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Telephone-apparatus-with-audio-recording-function-and-audio-recording-method-telephone-apparatus-with-audio-recording-function

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Telephone apparatus with audio recording function and audio recording method telephone apparatus with audio recording function

Details

Inventors: Komiya, Kozo;
Assignee: Sony Corporation (Tokyo, JP)
Primary Examiner: Weaver; Scott L.
Assistant Examiner:
Attorney, Agent or Firm: Maioli; Jay H.

A memory for voice memo is provided. A digital audio signal is stored into the memory in a form in which the signal was compression encoded by a variable length code. Thus, a data amount which is required for the voice memo is reduced and the improvement of the recording time and the reduction of the memory capacity can be realized without deteriorating the sound quality. The audio signal is compressed by a system similar to a compression system of a CDMA system and stored into the memory. Thus, there is no need to add any special circuit and a circuit scale and costs are not increased.

DETAILED DESCRIPTION It is, therefore, an object of the invention to provide a telephone apparatus with an audio recording function which can record and reproduce a voice for a long time without using a memory of a large capacity and an audio recording method of such a telephone apparatus with the audio recording function.
To accomplish the above object, according to one aspect of the invention, there is provided an audio recording method of recording a voice into a storage device, comprising: an audio processing step of compressing a non-compressed audio signal when such a signal is inputted and keeping a compressed audio signal as it is when such a compressed signal is inputted; and a storing step of storing an output derived in the audio processing step into the storage device.
According to another aspect of the invention, there is provided an audio reproducing method of reproducing a voice from a storage device, comprising: a reading step of reading a compressed signal which was stored and recorded in the storage device; and an audio processing step of receiving an output derived in the reading step, decompressing the output derived in the reading step when an output of a non-compressed audio signal is required, and keeping the output derived in the reading step as it is when an output of the compressed audio signal is required.
According to still another aspect of the invention, there is provided a transmitting method having a step of recording and reproducing a voice to/from a storage device, comprising: a compressing step of receiving a non-compressed audio signal and compressing it; a storing step of storing an output derived in the compressing step into the storage device; a reading step of reading out a compressed signal which was stored and recorded in the storage device; a modulating step of receiving an output derived in the reading step and modulating it; a high frequency signal processing step of converting an output derived in the modulating step into a high frequency signal; and a transmitting step of transmitting an output derived in the high frequency signal processing step

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