by a remote node,...
5701329 Standby power savings with cumulative party check in mobile phones  
A power saving standby mode that can be used in mobile radio stations operating in current networks and improves in the intended message reception. The invention enters the power down mode...
5701297 Data over cellular  
There is provided a mechanism for providing data services over a wireless cellular network. It comprises: establishing communications over the cellular network; upon a subscriber designating that...
5682602 Method and apparatus for decreasing modem retraining due to blank and burst signalling in analog cellular systems  
Modem throughput across a cellular mobile telephone network is increased by controlling the response of the modem to blank and burst orders. In the case of a power control order, the modem may be...
5682417 Power saving mobile data communication system using adaptors  
In a cellular mobile communication system, a first adaptor is connected to a data terminal to convert the output of the modem of the data terminal to a baseband data signal, and determines the...
5640444 Methods and apparatus for controlling data transmission using radio devices  
A system for connecting a computer to both cellular and landline telephone systems is disclosed. A cellular modem has a single RJ-11 jack for interfacing either to a landline jack or to a signal...
5636292 Steganography methods employing embedded calibration data  
An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be...
5612991 Use of RSSI indication for improved data transmission over amps network  
A method of using control channel information is provided to enhance data throughput of a cellular communication system. The cellular communication system includes a single system control unit...
5603087 Interference detection technique  
Briefly described, the present invention is a circuit for detecting and indicating a level of interference on a high frequency angular modulated signal. This circuit includes a logarithmic...
5581703 Method and apparatus for reserving system resources to assure quality of service  
A method for providing files to a remote node including the steps of determining whether bandwidth is available for transmitting across a communications link a file requested by a remote node,...
5568513 Standby power savings with cumulative parity check in mobile phones  
A power saving standby mode that can be used in mobile radio stations operating in current networks and improves in the intended message reception. The invention enters the power down mode...
5566225 Wireless data communications system for detecting a disabled condition and simulating a functioning mode in response to detection  
A system is arranged to a) monitor the flow of data communicated within a session between a mobile end-user device and a host via a connection which includes a wireless link established over a...
5561844 Minimization of facsimile data loss during cellular handover  
A method is disclosed of reducing data loss during cellular handoff of a mobile among base sites by detecting an end-of-line signal by a fax adapter (13a or 106a) from the transmitting fax,...
5544222 Cellular digtial packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
Matches 101 - 150 out of 191 < 1 2 3 4 >