Abstract: The invention is a method and apparatus for compression of binary data. The signal is used before modulation to increase the effective transmission rate by compressing it prior to being encoded onto a magnetic tape or other storage media. The transition bits of the data have a bit period no smaller than the smallest bit period without increasing the maximum frequency. However, non-transition bits have a bit period smaller than that of the transitioning bits. Since there is at least one full bit period between any two transitions, the maximum frequency is unaffected and is used for synchronization. Noise in a transmission is masked using bit period information, and since no other transition can be valid until at least the transition bit period has passed, noise occurring before passage of the transition bit period does not result in an error.

Abstract: The invention is a method and apparatus for compression of binary data. The signal is used before modulation to increase the effective transmission rate by compressing it prior to being encoded onto a magnetic tape or other storage media. The transition bits of the data have a bit period no smaller than the smallest bit period without increasing the maximum frequency. However, non-transition bits have a bit period smaller than that of the transitioning bits. Since there is at least one full bit period between any two transitions, the maximum frequency is unaffected and is used for synchronization. Noise in a transmission is masked using bit period information, and since no other transition can be valid until at least the transition bit period has passed, noise occurring before passage of the transition bit period does not result in an error.

Abstract: Embodiments of the present invention are directed to a method and apparatus for compression of binary data. In one embodiment of the present invention, a modulated signal is compressed. In one embodiment, data is transmitted using an FM signal that is compressed without increasing the maximum frequency. In one embodiment, transition bits have a bit period no smaller than the smallest bit period possible without increasing the maximum frequency. However, non-transition bits have a bit period smaller than that of the transitioning bits. In one embodiment, a header sequence known to the receiving system is transmitted and used to synchronize the receiving system. In one embodiment, the header sequence contains a series of transition bits to assist in synchronization. In yet another embodiment, the header contains a non-transition bit to determine the non-transition bit period. In another embodiment, binary data is compressed before being stored in a storage device.

Abstract: A method of intelligent dynamic frequency reuse includes transmitting a first signal on a selected frequency with a first one of a plurality of fixed stations, the signal being directed to a first one of a plurality of mobile cellular phone users, receiving a second signal for transmission to a second one of the plurality of mobile cellular phone system users at a second one of the fixed stations, transmissions from the second fixed station on the selected frequency being capable of interfering with reception of transmissions from the first fixed station by the first one of the plurality of mobile cellular phone users, determining whether transmission of the second signal on the selected frequency from the second fixed location would interfere with reception of the first first signal by the first one of the plurality of mobile cellular phone users, and transmitting the second signal from the second one of the fixed stations on the selected frequency when the transmission will not interfere with simultaneous r

Abstract: An apparatus and system for decoding colliding data transmissions utilizing an at will transmission protocol is disclosed. An apparatus for decoding an analog signal includes an input terminal, a data bus, a first decoder connected to the input terminal and data bus, configured to receive an analog signal, decode the signal into a first message and output the message to the data bus, a second decoder connected to the input terminal and data bus and configured to receive an analog signal, determine whether the analog signal includes a second message, decode the signal into a second message and out put the message to the data bus. A microprocessor operatively connected to the first and second decoders directs the second decoder to search for a colliding second transmission immediately after the first decoder has begun to decode a first transmission. If colliding second signal captures the receiver as the first transmission is decoded, the second decoder decodes and outputs the second message intact.

Abstract: A diversity reception system for use in narrow-band radio frequency communication systems includes a plurality of receivers that each generate a detected signal from a received radio frequency signal. The diversity reception system switches between receivers to output a high quality audio signal. The system selects a receiver having the highest quality reception at any given time by using a detected signal having the highest relative signal-to-noise ratio when the detected signals have less than a preselected threshold signal-to-noise ratio and a detected signal having the highest relative signal strength when one or more of the receivers is generating a detected signal having a signal-to-noise ratio at or above the preselected threshold signal-to-noise ratio.