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| Number | Title | Issue Date |
| 5670951 | Radio communication device and method for generating threshold levels in a radio communication device for receiving four-level signals A symbol detector (110) includes an analog-to-digital converter (115) for converting signal voltages to digital values and peak and valley counters (310, 315) for tracking the digital values to determine peak and valley values associated with high and low... | 09/23/1997 |
| 5657357 | Method and apparatus for providing duplicate messages in a radio communication system A communication system (100) for providing duplicate messages includes a plurality of receivers for receiving a radio signal, the plurality of receivers including time diversity (110) and non-time diversity receivers (115). A message transmission device (... | 08/12/1997 |
| 5596589 | Method and apparatus for encoding and decoding error correction codes in a radio communication system A communication device (140) for receiving and decoding a codeword of predetermined length, wherein the codeword includes information and parity bits, comprises a memory (315) for storing the codeword in the form of segments, wherein each segment comprise... | 01/21/1997 |
| 5487100 | Electronic mail message delivery system An electronic mail message delivery system (100) includes an electronic mail network (113) for delivering electronic mail messages from originating devices to destination devices, the electronic mail messages including network addresses (212) for identify... | 01/23/1996 |
| 5438696 | Method and apparatus for controlling radio frequency interference generated by a voltage multiplier A radio communication device (100) having a receiver (110) for receiving a radio frequency (RF) signal includes first and second batteries (140, 175) for generating first and second voltages, respectively, wherein the second voltage is greater than the fi... | 08/01/1995 |
| 5436599 | Method and apparatus for digital modulation using pulse addition An apparatus for generating output signals having predetermined frequency shifts relative to a frequency provided by a reference signal is included in a system (500) comprising a phase-locked loop (206) coupled to the reference signal for generating the f... | 07/25/1995 |
| 5432839 | Method and apparatus for forwarding selective call messages received in a first selective call service to a second selective call service A method, in a repeater (155) having receiving circuitry (310, 315) for selectively receiving and decoding a selective call message transmitted by a first selective call service (105) and further coupled to a telephone network (135), for forwarding receiv... | 07/11/1995 |
| 5430439 | Selective call receiver having user defined message information in memory and presentation methods thereof A user of a selective call receiver (100) is capable of inputting and storing user defined search key information and user defined corresponding information into non-volatile memory (107), via user input control (109). Subsequent to receiving and decoding... | 07/04/1995 |
| 5426653 | Method and apparatus for performing error correction on a signal received by a radio communication device A radio communication device (100) receives a radio frequency (RF) signal comprising at least first, second, and third words which include message information and error correction information, wherein the second and third words are redundant words associa... | 06/20/1995 |
| 5426422 | Method and apparatus for quick access to selected updated information in a selective call receiver A selective call receiver (30) receives personal messages and information services provided database messages. A memory (44) stores the personal messages in a first portion (46) and the database messages as a plurality of screens in a second portion (48).... | 06/20/1995 |
| 5425056 | Method and apparatus for generating threshold levels in a radio communication device for receiving four-level signals A symbol detector (110) for generating data symbols from a received signal having multiple signal voltages comprises an analog-to-digital converter (115) for converting the multiple signal voltages to digital values and peak and valley counters (310, 315)... | 06/13/1995 |
| 5418528 | Method and apparatus for prioritizing deletion of received messages based on message source and message order A radio receiver (110) for receiving messages from a plurality of sources includes a message database (252) for storing the messages and sources from which the messages originate and a processing unit (220) for determining whether each source has a status... | 05/23/1995 |
| 5414598 | Light wedge for distributing light across a display device A light wedge (300) formed from light conducting material comprises a first surface (308) for receiving light rays from a light emitting source (515), the first surface (308) having a first axial length, and a second surface (310) substantially opposite t... | 05/09/1995 |
| 5398023 | Selective call receiver with flip-out display A selective call receiver (10) includes a display (22) for presenting received information signals. The display (22) is pivotally attached to the selective call receiver's housing (24) so that the display [means] (22) may be pivoted outwardly from the hou... | 03/14/1995 |
| 5396537 | Reliable message delivery system A method and apparatus for reliably delivering messages (200) from a central terminal (102) to a communication receiver (130) in a communication system (100), such as an electronic mail system. The central terminal (102) transmits messages (1300) to the c... | 03/07/1995 |
| 5396522 | Method and apparatus for clock synchronization with information received by a radio receiver A radio receiver (100) for receiving a radio frequency signal includes a receiver (110) for generating from the received signal a data signal having alternating first and second edges and a clock (135) for generating a clock signal having a clock period. ... | 03/07/1995 |
| 5394441 | Method and apparatus for digitally tracking highs and lows of a signal received by a radio communication device A method for tracking a received signal comprises the steps of setting (635) a counter (130) to a first value indicative of a first signal voltage, determining a center threshold of the received signal, and determining a number of center transitions of th... | 02/28/1995 |
| 5392455 | Transducer with integrated switch element A data communication receiver (100) for receiving a radio frequency (RF) signal includes receiving circuitry (410) for receiving the RF signal and recovering a selective call message therefrom and for generating an activation signal in response to recover... | 02/21/1995 |
| 5381447 | Code division multiple access messaging system for providing seed information based on times of inbound messages A base station (15) for receiving and processing a spread spectrum signal includes a memory (520) for storing the spread spectrum signal and a processor (525) coupled to the memory (520) for processing the spread spectrum signal to decode information incl... | 01/10/1995 |
| 5376913 | Variable resistor utilizing an elastomeric actuator A variable resistor (102) for varying a resistance between first and second terminals (145, 150) includes a substrate (200) having formed thereon a resistor network (205) for providing the resistance, wherein the resistor network (205) is electrically cou... | 12/27/1994 |
| 5369846 | Molded-in locking pin for belt clip and lanyard An apparatus is adapted for attaching to an article, wherein the apparatus comprises a housing (500) having a molded locking feature (510) substantially adjacent to a guide (550). A clip is mounted on the main housing (500), wherein the clip (508) further... | 12/06/1994 |
