Wireless audio transmission system
First Claim
1. A wireless audio transmission and reception system comprisinga first encoder to receive an analog signal, to digitize said analog signal, and to compress the digitized analog signal using MP-3 compression;
- a frame formatter in communication with the first encoder to divide the compressed digitized analog signal into packets, placing synchronization patterns at a beginning of each packet assembling a number of packets into a frame; and
placing an end-of-frame pattern at an end of said frame;
a bit-stuffing circuit in communication with the frame formatter to insert bits into any frame having insufficient transitions, whereby said insufficient transitions cause errors in receiving the compressed digitized analog signal;
a demodulator in communication with said bit stuffing circuit to synchronize and extract the compressed digitized analog signal from a carrier signal modulated with said compressed digitized analog signal;
a frame remover in communication with the demodulator to remove synchronization patterns from a beginning of each packet of the compressed digitized analog signals and end-of-frame patterns from an end of each frame of packets of the compressed digitized analog signals; and
a bit-extractor circuit in communication with said frame remover to remove bits inserted into the compressed digitized analog signal to restore original transitions of the compressed digitized analog signal.
1 Assignment
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Accused Products
Abstract
A wireless transmission and reception system to convey analog signals within a local transmission area. The wireless transmission system includes a first encoder to receive an analog signal, to digitize the analog signal, and to compress the digitized analog signal using MP-3 compression; a modulator to modulate a carrier signal with the compressed digitized analog signal; and a transmitter for wireless transference of the modulated RF carrier. The reception system has a receiver to acquire the modulated carrier signal; demodulator to extract the compressed digitized analog signal from the modulated carrier signal; and a first decoder to decompress the compressed digitized analog signal using MP-3 decompression and to convert the digitized analog signal to a reproduction of the analog signal.
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Citations
25 Claims
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1. A wireless audio transmission and reception system comprising
a first encoder to receive an analog signal, to digitize said analog signal, and to compress the digitized analog signal using MP-3 compression; -
a frame formatter in communication with the first encoder to divide the compressed digitized analog signal into packets, placing synchronization patterns at a beginning of each packet assembling a number of packets into a frame; and
placing an end-of-frame pattern at an end of said frame;a bit-stuffing circuit in communication with the frame formatter to insert bits into any frame having insufficient transitions, whereby said insufficient transitions cause errors in receiving the compressed digitized analog signal; a demodulator in communication with said bit stuffing circuit to synchronize and extract the compressed digitized analog signal from a carrier signal modulated with said compressed digitized analog signal; a frame remover in communication with the demodulator to remove synchronization patterns from a beginning of each packet of the compressed digitized analog signals and end-of-frame patterns from an end of each frame of packets of the compressed digitized analog signals; and a bit-extractor circuit in communication with said frame remover to remove bits inserted into the compressed digitized analog signal to restore original transitions of the compressed digitized analog signal. - View Dependent Claims (2, 3, 4, 5, 19, 20, 21)
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6. A wireless audio transmitter system comprising
a first encoder to receive an analog signal, to digitize said analog signal, and to compress the digitized analog signal using MP-3 compression; -
a frame formatter in communication with the first encoder to divide the compressed digitized analog signal into packets placing synchronization patterns at a beginning of each packet, assembling a number of the packets to form a frame and placing an end-of-frame pattern at an end of said frame; a bit-stuffing circuit in communication with the frame formatter to insert bits into any frame having insufficient transitions whereby said insufficient transitions cause errors in receiving the compressed digitized analog signal. - View Dependent Claims (7, 8, 9, 22)
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10. A wireless audio receiver system comprising
a demodulator in communication with said bit stuffing circuit to synchronize and extract a compressed digitized analog signal from a carrier signal modulated with said compressed digitized analog signal; -
a frame remover in communication between the demodulator and the first decoder to remove synchronization patterns from a beginning of each packet of the compressed digitized analog signals and end-of-frame patterns from an end of a frame of packets of the compressed digitized analog signals; and a bit-extractor circuit in communication frame remover to remove bits inserted into the compressed digitized analog signal to restore original transitions of the compressed digitized analog signal. - View Dependent Claims (11, 12, 13, 23, 24)
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14. A method for wireless transmission of an analog signal comprising the steps of:
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acquiring the analog signal; digitizing said analog signal; compressing the digitized analog signal according to an MP-3 encoding algorithm; forming frames of the compressed digitized analog signal by the steps of; assembling a plurality of bytes of the compressed digitized analog signal to create packets, placing a synchronization pattern at a beginning of each packet, assembling a plurality of said Packets to form frames, and placing an end-of-frame pattern at an end of each frame; inserting additional bits within any frame having insufficient transitions, whereby said insufficient transitions cause errors in receiving the compressed digitized analog signal; demodulating a carrier signal modulated with said compressed digitized analog signal to extracted the compressed digitized analog signal; removing frames from the compressed digitized analog signal by; removing synchronization patterns from a beginning of each packet, and removing an end-of-frame pattern from each from an end of each frame; and extracting bits inserted to the compressed digitized analog signal to restore original transitions of the compressed digitized analog signal. - View Dependent Claims (15, 16, 17, 18, 25)
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Specification