Patent ID: 7603190
Filing Date: 2009-10-13
Classification: G11B,H04N

Abstract:
1. A digital audio recording apparatus, comprising: an input unit for accepting input audio data having a specific sampling frequency, a specific field frequency, and a specific format and for performing baseband processing of the input audio data; a processor designed to process audio data having a basic field frequency and a basic format and to perform error-corrective encoding; an output unit for writing audio data output from the processor to a recording medium; and a converter provided between the input unit and the processor to convert the first audio data to the second audio data, wherein, when the specific field frequency is different from the basic field frequency and the specific format is different from the basic format, the converter converts the specific sampling frequency at a ratio between the specific field frequency and basic field frequency and converts the specific format to the basic format before passing the input audio data to the processor; wherein the processor operates with a clock corresponding to the converted sampling frequency to perform error-corrective encoding of the audio data of the basic format, wherein the converter converts the specific format to the basic format by jointly changing the number of samples per field and number of bits per sample while maintaining the total number of bits per field, wherein the total number of bits per field is calculated as the product of the number of samples per field and number of bits per sample, and wherein the converter converts the specific sampling frequency by changing the number of samples per field.