Mobile radio telephone capable of recording/reproducing voice signal and method for controlling the same

Abstract

The present invention relates generally to a mobile radio telephone capable of recording and reproducing received frame data of voice channels, a data rate of which varies based on a voice traffic per unit time. The mobile radio telephone comprises a memory for storing and outputting data according to a control operation, a recording controller for sequentially storing format byte and data packets included in a voice channel frame inputted at a predetermined time period in response to a recording command in communication mode, a reproducing controller for analyzing a format byte of the voice channel frame sequentially stored in the memory and accessing data rate information and packet data in a frame unit, to thereby supply the accessed data to the decoder in response to the reproducing command in an idle mode and a digital-to-analog converter for converting a voice sample data outputted from the decoder into an analog signal.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The present invention relates generally to wireless communication and in particular, to a mobile radio telephone capable of recording and reproducing received frame data of voice channels.[0003]2. Description of the Related Art[0004]In general, a digital mobile communication system has advantages over analog systems both in terms of more efficient use of the frequency spectrum and superior speech quality. Digital mobile communication systems can be generally divided into GSM (Global Systems for Mobile Communication) systems and CDMA (Code Division Multiple Access) systems. The IS-95 (Interim Standard-95) DS / CDMA system has been adopted in both Korea and in the U.S.A. for applications such as PCS (Personal Communication Systems) and digital mobile radio communication systems.[0005]In a mobile radio communication system employing the IS-95 DS / CDMA standard, a transmitter encodes voice data using a vocoder (i.e., a voice coder an...

AI Technical Summary

Benefits of technology

[0012]According to one aspect of the present invention, a mobile radio telephone is provided having a decoder for decoding an input data packet comprising encoded voice sample data based on a predetermined decoding mode, wherein the decoding mode is set according to a supplied data rate. The mobile radio telephone comprises a memory for storing and outputting data according to a control operation; a recording controller for sequentially storing a format byte and a data packet included i

Problems solved by technology

While the general mobile radio telephone is capable of processing both the voice signal of the forward traffic channel and the voice signal of a reverse traffic channel, it is not capable of recording and reproducing voice messages transmitted from a communicating party (i.e., memo function).

For example, in the case where a telephone number is provided from a transmitting party, the user must inconveniently manually record the number as it is spoken otherwise, the information is lost.

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