Abstract:
Register-modelled radio system comprising a plurality of register-modelled processors having the addressable registers (240) for modelling the virtual state of the processor; a serial bus (230) interconnecting the register-modelled processors for communicating between the addressable registers; and a communications protocol (310) for passing said information to or from said addressable registers (240), whereby the virtual state of said radio portion may be determined or altered by, respectively, communicating information from or to said addressable register means (240). The communications protocol (310) further comprises information packet having an address, an operation code, optional data, and an error detection device, such as a cyclical redundancy check packet. The operation code is chosen from the group of primitive operations codes reset, read, write, bit set, bit clear; ackowledge, and negative acknowledge.
Abstract:
A digital voice storage mobile control terminal (38-42) adapted for use in multiple unit land mobile radio (22) communications system (20-42). The mobile control terminal utilizes up to eight 64 K dynamic RAMs (76) to store (306) up to 42 seconds of speech comprising up to eight separate messages as well as a CVSD encoder-decoder (62, 304 & 434) to digitize speech messages.
Abstract:
A receiver (100), transmitter (200) and transceiver (400) in accordance with the present invention overcome the disadvantages of applying adaptive antenna array technology to multi-channel communication systems. Multi-channel radio frequency (RF) signals received via an adaptive antenna array (102) are converted from an analog form to a digital form prior to splitting and processing to recover communication channels contained therein. A number of digital communication signals are digitally combined into a multi-channel digital signal and converted from the digital form to an analog radio frequency form prior to transmission from the adaptive antenna array.
Abstract:
To program a communication device (14) to respond to voice commands (16, 32, 34), an individual desiring to operate the communication device sends a message (38) to a repository of voice recognition codebooks. The repository device(s) respond by transmitting the codebook of that individual to at least one communication device, which stores the codebook therein (26). Thereafter, the communication device may respond to the voice commands of the individual.
Abstract:
An individual desiring to operate a pager (14 or 14') via voice commands (32, 48, 50) sends a message to a repository of voice recongnition codebooks requesting access to a particular codebook. The repository device(s) respond by transmitting (54) the codebook of that individual to at least one pager, which stores the codebook therein (30). In a second embodiment, each individual opearting a pager (14 or 14') by voice commands is provided with a codebook module (30, 42), which contains a suitable memory having at least that operator's codebook stored therein. By inserting the codebook module into the pager, that pager becomes at least partially controllable by the voice commands of that operator.
Abstract:
A split frequency band signal digitizer (10) includes a first mixer (18) for translating a split-band signal (200) about a multiple of the sampling frequency. The split-band signal so translated is then communicated to an analog-to-digital converter (26). The digitized signal is then analyzed to recover an original portion of the split-band signal and a second portion of the signal aliased into a single Nyquist band.
Abstract:
A method of transmitting information from a first site (501) to a second site (502), in which an abridged version (400) of the information is initially transmitted. In response to a predetermined signal (504) from the second site (502), a less abridged version (200) of the information previously communicated is transmitted.
Abstract:
An apparatus (100) is provided for a radio having adjustable operating parameters (131, 132, 141, 142, 151, 152) to adjust at least one such adjustable operating parameter based on the occurrence of one or more predetermined events (120). Operating parameters which may be so adjusted include, but are not limited to, the following: power, talkaround, scan, scanning priority, vehicular repeater, audio speakers, alarms, siren, volume level (141, 142), squelch, display, public address (151, 152), mode, channel, zone, sub-audible code, group identification code, status (131, 132), emergency, message, page, paging messages, call, data mode, key search, priority and record.
Abstract:
A register-modelled radio system (100) comprising a plurality of register-modelled processors (110) having addressable registers (240) for modelling the virtual state of the processor; a serial bus (230), interconnecting the register-modelled processors (110) for communicating between the addressable registers (240); and a communications protocol (Figs. 3 and 10) for passing said information to or from said addressable registers (240), whereby the virtual state of said radio portion may be determined or altered by, respectively, communicating information from or to said addressable register (240). The communications protocol (Fig. 3) further comprises information packet having an address, an operation code, optional data, and an error detection device, such as a cyclical redundancy check packet. The operation code is chosen from the group of primitive operation codes reset, read, write, bit set, bit clear, acknowledge, and negative acknowledge.
Abstract:
A digital voice storage system (20-42) adapted for use in a multiple unit land mobile radio (22) communications system. The system utilizes a PSK signalling system (104, 108 and Fig. 17) with fixed length data packets (212) to control a system capable of multiple message storage of speech at mobile stations (38). Up to eight 64K dynamic RAMS (76) are used in conjunction with a microprocessor (60) to store (306) up to 42 seconds of speech comprising up to eight separate messages (Fig. 14). In addition, the system permits base (20) interrogation of mobiles (22) to determine if a message has been stored for review by the base operator and to determine the remaining recording capacity and total recording capacity (538) of the mobile (22).