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Mobile telephone device

A technology of mobile phone and decoding device, which is applied in the direction of telephone communication, selection device, electrical components, etc., can solve the problems of abnormal tones and disadvantages, and achieve the effect of avoiding abnormal tones.

Inactive Publication Date: 2003-02-26
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the output of the erroneous analog sound signal 18 as a result of the above, abnormal tones are disadvantageously produced.

Method used

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  • Mobile telephone device
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Experimental program
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Embodiment Construction

[0017] Below, refer to the attached figure 1 , to describe in detail the mobile telephone device of the embodiment of the present invention. figure 1 is a block diagram showing the configuration of the portable telephone device of the present invention.

[0018] First, refer to figure 1 , to describe a mobile telephone device of an embodiment of the present invention. exist figure 1 Among them, reference numeral 1 is a mobile telephone device. The mobile telephone device 1 comprises: an RF input unit 2 such as an antenna for receiving a radio RF signal 3; RF signal processing means 4 for converting the received RF signal 3 into a baseband signal 5; and a channel decoding unit 6 It is used for performing channel decoding operation on the baseband signal 5, and outputting encoded audio data 7 for each frame, for detecting and correcting audio frame errors, and for outputting frame error information 8 for uncorrectable errors.

[0019] Reference numeral 9 is a sound deco...

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PUM

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Abstract

A portable telephone device, wherein the voice decoding means 9 includes: voice decoding operation means 10 for performing a decoding operation on encoded voice data of a voice frame from the channel decoding means 6, thereby outputting an analog voice signal and voice power information of the voice frame; voice power operation means 14 for accumulating and averaging the voice power information, and outputting comparative power information; comparing means 16 for comparing voice power information of a received voice frame with the comparative power information, and for, when the difference is not smaller than a threshold, outputting a voice output control signal; and voice output control means 12 for controlling a volume of a voice frame having voice power information in which an abnormality is detected based on the voice output control signal. The volume is controlled, so that the generation of an abnormal tone is prevented from occurring.

Description

technical field [0001] The present invention relates to a mobile telephone device for transmitting and receiving sound over a wireless line. Background technique [0002] In a conventional portable telephone set, when a reception error occurs due to distortion of an input signal due to distortion of a wireless line or similar deterioration in its transmission quality, a channel decoding unit detects and corrects the error. In the case of receiving a small amount of error, the received data is recovered by an error correction operation, and the encoded sound data is transmitted to the sound decoding unit in the form of a correct sound frame. In the case of no reception error, encoded sound data is naturally transferred from the channel decoding unit to the sound decoding unit in the form of correct sound frames. [0003] In situations with many reception errors, the channel decoding unit cannot perform error correction well. The channel decoding unit...

Claims

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Application Information

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IPC IPC(8): G10L13/00G10L19/00H03G3/34H04B1/10H04B1/26H04B7/26H04B14/04H04M1/00H04M1/60
CPCH03G3/345H04M1/6016
Inventor 山本直行津金英
Owner PANASONIC CORP
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