Signal encoding and decoding system allowing adding of signals in a form of frequency sample sequence upon decoding

Claim 1

A system for encoding and decoding signals, comprising: (a) a signal compressing and encoding apparatus comprising: a plurality of A/D converters, each of the converters receiving an audio input signal on an input line and converting the audio input signal into a time sample sequence; a plurality of audio encoders, each of the audio encoders transforming one of the time sample sequences, respectively, into a frequency sample sequence, the plurality of audio encoders operating with respect to a common frame clock to synchronize the compressed and encoded frequency sample sequences processed by the plurality of audio encoders; and multiplexing means for multiplexing the compressed and encoded frequency sample sequences and outputting a multiplexed bit stream, and (b) a compressed signal decoding apparatus comprising: separating means for separating selected first bit streams from the multiplexed bit stream; decoding means for decoding the first bit streams separated by the separating means into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences decoded by the decoding means to produce a sum signal; and transforming means for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 2

A system for encoding and decoding signals, comprising: (a) a signal compressing and encoding apparatus comprising: a plurality of A/D converters, each of the converters receiving an audio input signal on an input line and converting the audio input signal into a time sample sequence; a plurality of audio encoders, each of the audio encoders transforming one of the time sample sequences, respectively, into a frequency sample sequence, the plurality of audio encoders operating with respect to a common frame clock to synchronize the compressed and encoded frequency sample sequences processed by the plurality of audio encoders; and multiplexing means for multiplexing the compressed and encoded frequency sample sequences and outputting a multiplexed bit stream, and (b) a compressed signal decoding apparatus comprising: separating means for separating selected first bit streams from the multiplexed bit stream; decoding means for decoding the first bit streams separated by the separating means into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences decoded by the decoding means to produce a sum signal; and transforming means for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 18

A method for transmitting a multiplexed bit stream and decoding the transmitted multiplexed bit stream, the multiplexed bit stream produced by comprising, encoding and multiplexing input signals of a plurality of input lines, the method comprising the steps of: receiving audio input signals on a plurality of input lines and converting the audio input signals into time sample sequences; transforming each of the time sample sequences into a frequency sample sequence, respectively, and compressing and encoding each transformed frequency sample sequence with respect to a common frame clock to synchronize the compressed and encoded frequency sample sequences; multiplexing the compressed and encoded frequency sample sequences, and outputting the multiplexed bit stream; separating selected first bit streams from the multiplexed bit stream; decoding the separated first bit streams into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences to produce a sum signal; transforming the sum signal into a decoded time sample sequence, and outputting the decoded time sample sequence.

Claim 19

A method for transmitting a multiplexed bit stream and decoding the transmitted multiplexed bit stream, the multiplexed bit stream produced by comprising, encoding and multiplexing input signals of a plurality of input lines, the method comprising the steps of: receiving audio input signals on a plurality of input lines and converting the audio input signals into time sample sequences; transforming each of the time sample sequences into a frequency sample sequence, respectively, and compressing and encoding each transformed frequency sample sequence with respect to a common frame clock to synchronize the compressed and encoded frequency sample sequences; multiplexing the compressed and encoded frequency sample sequences, and outputting the multiplexed bit stream; separating selected first bit streams from the multiplexed bit stream; decoding the separated first bit streams into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences to produce a sum signal; transforming the sum signal into a decoded time sample sequence, and outputting the decoded time sample sequence.

Claim 20

A system for encoding and decoding signals, the system transmitting a multiplexed bit stream and decoding the transmitted multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing audio input signals, the system comprising: a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences composed of the sample signals; a plurality of encoders for transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing the audio bit streams generated by the plurality of encoders to output the multiplexed bit stream; and (b) a compressed signal decoding apparatus comprising: a bit stream separating unit for selecting a plurality of the audio bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sampled sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 21

A system for encoding and decoding signals, the system transmitting a multiplexed bit stream and decoding the transmitted multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing audio input signals, the system comprising: a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences composed of the sample signals; a plurality of encoders for transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing the audio bit streams generated by the plurality of encoders to output the multiplexed bit stream; and (b) a compressed signal decoding apparatus comprising: a bit stream separating unit for selecting a plurality of the audio bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sampled sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 22

A system for encoding and decoding signals, the system transmitting a multiplexed bit stream and decoding the transmitted multiplexed bit stream, the multiplexed bit stream produced by multiplexing compressed and encoded audio input signals together with video bit streams, the system comprising: (a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences; a plurality of encoders transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of encoders, and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing the audio bit stream generated by the plurality of encoders together with the video bit stream to output the multiplexed bit stream; and (b) a compressed signal decoding apparatus comprising: a bit stream separating unit for selecting a plurality of audio bit streams from the multiplexed audio bit stream and separating the selected audio bit streams together with video bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sample sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping unit for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 23

A system for encoding and decoding signals, the system transmitting a multiplexed bit stream and decoding the transmitted multiplexed bit stream, the multiplexed bit stream produced by multiplexing compressed and encoded audio input signals together with video bit streams, the system comprising: (a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences; a plurality of encoders transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of encoders, and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing the audio bit stream generated by the plurality of encoders together with the video bit stream to output the multiplexed bit stream; and (b) a compressed signal decoding apparatus comprising: a bit stream separating unit for selecting a plurality of audio bit streams from the multiplexed audio bit stream and separating the selected audio bit streams together with video bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sample sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping unit for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 24

A system for encoding and decoding signals, the system storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing input signals, the system comprising: (a) a signal compressing and encoding apparatus comprising: a plurality of A/D converters, each of the A/D converters receiving an input signal and converting the input signal into a time sample sequence; a plurality of audio encoders, each of the audio encoders transforming one of the time sample sequences, respectively, into a frequency sample sequence, compressing and encoding the frequency sample sequence at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of audio encoders; and multiplexing means for multiplexing the compressed and encoded frequency sample sequences, and outputting the multiplexed bit stream, and (b) a compressed signal decoding apparatus comprising: separating means for separating first bit streams from the multiplexed bit stream; decoding means for decoding the first bit streams separated by the separating means into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences decoded by the decoding means to produce a sum signal; and transforming means for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 25

A system for encoding and decoding signals, the system storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing input signals, the system comprising: (a) a signal compressing and encoding apparatus comprising: a plurality of A/D converters, each of the A/D converters receiving an input signal and converting the input signal into a time sample sequence; a plurality of audio encoders, each of the audio encoders transforming one of the time sample sequences, respectively, into a frequency sample sequence, compressing and encoding the frequency sample sequence at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of audio encoders; and multiplexing means for multiplexing the compressed and encoded frequency sample sequences, and outputting the multiplexed bit stream, and (b) a compressed signal decoding apparatus comprising: separating means for separating first bit streams from the multiplexed bit stream; decoding means for decoding the first bit streams separated by the separating means into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences decoded by the decoding means to produce a sum signal; and transforming means for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 31

A method for storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing input signals, the method comprising the steps of: receiving audio input signals on a plurality of input lines and converting the audio input signals into time sample sequences; transforming each of the time sample sequences into a frequency sample sequence, and compressing and encoding each transformed frequency sample sequence at a common frame clock rate to synchronize each of the compressed and encoded frequency sample sequences; multiplexing first bit streams including the compressed and encoded frequency sample sequences, and outputting a multiplexed bit stream; separating selected first bit streams from the multiplexed bit stream; decoding the separated first bit streams into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences to produce a sum signal; and transforming the sum signal into a decoded time sample sequence, and outputting the decoded time sample sequence.

Claim 32

A method for storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing input signals, the method comprising the steps of: receiving audio input signals on a plurality of input lines and converting the audio input signals into time sample sequences; transforming each of the time sample sequences into a frequency sample sequence, and compressing and encoding each transformed frequency sample sequence at a common frame clock rate to synchronize each of the compressed and encoded frequency sample sequences; multiplexing first bit streams including the compressed and encoded frequency sample sequences, and outputting a multiplexed bit stream; separating selected first bit streams from the multiplexed bit stream; decoding the separated first bit streams into decoded frequency sample sequences; adding means for mixing the decoded frequency sample sequences to produce a sum signal; and transforming the sum signal into a decoded time sample sequence, and outputting the decoded time sample sequence.

Claim 33

A system for encoding and decoding signals, the system storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing audio input signals of a plurality of input lines, and the system comprising: a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences composed of the sample signals; a plurality of encoders for transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of encoders, and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing audio bit streams generated by the plurality of encoders to output the multiplexed bit stream; and b) a compressed signal decoding apparatus comprising: a bit stream multiplexing and separating unit for selecting a plurality of audio bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sample sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping unit for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 34

A system for encoding and decoding signals, the system storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by compressing, encoding and multiplexing audio input signals of a plurality of input lines, and the system comprising: a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences composed of the sample signals; a plurality of encoders for transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of encoders, and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing audio bit streams generated by the plurality of encoders to output the multiplexed bit stream; and b) a compressed signal decoding apparatus comprising: a bit stream multiplexing and separating unit for selecting a plurality of audio bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sample sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping unit for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 35

A system for encoding and decoding signals, the system storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by multiplexing compressed and encoded audio input signals together with video bit streams, and the system compressing: (a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences; a plurality of encoders for transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of encoders, and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing the audio bit stream generated by the plurality of encoders together with the video bit stream to output the multiplexed bit stream; and b) a compressed signal decoding apparatus comprising: a bit stream multiplexing and separating unit for selecting a plurality of audio bit streams from the multiplexed bit stream and separating the selected audio bit streams together with video bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sample sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping unit for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.

Claim 36

A system for encoding and decoding signals, the system storing a multiplexed bit stream and decoding the stored multiplexed bit stream, the multiplexed bit stream produced by multiplexing compressed and encoded audio input signals together with video bit streams, and the system compressing: (a) a signal compressing and encoding apparatus comprising: a plurality of analog-to-digital (A/D) converters for sampling the audio input signals at a common sampling clock rate and outputting time sample sequences; a plurality of encoders for transforming the time sample sequences into frequency sample sequences, compressing and encoding the frequency sample sequences at a common frame clock rate to synchronize the compressed and encoded frequency sample sequences processed by the plurality of encoders, and producing an audio bit stream having a predetermined format including the compressed and encoded frequency sample sequences; and a bit stream multiplexing formatter for multiplexing the audio bit stream generated by the plurality of encoders together with the video bit stream to output the multiplexed bit stream; and b) a compressed signal decoding apparatus comprising: a bit stream multiplexing and separating unit for selecting a plurality of audio bit streams from the multiplexed bit stream and separating the selected audio bit streams together with video bit streams from the multiplexed bit stream; a plurality of quantization decoding units for decoding the audio bit streams separated by the bit stream multiplexing and separating unit into decoded frequency sample sequences; an adder for mixing the decoded frequency sample sequences decoded by the quantization decoding units to produce a sum signal; and a frequency-to-time mapping unit for transforming the sum signal into decoded time sample sequences, and outputting the decoded time sample sequences.