Personal spectrum recorder

Abstract

A system and method is disclosed for a personal radio recorder. The personal radio recorder allows for random access of communication signals by identifying a channel and time. The personal radio recorder is capable of concurrent reception, storage and playback of a complete spectrum of individual communication signals. A wide-band signal is received, and concurrently demodulated into a plurality of individual communication signals. These audio signals are identified by channel and time. Individual signals may be simultaneously played, paused, or stored for later playback. Compression may be used to make efficient use of storage. Storage may be fixed, removable, or a combination of both. The system is also capable of storing signals that are already digitally formatted, and is compatible with existing analog or digital playback devices. The personal radio recorder may playback multiple channels of communications data, either previously recorded or currently broadcast, to multiple output stages at the same time.

Description

RELATED APPLICATIONS [0001] This application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Application Ser. No. 60 / 363,133, dated Mar. 11, 2002, entitled “Personal Time Shift Radio Recorder (PRR) / Time Shift Radio,” the contents of which are herein incorporated by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to the concurrent capture and demodulation of a full region of spectrum of selectable radio frequencies typically containing audio and communication signals for time shifting, random access of individual channels or time frames, digital recording and advanced content management. [0004] 2. Description of Related Art [0005] Currently, state of the art audio systems provide live playback of audio broadcast signals. These audio systems accept a wide-band signal and selectively demodulate a signal channel of the broadcast audio spectrum for playback. For example, a frequency modulated (“FM”) stereo tuner rec...

AI Technical Summary

Benefits of technology

"The present invention is a personal spectrum recorder that allows users to capture and manage communications channels. It can receive, demodulate, and process entire spectrums of broadcasts, and can play back multiple channels simultaneously. The system has a signal acquisition stage, a channel extractor, a file management system, and output stages. The system can also compress and store individual channels for more efficient storage. The technical effects of this invention include improved signal-to-noise ratios, automatic selection of channels, and simultaneous playback of multiple channels."

Problems solved by technology

However, a problem with state of the art audio systems is that such systems require listeners to adjust the audio system tuner to the station at the time the broadcast is occurring.

Another problem with such systems is that if the listener is not listening to the broadcast, no practical method exists for accessing the missed broadcast for later playback.

Yet another problem with such systems is that if the listener hears the end of a news broadcast and wishes to hear a missed portion, no method exists for replaying the missed portion.

Moreover, if the listener becomes interrupted while listening to an audio broadcast, the listener cannot simply replay the broadcast.

However, a problem with such systems is that a communications system with one tuner can only record one communications channel at any one time.

These requirements make the state of the art audio systems impractical for random access to audio broadcasts on multiple channels, past and present.

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