Patent ID: 7330553
Filing Date: 2008-02-12
Classification: G11C,H04R

Abstract:
1. A portable audio signal recording and reproducing apparatus comprising: an encoder configured to compress audio data via a high-efficiency compression process in accordance with a coding model of a human auditory sense; a memory unit including at least one semiconductor memory configured to store compressed audio data that was previously compressed via high-efficiency compression processing; a decoder configured to decode the compressed data when read out from the memory unit, and configured to produce a decoded output signal according to a reverse processing of the high-efficiency compression processing; a digital/analog converter configured to convert the decoded output signal from said decoder into at least one analog signal; a first headphone driven unit and a second headphone driven unit configured to receive as input at least portions of said at least one analog signal, said first headphone driven unit configured to produce a left audio channel sound and said second headphone driven unit configured to produce a right audio channel sound; and an input unit including a plurality of user-activated interfaces that respectively trigger different functions, wherein the compressed audio data is read out from said memory unit in response to triggering one of said plurality of user-activated interfaces of said input unit.