Abstract:
A transmitter, having controllable transmission functions is described for transmitting coded message signals to a plurality of portable communications receivers, the coded message signals including and message information interleaved with transmitter control signals synchornized with the message information. The transmitter includes a receiving section for receiving the coded message signals from an input source for transmission. A decoder which couples to the receiving section decodes the synchronized transmitter control signals to derive transmission control signals. A transmitter section, responsive to the transmission control signals, transmits the coded message signals. Additional transmission control signals may also be derived from one or more receiver control signals embedded in the coded message signals.
Abstract:
A selective call receiver (106) receives one or more message packets of a transmitted fragmented message, where each of the one or more message packets includes an address (1605) and message data (1610), and the message data (1610) includes an indication (1702) of whether more message packets are to be received for the fragmented message. The selective call receiver (106) receives an address of each message packet, and then correlates (2908) the address to one or more predetermined addresses. After a successful correlation (2908), the selective call receiver (106) decodes the message data (1610) of each message packet, and then successively stores (2928, 2936, 2942) the decoded message data (1610) to reconstruct the fragmented message. The selective call receiver (106) determines that the fragmented message is completely reconstructed after detection (2918) in the decoded message data (1610) an indication (1702) that no more message packets are to be received for the fragmented message.
Abstract:
A selective call receiver (106) receives one or more message packets of a transmitted fragmented message, where each of the one or more message packets includes an address (1605) and message data (1610), and the message data (1610) includes an indication (1702) of whether more message packets are to be received for the fragmented message. The selective call receiver (106) receives an address of each message packet, and then correlates (2908) the address to one or more predetermined addresses. After a successful correlation (2908), the selective call receiver (106) decodes the message data (1610) of each message packet, and then successively stores (2928, 2936, 2942) the decoded message data (1610) to reconstruct the fragmented message. The selective call receiver (106) determines that the fragmented message is completely reconstructed after detection (2918) in the decoded message data (1610) an indication (1702) that no more message packets are to be received for the fragmented message.
Abstract:
A selective call receiver (106) receives one or more message packets of a transmitted fragmented message, where each of the one or more message packets includes an address (1605) and message data (1610), and the message data (1610) includes an indication (1702) of whether more message packets are to be received for the fragmented message. The selective call receiver (106) receives an address of each message packet, and then correlates (2908) the address to one or more predetermined addresses. After a successful correlation (2908), the selective call receiver (106) decodes the message data (1610) of each message packet, and then successively stores (2928, 2936, 2942) the decoded message data (1610) to reconstruct the fragmented message. The selective call receiver (106) determines that the fragmented message is completely reconstructed after detection (2918) in the decoded message data (1610) an indication (1702) that no more message packets are to be received for the fragmented message.
Abstract:
A communication system (100) provides minimum transmission delay for message delivery to communication transceivers (510) includes a plurality of transmission cells (102, 104) which include one or more receivers (512) and a transmitter (506) and which define geographical transmission areas. The transmitter (506) transmits an address identifying the communication transceiver (510) for which a message is intended and a color code signal identifying the transmitter (506) during a first scheduled transmission time interval (212). At least one receiver (512) located within the transmission cells (102, 104) receives an acknowledgment signal including the address and color code signal generated by the communication transceiver (510) during a second scheduled transmission time interval (216). The transmitter (506) identified by the color code signal transmits the address and message during a transmission frame (110) designated by the color code signal during which time the address and message are received by the communication transceiver (510).
Abstract:
Network roaming information (NRI), which identifies a network (200) and a service area (210) within the network (200), a receiver address, is transmitted in a network (200) during a predetermined number of time slots of a signal, whereby the signal is transmitted in consecutive cycles, each cycle comprising a plurality of consecutive time slots. The placement of the NRI in the transmitted signal is made to be predicted by a receiver so that the receiver can compute an expected time slot location of an NRI to be compared with a stored NRI. The placement of the NRI is made according to an algebraic relationship between modulo N of the transmission frequency of the signal, modulo N of the order of the cycle, and modulo N of a portion of the NRI, wherein N is an integer.
Abstract:
A selective call receiver (106) receives one or more message packets of a transmitted fragmented message, where each of the one or more message packets includes an address (1605) and message data (1610), and the message data (1610) includes an indication (1702) of whether more message packets are to be received for the fragmented message. The selective call receiver (106) receives an address of each message packet, and then correlates (2908) the address to one or more predetermined addresses. After a successful correlation (2908), the selective call receiver (106) decodes the message data (1610) of each message packet, and then successively stores (2928, 2936, 2942) the decoded message data (1610) to reconstruct the fragmented message. The selective call receiver (106) determines that the fragmented message is completely reconstructed after detection (2918) in the decoded message data (1610) an indication (1702) that no more message packets are to be received for the fragmented message.
Abstract:
A system controller (102) is for generating a compressed facsimile message in a radio communications system (100). The system controller (102) includes an image memory (203) for storing an optical image, means for image analysis (205), means for best scan angle identification (204), an image rotator (220), and a facsimile encoder (225). The means for image analysis (205) generates a long line analysis of a portion of the stored optical image using a scan angle. The means for best scan angle identification (204) identifies a best scan angle from one or more image analyses generated by the image analysis means (205). The image rotator (220) generates an aligned optical image by using the stored optical image and the best scan angle. The facsimile encoder (225) generates the compressed facsimile message from the aligned optical image.