US 7,804,891 B2
DEVICE AND METHOD FOR JUDGING COMMUNICATION QUALITY AND PROGRAM USED FOR THE JUDGMENTGeneral
US 7,804,891 B2
DEVICE AND METHOD FOR JUDGING COMMUNICATION QUALITY AND PROGRAM USED FOR THE JUDGMENT
Tech Center:
2600 Communications
Examiner:
David C Payne
Art Unit:
2611 Computer Graphic Processing, 3D Animation, Display Color Attribute, Object Processing, Hardware and Memory
Inventors:
Taichi Majima
Assignee:
Priority:
09/29/06
Filed:
09/29/06
Granted:
09/28/10
Expiration:
01/11/28
Abstract
A device and method for effectively judging a communication quality in a communication system and a program used for the judgment. A communication device generates a four-value FSK symbol by adding a redundant bit to a bit of the most important part of encoded audio data. The symbol containing the redundant bit is set so that the symbol value is the maximum value of the minimum value of the four values which may be obtained. A reception device R receives the FSK modulation wave, restores the symbol, counts the number of redundant bits contained in the restored symbol and having incorrect values, decides whether to perform a bad frame masking process and what kind of bad frame masking process is to be performed, and executes the decided process. Thus, it is possible to accurately or rapidly judge the communication quality with a simple configuration.
Cooperative Patent Classification (CPC)
H04H04L27/10H04L