Method and apparatus for the transmission of time discrete signals between systems operating at different sampling rates

Claim 3

The method defined by claim 1 wherein said first and second sampling rates each have a tolerance range, and wherein the arithmetic means f i , f 0 of each tolerance range is determined and L and M are selected such that f i ·M=f 0 ·L.

Claim 4

The method defined by claim 2 wherein said source and sink systems are asynchronous.

Claim 5

The method defined by claim 2 wherein said source and sink systems are operated in synchronism.

Claim 6

The method defined by claim 2 wherein the arithmetic center frequencies of each tolerance range have a ratio with respect to each other which is not an integer.

Claim 7

The method defined by claim 5 wherein said source and sink systems are asynchronous.

Claim 8

The method defined by claim 1 wherein said first and second sampling rates each have a tolerance range, and wherein the arithmetic center frequencies of each tolerance range have a ratio with respect to each other which is not an integer.

Claim 9

The method defined by claim 7 wherein said source and sink systems are asynchronous.

Claim 10

The method defined by claim 7 wherein said source and sink systems are operated in synchronism.

Claim 11

The method defined by claim 1 wherein said source and sink systems are asynchronous.

Claim 12

The method defined by claim 1 wherein said source and sink systems are operated in synchronism.

Claim 13

The method defined by claim 1 wherein said time discrete signals are digital signals.

Claim 14

Apparatus for transmitting first and second time discrete signals between source and sink systems wherein a first signal x(n) is generated by said source system at a first sampling rate f i and a second time discrete signal y(m) is generated by said sink system at a second sampling rate f 0 which is different from the first sampling rate f i , comprising: L filter groups, each of said L filter groups including M filter elements having the transfer function H l ,m (z LM ), where L and M are integers, l is an integer 0, 1, . . . L-1 corresponding to the filter group in which the filter element is located and m is an integer 0, 1, . . . M-1 corresponding to the location of the filter element in its associated filter group, the inputs of the filter elements of each filter group being connected together to a common terminal; a first multiplexer switch for cyclically distributing said first time discrete signal x(n) to the common terminals of each of said L filter groups at said first sampling rate f i , each of said M filter elements filtering said first time discrete signal at a processing rate f i /L and holding the filtered signal; a summing element having L inputs and an output; and a plurality of L second multiplexer switches, each of said second multiplexer switches cyclically sampling the outputs of the M filter elements in a respective one of said L filter groups at said second sampling rate f 0 and coupling said outputs to a corresponding input of said summing element, said second time discrete signal y(m) having a sampling rate f 0 =M/L f i being generated at the output of said summing element.

Claim 15

Apparatus for transmitting first and second time discrete signals between source and sink systems wherein a first signal x(n) is generated by said source system at a first sampling rate f i and a second time discrete signal y(m) is generated by said sink system at a second sampling rate f 0 which is different from the first sampling rate f i , comprising: L filter groups, each of said L filter groups including M filter elements having the transfer function H l ,m (z LM ), where L and M are integers, l is an integer 0, 1, . . . L-1 corresponding to the filter group in which the filter element is located and m is an integer 0, 1, . . . M-1 corresponding to the location of the filter element in its associated filter group, the inputs of the filter elements of each filter group being connected together to a common terminal; a first multiplexer switch for cyclically distributing said first time discrete signal x(n) to the common terminals of each of said L filter groups at said first sampling rate f i , each of said M filter elements filtering said first time discrete signal at a processing rate f i /L and holding the filtered signal; a summing element having L inputs and an output; and a plurality of L second multiplexer switches, each of said second multiplexer switches cyclically sampling the outputs of the M filter elements in a respective one of said L filter groups at said second sampling rate f 0 and coupling said outputs to a corresponding input of said summing element, said second time discrete signal y(m) having a sampling rate f 0 =M/L f i being generated at the output of said summing element.