Method and apparatus for simultaneously retrieving portions of a data stream from different channels
First Claim
1. A method, comprising:
- converting a plurality of carrier signals into a digital data stream;
extracting from said digital data stream, data carried by at least two carrier signals; and
combining at least portions of data extracted from said at least two carrier signals to form a complete bitstream, said extracted data having associated with it stream identifier and sequence code information for, respectively, identifying the complete bitstream corresponding to the extracted data and determining the position of the extracted data within the complete bitstream.
4 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method for simultaneously processing each of a plurality of carrier signals having data modulated thereon, wherein a complete data stream is formed by extracting at least portions of at least two of the modulated signals and combining the extracted portions. Each of the portions of the complete data stream comprises a plurality of packets having associated with them respective stream identification and sequence codes, where the stream identification identifies the complete bit stream to be formed, and the sequence codes identify the order or position within the complete bitstream that the associated data packets should be inserted.
58 Citations
29 Claims
-
1. A method, comprising:
-
converting a plurality of carrier signals into a digital data stream;
extracting from said digital data stream, data carried by at least two carrier signals; and
combining at least portions of data extracted from said at least two carrier signals to form a complete bitstream, said extracted data having associated with it stream identifier and sequence code information for, respectively, identifying the complete bitstream corresponding to the extracted data and determining the position of the extracted data within the complete bitstream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method, comprising:
-
band limiting a received signal to pass a plurality of carrier signals, each of said carrier signal having modulated thereon, and within a channel bandwidth, a respective data bearing stream;
converting the band limited received signal to a digital signal;
derotating each of the digitized carrier signals to produce respective derotated carrier signals;
demodulating each of at least two filtered carrier signals to extract therefrom respective data bearing streams; and
combining data from at least two data bearing streams into a resultant data stream, said at least two data bearing streams comprising respective portions of said resultant data stream. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
-
-
24. A method, comprising:
-
band limiting a received signal to pass substantially those frequencies occupying a spectral region between a first frequency f1 and a second frequency f2;
converting, using an analog-to-digital converter having a sampling rate fS, the band-limited signal to produce a digital signal therefrom, said sampling rate fS being greater than f2;
derotating each of a plurality of data bearing signals within said digital signal to produce respective derotated signals;
filtering each of the respective derotated signals to remove channel energy outside of the respective defined channel;
decimating each of the filtered and derotated signals to reduce the number of samples representing each data bearing signal;
demodulating each of at least two filtered carrier signals to extract therefrom respective data bearing signal; and
combining at least respective portions of at least two of the resulting decimated data bearing signals into a single data signal.
-
-
25. Apparatus, comprising:
-
an analog to digital converter, for converting a plurality of carrier signals into a digital data stream;
a plurality of channel processors, for extracting from said digital data stream, data carried by respective carrier signals; and
a processor, for combining at least portions of said data extracted from at least two carrier signals to produce a complete bitstream, said extracted data having associated with it stream identifier and sequence code information for determining, respectively, the complete bitstream corresponding to the data and the sequence within the complete bitstream of the data. - View Dependent Claims (26, 27, 28, 29)
-
Specification