Motorola Corporation

Surendra J Perera

Robert J Schwendeman

Lu Chang

Jian-Cheng Huang

Zaffer S Merchant

Deepak Ahya

Warren P Glotzbach

Yanchen Qi

A method is provided for authenticating a wireless device with a fixed station. A first authentication request is received from the wireless device when the wireless device detects that the fixed station is in close proximity, and a second authentication request is received from the fixed station when the fixed station detects that the wireless device is in close proximity. The first authentication request includes a first unique identifier for identifying the wireless device and a second unique identifier for identifying the fixed station, and the second authentication request includes the second unique identifier. The wireless device is authenticated with the fixed station based on whether the second unique identifier received in the first authentication request matches the second unique identifier received in the second authentication request, and also based on whether the first unique identifier received in the first authentication request is associated in an authentication database with the second unique identifier received in the second authentication request. Also provided is an authentication server for authenticating a wireless device with a fixed station.

System and method for authenticating wireless device with fixed station

An interactive method for composing an alphanumeric message by a caller using a telephone keypad includes storing (215) a lexical database (135) from which unigram probabilities, forward conditional probabilities, and backward conditional probabilities for a plurality of words can be recovered; storing a received sequence of key codes (405) representing a sequence in which keys on a telephone style keypad are keyed; generating a word trellis including candidate words (415) derived from the sequence and the lexical database; determining a most likely phrase (420) from the candidate words, the unigram probabilities, forward conditional probabilities, and backward conditional probabilities; generating a most likely message (425) from the most likely phrase and presenting the most likely message to the caller; and confirming that the most likely message is the alphanumeric message (430).

Alphanumeric message composing method using telephone keypad

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 handwritten information, a processor (20) for processing the handwritten information. The processor has an image thinner (206) for thinning each line of the handwritten information, a graph model former (208) for forming a graphical model of handwritten information, a graph model reducer (210) for simplifying the graphical model of the handwritten information into a model having a reduced number of segments corresponding to the lines of the handwritten information, and a stroke former (212) for organizing the line segments into as few strokes as possible to recover the handwritten information. A line segment encoder and formatter (214) further encodes the reduced information into relative vectors to further reduce the amount of data. The selective call communication system (10) also has a transmitter (30) for transmitting the handwritten information to at least one selective call receiver (40) capable of receiving facsimile information.

Encoded facsimile communication with a selective system and method

A compression/decompression method useful in communicating ideographic characters to communication devices. An ideographic character is represented by a compressed character codeword including information defining a structure type or layout of the character, together with primitive types that represent combinations of simple graphical elements. A character generator read-only memory (CGROM) (20) includes a compressed character codeword database (22) and a primitive type database (24). Character codes corresponding to a compressed character codeword are transmitted to a communication device (600), such as a selective call receiver. The communication device (600) includes a microprocessor/controller (50) that decompresses the compressed character codewords corresponding to the character codes based on the data stored in the character database (22) and the primitive type database (24).

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Lake Worth, FL, United States of America

Surendra J Perera