China Radio International

Beijing Kaiguang Infotech Co., Ltd.

Broadease Technologies Co., Ltd.

Beijing Cri-Tech Radio and Television Technologies Co., Ltd.

Hongqi Jiang

Min Wu

Lian Wang

Xiaowei Cao

Xiaoning Feng

Xiaoge Huang

Zhentao Xin

Yi Guan

Suhui Shen

Xinhong Xu

According to a method for encapsulating or decapsulating a general data stream, one or more data sections are obtained by encapsulating data of a transport object based on a format of the general data stream. The data section includes a data section head and a data section payload. The data section head includes a basic section head and an extension section head or includes the basic section head only. The basic section head includes a transport object identity, a data section length, a data section payload encapsulation mode and an extension section head flag. The encapsulation mode uses a variable-length packet encapsulation mode, a fixed-length packet encapsulation mode or a stream encapsulation mode. The flag indicates whether there is the extension section head and the extension section head includes at least one extended parameter. The one or more data sections are concatenated to obtain and transmit the general data stream.

Method and device for encapsulating and de-encapsulating general data stream

The present invention relates to a method and system for implementing a large area and continuous coverage of programs in a digital audio broadcasting, wherein, part of carrier frequencies are set as common carrier frequencies, and other carrier frequencies are set as service carrier frequencies; all of the common carrier frequencies are combined together to achieve a seamless coverage for the large area; a transmitting end transmits a common frequency point identifier and a program information list on the common carrier frequencies, and transmits digital broadcasting programs on the service carrier frequencies; a receiving end identifies the common carrier frequency based on the common frequency point identifier and receives the digital broadcasting program on the common carrier frequencies; for a specific program desired to be received, all the carrier frequencies on broadcasting of the program are searched based on the received program information list, and the carrier frequency with best signal quality is selected for receiving; during the reception process of the specific program, signal quality of other carrier frequency on broadcasting of the specific program is monitored, and when the signal quality of current receiving carrier frequency decreases, the program is continue to be received by switching to another carrier frequency with better signal quality. By using the method and system according to the present invention, it can be realized that programs can be continuously covered for a large area and received seamlessly.

Method and system for implementing a large area continuous coverage of programs in digital audio broadcasting

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Beijing, China

Hongqi Jiang