Abstract: A wireless microphone attached to a ruggedized, mobile digital video recording system may be used to record audio of events when activated. To conserve file space in a storage device, a sensor may be used to activate the microphone for audio recording, and to cause video recording to begin at the same moment through a pairing mechanism between the wireless microphone and the mobile digital video recording system. This sensor activation provides a complete audio/visual record of the event, or series of events, that caused the sensor to trigger. The microphone may also be manually triggered, thus providing a user with a means to capture audio/visual records in an ad hoc fashion. All recorded events are saved to files in a high-capacity storage device for later retrieval and review.

Abstract: A wireless microphone system for use with a mobile digital recording system is disclosed. The wireless microphone system is comprised of a wireless microphone with a built-in transceiver and an in-vehicle transceiver that is connected to a mobile digital recording system. The wireless microphone can transmit audio information in real-time to the in-vehicle transceiver when the wireless microphone is in radio range of the in-vehicle transceiver. The wireless microphone can operate out of radio range of the in-vehicle transceiver by saving recorded audio data to a memory. The saved audio information can be downloaded to the in-vehicle transceiver when the wireless microphone is back in radio range of the in-vehicle transceiver, and the system is enabled to synchronize the saved audio information with other information collected by the mobile digital recording system during the time that the wireless microphone was out of range of the in-vehicle transceiver.

Abstract: The High Resolution Pre-Event Record system is an innovative means for collecting audio, video, and meta-data in a mobile vehicle platform and continuously recording this information stream to a high-capacity storage device at different levels of data resolution based upon the status of a trigger event. The occurrence of a trigger event will cause the system to store higher resolution data to an on-board high-capacity storage device prepended by a configurable amount of high resolution data previously recorded into a pre-event data buffer. The data stream may later be downloaded to an external storage device for future review and analysis.

Abstract: A method and system for locating control channels, particularly digital control channels, are described. By grouping the channels which are candidates for carrying supervisory messages in blocks indicative of their relative likelihood for being used as control channels, a mobile station can begin its search for a control channel with channels which are most likely to actually be control channels. Placing location information on other channels allows the mobile station to be redirected to a control channel when it reads one of these other channels. Similarly, by placing information describing the location of a control channel in a message associated with handoff, a mobile station avoids the necessity of having to relocate a new control channel associated with the base station to which the mobile has been handed off.

Abstract: A method and system for locating control channels, particularly digital control channels, are described. By grouping the channels which are candidates for carrying supervisory messages in blocks indicative of their relative likelihood for being used as control channels, a mobile station can begin its search for a control channel with channels which are most likely to actually be control channels. Placing location information on other channels allows the mobile station to be redirected to a control channel when it reads one of these other channels. Similarly, by placing information describing the location of a control channel in a message associated with handoff, a mobile station avoids the necessity of having to relocate a new control channel associated with the base station to which the mobile has been handed off.