Data receiver with symbol rate discrimination and statistical analysis functions

Claim 3

The method of claim 1, comprising the further step of: multiplying said combined symbol values by a factor inversely proportional to a number of interleaved blocks in said subset.

Claim 4

The method of claim 1, wherein said statistical property measures dispersion of symbol values in said interleaved blocks.

Claim 5

The method of claim 3, wherein said statistical property is a variance property.

Claim 6

The method of claim 1, wherein said step of selecting comprises the further steps of: calculating an average value of said statistical property for said interleaved blocks; and selecting interleaved blocks in which said statistical property differs from said average value by less than a certain amount.

Claim 7

A data reproducing apparatus for receiving a signal created from data having a first symbol rate, by interleaving said data at a second symbol rate higher than said first symbol rate to form frames divisible into identical interleaved blocks, comprising: a statistical processor for computing statistical properties of the interleaved blocks in one of said frames and selecting, from said statistical properties, a subset of mutually similar interleaved blocks, said subset comprising a variable number of interleaved blocks; and a data accumulator for combining the interleaved blocks in said subset by adding corresponding data values in different interleaved blocks in said subset, and outputting resulting sums.

Claim 8

A data reproducing apparatus for receiving a signal created from data having a first symbol rate, by interleaving said data at a second symbol rate higher than said first symbol rate to form frames divisible into identical interleaved blocks, comprising: a statistical processor for computing statistical properties of the interleaved blocks in one of said frames and selecting, from said statistical properties, a subset of mutually similar interleaved blocks, said subset comprising a variable number of interleaved blocks; and a data accumulator for combining the interleaved blocks in said subset by adding corresponding data values in different interleaved blocks in said subset, and outputting resulting sums.

Claim 9

The data reproducing apparatus of claim 6, wherein said statistical processor finds an average value of the statistical properties computed for said interleaved blocks, and selects, as said subset of mutually similar interleaved blocks, interleaved blocks with statistical properties not differing from said average value by more than a predetermined amount.

Claim 10

The data reproducing apparatus of claim 6, wherein said statistical properties comprise a data dispersion property.

Claim 11

The data reproducing apparatus of claim 8, wherein said data dispersion property is a variance.

Claim 12

The data reproducing apparatus of claim 6, also comprising: a multiplier for multiplying the sums output by said data accumulator by a factor inversely proportional to the number of interleaved blocks in said subset.

Claim 13

The data reproducing apparatus of claim 10, wherein said statistical properties comprise a dispersion property.

Claim 14

The data reproducing apparatus of claim 11, wherein said dispersion property is a variance.

Claim 15

A data receiver for receiving a signal created from convolutionally coded data having a first symbol rate, by interleaving said data at a second symbol rate higher than said first symbol rate to form frames, each frame being divisible into a plurality of nominally identical interleaved blocks, comprising: a deinterleaver for deinterleaving said signal; a statistical processor for computing statistical properties of said interleaved blocks in one of said frames and selecting, from said statistical properties, a subset of mutually similar interleaved blocks, said subset comprising a variable number of said interleaved blocks; a data accumulator coupled to said deinterleaver and said statistical processor, for combining the interleaved blocks in said subset by adding corresponding data values in different interleaved blocks in said subset, and outputting resulting sums in a deinterleaved order; and a Viterbi decoder coupled to said data accumulator, for convolutionally decoding the sums output by said data accumulator.

Claim 16

A data receiver for receiving a signal created from convolutionally coded data having a first symbol rate, by interleaving said data at a second symbol rate higher than said first symbol rate to form frames, each frame being divisible into a plurality of nominally identical interleaved blocks, comprising: a deinterleaver for deinterleaving said signal; a statistical processor for computing statistical properties of said interleaved blocks in one of said frames and selecting, from said statistical properties, a subset of mutually similar interleaved blocks, said subset comprising a variable number of said interleaved blocks; a data accumulator coupled to said deinterleaver and said statistical processor, for combining the interleaved blocks in said subset by adding corresponding data values in different interleaved blocks in said subset, and outputting resulting sums in a deinterleaved order; and a Viterbi decoder coupled to said data accumulator, for convolutionally decoding the sums output by said data accumulator.

Claim 17

The data receiver of claim 13, wherein said statistical processor finds an average value of the statistical properties computed for said interleaved blocks, and selects, as said subset of mutually similar interleaved blocks, interleaved blocks with statistical properties not differing from said average value by more than a predetermined amount.

Claim 18

The data receiver of claim 13, wherein said statistical properties comprise a data dispersion property.

Claim 19

The data receiver of claim 15, wherein said data dispersion property is a variance.

Claim 20

The data receiver of claim 13, also comprising: a multiplier for multiplying the sums output by said data accumulator by a factor inversely proportional to the number of interleaved blocks in said subset.

Claim 21

The data receiver of claim 17, wherein said statistical properties comprise a dispersion statistic.

Claim 22

The data receiver of claim 18, wherein said data dispersion property is a variance.