Abstract: A selective call receiver (130) for conserving power having a first battery saving period, has a receiver (504) for receiving and obtaining synchronization to selective call signals having a multiplicity of frames. A synchronizer (602, 604) determines a first occurrence of a preassigned frame (200) of the multiplicity of frames. The receiver (504) receives the preassigned frame (200), each of frame designating a system collapse value for selecting a second battery saving period, and a TD collapse bit (406) and a TD collapse value (408) for designating a third battery saving period. A decoder/controller (506) decodes the TD collapse bit (406), the TD collapse value (408) and the system collapse value transmitted in the selective call signals. The decoder/controller (506) calculates the third battery saving period from the TD collapse value (408) and a battery save selector (616) selects the third battery saving period designated by the TD collapse value (408) when the TD collapse bit (406) is set.

Abstract: A satellite communication system (100) includes a satellite (102) in a predefined orbit projecting a plurality of beams (1-48) designating a coverage area (115). The satellite (102) has a communication device (200), a frequency synthesizer (222) for setting a frequency of the communication device for communicating via a beam of the plurality of beams (1-48) and a controller (216) coupled to the frequency synthesizer (222) for compensating for a Doppler frequency shift associated with the beam.

Abstract: A two-way selective call receiving device is responsive to the receipt of a message with an identifier falling within a limited set of possible identifiers in order to control the ability of the selective call receiving device to transmit a response to a prior message having the same identifier. The selective call receiving device utilizes a tracking table that stores information tracking received messages with their associated identifiers. A controller determines whether a prior message having the same identifier as a newly received message is stored in the device and for which a response has not already been transmitted. If so, the controller prevents a response to the prior message from thereafter being transmitted.

Abstract: A selective call system (100) having at least two base sites (120, 122, 124) for communicating with a plurality of selective call receivers (108) wherein at least one of the plurality of selective call receivers having acknowledge-back capability. A base site (110, 122, 114) has a base site transmitter (210) for communicating with a selective call receiver (108) and a base site receiver (214) for receiving an acknowledge-back signal from the selective call receiver (108). The selective call receiver (108) has a receiver (304) for receiving a signal from the base site (110, 122, 114), a decoder/controller (306) coupled to the receiver (304) for decoding the signal received from the base site transmitter (210), a status indicator(504) coupled to the decoder/controller (306) for indicating a predetermined status of a power supply for the selective call receiver (108).

Abstract: A battery charger adapter (100) has a housing receptacle (102) formed as a battery for a cellular telephone. The housing receptacle (102) has a recessed portion (104) formed in a base surface (106) of the housing receptacle (102) for receiving a battery pack (200) to be charged, at least one holding clip (108, 110) for securing the battery pack (200) in the recessed portion (104), an electrical coupler (112) for coupling the battery pack (200) to the housing receptacle (102) and an access port (114), coupled to the electrical coupler (112), for electrically coupling the housing receptacle (102) to a charger for enabling the battery pack (200) to be charged in the battery charger adapter (100).

Abstract: A selective call communication system (10) receives hand written information from a facsimile machine (14) to be delivered to a plurality of selective call receivers (40). The selective call receiver (40) is capable of receiving facsimile information and has a receiver (24) for receiving the hand written information, a processor (20) for processing the hand written information. The processor has an image thinner (206) for thinning each line of the hand written information, a line segment locator (208) for locating the lines of the hand written information having end points, a line segment extractor (210) for extracting the lines of the hand written information and defining the lines of the hand written information as line segments, and a line segment organizer (212) for organizing the line segments to recover the hand written information.

Abstract: A selective call receiving device (14) and method allows a user of the device to mark or identify a message as a priority message. A message identified as a priority is stored in a priority message list (52) for comparison to a message that is subsequently received by the device (14) to determine whether the received message is a priority message or not. If a controller (28) of the device (14) determines that a received message is a priority, then the controller (28) generates a priority response such as an audible and/or tactile alert.

Abstract: A processing system (500) addresses an electronic display (100) comprising picture elements (pixels) (108) controlled by a plurality of first and second electrodes (106, 104). The plurality of first electrodes (106) are controlled by a plurality of periodic first drive signals (400) having a predetermined number of time slots independent of data being displayed. The plurality of second electrodes (104) are controlled by a plurality of second drive signals responsive of the data being displayed. The processing system (500) comprises calculating engine (610, 612) calculating from data being received the plurality of second drive signals for one of the plurality of second electrodes (104) for a time slot of the predetermined number of time slots.

Abstract: A selective call communication system (100), such as a paging system (100), and a method therefor, for using a lexicon (134) for voice data entry in the selective call communication system (100) is shown. The system (100) associates a Voice User ID (206) to a subscriber ID (202) for one or more subscribers of the system (100). The system (100) accumulates user system statistics (208). Then, based on the accumulated user system statistics (208), the system (100) defines a lexicon (134) to include at least one Voice User ID (206) for the one or more subscribers for voice data entry for the system (100).

Abstract: A selective call receiving device (10) includes a signal decoder that utilizes both a peak and valley routine and a stochastic gradient feedback route for processing a received signal. The peak and valley routine is operable prior to the detection of a predetermined synchronization word in the received signal to detect the peak and valley of a received signal and to generated based on detected peak and valley, a DC offset correction value for correcting the received signal prior to symbol decoding. A number of threshold values are also generated based on the detected peak and valley of the signal for use by a symbol decoder (77). The symbol decoder (77) utilizes the threshold values for decoding a signal into symbols. The symbol decoder (77) also generates a feedback error that is used after the detection of the predetermined synchronization word for updating the DC correction value and for generating a gain correction value.

Abstract: A selective call receiver (10) comprising a processor (108) that couples to a receiver circuit (102), a baud rate detector (106) and a memory device (110). The processor (108) activates the baud rate detector (106) that includes a plurality of registers to perform two baud rate detections to confirm a selective call signal before further processing. When a first baud rate detection detects the selective call signal, the processor (108) combines the results of this first baud rate detection and a plurality of predetermined baud rate parameters to provide a second plurality of predetermined baud rate parameters. The processor (108) then activates the baud rate detector (106) to perform a second baud rate detection using the second plurality of predetermined baud rate parameters. Based on the results of the second baud rate detection, the processor (108) determines whether to continue processing the selective call signal.

Abstract: A transceiver (10) includes a dual port phase and magnitude balanced synthesizer modulator (60). The modulator (60) couples a modulation input to a voltage controlled oscillator (40) and to a reference oscillator (42) that are coupled together in a phase locked loop (44). The modulator 60 includes a magnitude balancing circuit (64) that divides a modulation input representing data or the like into a first modulation input signal applied to the reference oscillator (42) and a second modulation input signal for the voltage controlled oscillator (40). A phase balancing circuit (68) induces a negative phase shift in the second modulation input signal that is coupled to the voltage controlled oscillator (40) in order to compensate for the phase lag of the reference oscillator loop (44).

Abstract: A communication system has a base station having memory for storing information within a plurality of information files relating to a plurality of information services. A receiver receives an information service request for requesting information within at least one of the plurality of information files from a selective call receiver. A transmitter transmits the information requested from within the at least one information service file to the selective call receiver. The selective call receiver includes a generator for generating the information service request and a transmitter transmitting the information service request. The selective call receiver receives the information transmitted from the base station in response to the information service request and a display displays the received information.

Abstract: A communication system (100) for reallocating frame assignments of a receiver (140). A message receiver (108) receives messages designating the receiver (140) and a transmitter (120) transmits a signal to the plurality of receivers (140). The signal has a plurality of frames (200), each has a frame identifier (402), an owner identifier (404), a frame lending offset (406) and a frame borrowing offset (408). A queue controller (132) measures a parameter indicating a traffic on each frame (200) to determine a lending threshold and a borrowing threshold. A processor (109) identifies a frame (603) with traffic below the lending threshold and another frame (605) with traffic exceeding the borrowing threshold and calculates the frame lending and borrowing offsets. A message formatter (114) encodes the frame identifier (402), the owner identifier (404), the frame lending and borrowing offset (406, 408) in the signal and a message allocator (134) distributes the messages.

Abstract: A selective call receiver (40) includes a receiver (66) for receiving information represented as a bitmap image. The selective call receiver 40 further includes a segmenter (206), coupled to the receiver (66), for segmenting the bitmap image into a text region and a non text region. A subtracter (208) of the selective call receiver (40), coupled to the segmenter (206), subtracts the non text region from the bitmap image and an identifier (210), coupled to the subtracter (208), identifies text lines within the text region of the bitmap image. The selective call receiver (40) also includes a formatter (212), coupled to the identifier (210), for formatting the text lines of the bitmap image; and a display (90), coupled to the formatter (212), for displaying the text lines being formatted.

Abstract: A radio communication system (1600) capable of communicating on at least two radio frequencies has a receiver (202, 206) which receives information addressed to at least one of a plurality of radio receivers (106) on a first radio frequency. A transmitter (104) transmits the information having a control signal therewith to at least one of the plurality of radio receivers (106) on the first radio frequency. A generator (102) generates the control signal for temporarily directing one or more of the plurality of radio receivers to a second radio frequency to receive address and message information. The radio receiver (106) has a receiver (804) which receives information on the first frequency, the information includes the control signal for temporarily directing the radio receiver (106) to the second radio frequency.