Patent ID: 7868626

Claim:
A burst noise canceling apparatus, comprising: an analog-to-digital converter device configured to sample an analog signal and convert the analog signal to a plurality of digital values; a digital value delay output device configured to delay output of the plurality of digital values by a delay time and output a plurality of delayed digital values; a burst noise detector device configured to detect burst noise within the analog signal and output at least one detection pulse in response to the detection; a noise canceling device configured to: detect whether a removal operation is in progress, the removal operation used to remove digital values representative of the burst noise within the plurality of delayed digital values; initiate a canceling operation of the output of said digital value delay output device after a removal start time has elapsed from a time when a first detection pulse is generated and when the removal operation is not in progress; terminate the canceling operation after a removal termination time has elapsed from the time when the first detection pulse is generated if said burst noise detector device does not generate a second detection pulse after the first detection pulse and before the removal operation is finished; and prolong the removal operation if said burst noise detector device generates the second detection pulse and terminate the removal operation after the removal termination time has elapsed from a time when the second detection pulse is generated.