Matches 1 - 28 out of 28
Match Document Document Title
7217943 Film scanner  
A film scanner is configured with a broadband irradiation source and a film carrier. The film carrier has at least one light passage for a visible spectral channel, and the light passage is...
EP1587297A1 Film scanner  
The device (1) has a broadband radiation source (2) and a film platform (6), whereby the film platform has at least one light passage (10) for a visible spectral channel and the light passage is...
6788917 Timing systems and methods for forward link diversity in satellite radiotelephone systems  
Downlink signal bursts are transmitted from a plurality of visible satellites to a plurality of user terminals in a downlink region that is serviced by the plurality of visible satellites. A first...
6452948 Method for baud-clock phase synchronization in a TDMA digital communications system and apparatus therefor  
A time division multiple access digital communications system ( 12 ) is provided. The system ( 12 ) has a base station ( 14 ) configured to generate a receive baud clock ( 86 ) and has a receiver (...
6084863 Method and system for controlling a radio communication repeater  
A radio communication system and the method thereof which can eliminate influence of atmospheric interference or an interference signal having a strong signal level and which can allow repeater...
6021119 Multiple site interactive response system  
An interactive response system includes a central control host system and one or more wireless remote systems geographically separated from the host system and interconnected with the host system...
5923649 Layer 2 protocol in a cellular communication system  
A method for transmitting messages using an efficient communications link protocol over an air interface of a cellular communications system is disclosed. A frame in the protocol is divided into a...
5724357 Remote response system and data transfer protocol  
A wireless remote response system includes a base unit which retrieves user-entered responses from a plurality of remote response units, each of which is provided to a user. The base unit transmits...
5659545 Apparatus for mobile unit acquisition in a satellite communication system and method therefor  
To obtain service from a satellite communication system, a mobile subscriber unit must acquire a TDMA communication channel. Because the satellites move with respect to the surface of the earth,...
RE35449 Remote 2-way transmission audience polling and response system  
A remote response system includes a central control unit and a plurality of remotely-located response units each having keypads for entering a selection from a user. The central control unit...
5479410 Measuring signal strengths of adjacent base stations in a TDMA radio system for a possible handover  
A method for operating a TDMA system and measuring adjacent base stations in a TDMA radio system in which dummy time slots are inserted into a TDMA signal sent by a base station. These dummy time...
5367524 Method for sequential data transmission  
Sequential data transmission by a plurality of communication units may be achieved in a communication system by using an accurate external clock and transmitting at predetermined time intervals or...
5309439 TDMA system with a virtual reference  
A TDMA system operates without the requirement for a reference burst. A station in the TDMA system monitors the bursts from other stations to determine the virtual reference. The virtual reference...
5295140 Method for multi-purpose utilization of resources in a communication system  
A communication resource is subdivided as a function of time into a plurality of time slots (210), which may then be further subdivided on a non-periodic basis into a number of sub-slots (220). In...
5278833 Method for providing reserved communication access using multiple random access resources  
A communication resource is subdivided as a function of time into a plurality of time slots (210). These time slots are further subdivided on a non-periodic basis into a least two random access...
5093786 Remote response system  
A remote response system includes a central control unit and a plurality of remotely-located response units each having keypads for entering a selection from a user. The central control unit...
4943985 Frame synchronization device for a synchronous digital bit stream divided into blocks by means of a block code and structured in frames  
A frame synchronization device for a synchronous digital bit stream divided into blocks by means of a block code and structured in frames comprises a frame alignment word configuration recognition...
4930125 Multiplexer frame synchronization technique  
Methods for quickly determining loss of synchronization and for quickly reestablishing synchronization of a sub-aggregate frame having primary and secondary frames and contained within an...
4754450 TDM communication system for efficient spectrum utilization  
A time division multiplexed (TDM) communication system is disclosed, which apportions radio frequency communication channels into at least two time slots. Voice signals for transmission on this...
4742514 Method and apparatus for controlling a TDM communication device  
A time division multiplexed (TDM) communication device controller is disclosed, which controls all signalling, synchronization and supervisory functions. In one embodiment, the invention operates...
4696057 CN ratio measurement circuit  
In a time division multiple access communication system including a nonlinear signal processing element, an accurate carrier power-to-noise ratio is obtained by the circuit of the present...
4607376 Digital radio relay system  
A radio relay system for a fully-digitalized transmission network is disclosed. In the system, a received auxiliary signal can be by-passed from receiver to transmitter via a switching circuit...
4577316 Synchronization system for a regenerative subtransponder satellite communication system  
A satellite communications system has a number of earth stations sharing an uplink carrier in a time division multiple access mode. One of the earth stations is designated as the master station for...
4392132 Wireless signaling system  
A wireless signaling between one or more remote locations and a central location includes a transmitter at each remote location and switches for providing signals indicating status information on...
4346470 Initial acquisition of synchronization for a station in a TDMA satellite communication network  
A method and apparatus are disclosed for acquiring transmit synchronization at a secondary station with the periodic frame reference bursts from a reference station in a TDMA network in an improved...
EP0042623A1 Satellite communication system for switching formats with reference to super-frame time slots.  
Abstract not available for EP0042623 Abstract of corresponding document: US4398291 On carrying out communication among a plurality of earth stations by the use of a satellite, super-frame time...
4252999 Signaling and ranging technique for a TDMA satellite communication system  
The present invention relates to a technique for creating dedicated in-band, two-way, signaling channels between a master signaling ground station and each remote ground station of a satellite...
4218654 Space diversity system in TDMA communication system  
A space diversity system in a TDMA communication system employing a communication satellite, in which in order to equalize the path lengths of respective sending paths at the start of...
Matches 1 - 28 out of 28