Radio communication apparatus
First Claim
1. A radio communication apparatus comprising:
- means for detecting quality of a received speech data included in a received signal;
means for recording the received speech data and parameter data indicating the quality detected by said detecting means; and
means for processing the recorded received speech data based on the recorded parameter data and generating the processed speech data.
0 Assignments
0 Petitions
Accused Products
Abstract
A radio communication apparatus for transmitting speech data by encoding and compressing data, and multiplexing in a TDMA/TDD method has developed to have automatic answering function wherein the received speech data (compressed data) is stored in a semiconductor memory and reproduced thereafter when the user wishes. The tone quality of the received speech data is detected on the basis of the received control data, and the parameter indicating the tone quality is recorded together with the speech data. The recorded speech data is reproduced in accordance with the parameter. Such parameters as unique word error indicating no synchronization in the speech data and CRC error indicating the occurrence of some error in the received speech data are used as the parameter. When the unique word error occurs, speech data all the bits of which are “0” is used for the speech data. When the CRC error occurs, the decoded speech data may be suppressed. The defect speech data including the error which occurs in the data transmission can be prevented from being reproduced with no compensation.
11 Citations
25 Claims
-
1. A radio communication apparatus comprising:
-
means for detecting quality of a received speech data included in a received signal;
means for recording the received speech data and parameter data indicating the quality detected by said detecting means; and
means for processing the recorded received speech data based on the recorded parameter data and generating the processed speech data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A radio communication apparatus for receiving speech data and control data accompanied with the speech data, comprising:
-
means for dividing a received signal into the speech data and the control data;
parameter obtaining means for detecting quality of the speech data during transmission based on the control data and forming an identification parameter indicating the detected quality, the identification parameter having a smaller amount of bit than that of the control data;
recording means for recording the speech data and the identification parameter; and
processing means for reproducing the speech data and the identification parameter and processing the reproduced speech data in accordance with the identification parameter. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
-
-
22. A terminal device of a multiple-access radio communication-system, the device comprising:
-
a memory for recording a speech data;
a speech codec having a speech data processor for processing the speech data;
a channel codec for extracting an encoded speech data of its own channel in a received signal;
means for detecting a synchronization error and a bit error based on a control bit included in the encoded speech data;
means for recording the result of error detection by said detection means and the encoded speech data into the memory; and
processing means for reading from said memory the encoded speech data and the detection result and supplying the encoded speech data to the speech codec, wherein said speech data processor processes the encoded speech data in accordance with the detection result. - View Dependent Claims (23, 24)
-
-
25. A radio communication apparatus for receiving information data to be transmitted and control data accompanied with the information data, the apparatus comprising:
-
means for dividing a reception signal into the information data and the control data;
identification parameter obtaining means for detecting quality of the information data during transmission on the basis of the control data and generating an identification parameter indicating a result of the detection;
storing means for storing the information data and the identification parameter; and
processing means for reading from the storing means the information data and the identification parameter, and reproducing the information data after being processed in accordance with the identification parameter.
-
Specification