Abstract: A method and system for playing background music and key tone based on an embedded browser, and a digital television receiving terminal. The method comprises: analyzing and downloading web data, intercepting protocol registration events, and sending a background music start command when the background music need to be played; analyzing transport stream (TS) data pushed by a server, obtaining data required for playing the background music, and playing the background music; and receiving a key operation command from a user, analyzing the TS data pushed by the server when playing the background music, obtaining data required for playing key tone, and playing the key tone instructed in in the key operation command. With the preceding method, system and digital television receiving terminal, defects in concurrently playing multi-channel audio data are overcome and the background music and key tone can be played concurrently.

Abstract: A method and a device for arithmetic code package outputting. The method comprises: acquiring the 7-bit output string of the upper bits according to the CodLow value, i.e., the starting position of the probability space to be updated, and using the 7-bit ID string to identify the output characters with undetermined state in the 7-bit output string; acquiring the number of valid bits according to the CodRange value, i.e., the length of the probability space to be updated, wherein the number of valid bits indicates the number of valid bits of output characters in the 7-bit output string according to the CodLow value to be updated; extracting the valid output characters in the 7-bit output string according to the number of valid bits, identifying the output characters with undetermined state among the extracted valid output characters according to the 7-bit ID string; and processing the extracted valid output characters, acquiring and outputting the coding output bytes.