Encoder and decoder to encode signal into a scalable codec and to decode scalable codec, and encoding and decoding methods of encoding signal into scalable codec and decoding the scalable codec

Abstract

An encoder and decoder to encode one or more input signals into a scalable codec and to decode the scalable codec, and encoding and decoding methods using a bitstream with a layered structure in the scalable codec change a top coding bit rate to encode the input signals according to a network status, and the bitstream is decoded by analyzing the top coding bit rate included in the bitstream.

What is claimed is: 
     
         1 . A method of encoding an input signal, the method comprising:
 determining a coding bit rate to encode the input signal according to sampling rate and delay information;   encoding, by at least one processing device, the input signal according to the determined coding bit rate;   encoding the determined coding bit rate; and   generating a bitstream including the encoded coding bit rate as well as the encoded input signal.   
     
     
         2 . The method according to  claim 1 , wherein the encoding of the input signal comprises:
 generating a syntax representing the determined coding bit rate; and   encoding the input signal according to the determined coding bit rate to generate the bitstream including the syntax.   
     
     
         3 . The method according to  claim 1 , wherein the determining of the coding bit rate is performed in a network or a terminal. 
     
     
         4 . A method of encoding an input signal, the method comprising:
 receiving delay information of a network;   determining a coding bit rate to encode the input signal based on the received delay information and sampling rate;   encoding, by at least one processing device, the input signal according to the determined coding bit rate   encoding the determined coding bit rate; and   generating a bitstream including information on the encoded coding bit rate as well as the encoded input signal.   
     
     
         5 . The method according to  claim 4 , wherein the determining of the coding bit rate comprises determining the coding bit rate in the network or a terminal. 
     
     
         6 . A method of decoding a bitstream including information on a coding bit rate determined according to delay information, the method comprising:
 obtaining an encoded coding bit rate from the bitstream; and   decoding, by at least one processing device, the bitstream according to the obtained coding bit rate.   
     
     
         7 . The method according to  claim 6 , wherein the coding bit rate is determined in a network or a terminal.