摘要:
A method and apparatus for receiving streaming data is provided. The method includes establishing a plurality of real-time streaming protocol (RTSP) sessions for receiving the streaming data, and receiving the streaming data through the plurality of RTSP sessions.
摘要:
A method for operating a portable terminal so as to reduce power consumption during the support of a communication service and a portable terminal supporting the same is provided. The method includes activating a Radio Frequency (RF) communication unit, downloading a part of data of predetermined contents through the RF communication unit, buffering the downloaded part of the data in a buffer so as to output the buffered downloaded part of the data, and executing an idle time for terminating or reducing a power supply of the RF communication unit when the downloading of the part of the data of the predetermined contents is completed.
摘要:
A jitter correction method of a transmitting device, a jitter correction method of a receiving device, a transmitting device, and a receiving device are provided. The jitter correction method of the transmitting device includes: determining a time stamp of a video frame; determining a transfer time of an real-time transport protocol (RTP) packet that includes at least a part of the video frame as a payload; generating the RTP packet including the time stamp and the transfer time; and transmitting the RTP packet to a receiving device.
摘要:
A system and method for video quality assessment includes utilizing codec auxiliary information related to the encoding and decoding process to enhance performance of picture quality assessment. In a video transmission system, video quality assessment can be accurately performed in real time with reduced computational load upon the client. In particular, the server performs first picture quality assessment and sends the assessment result to the client, and the client performs second picture quality assessment only when a transmission error occurs to reduce the computational load on the client.
摘要:
A jitter correction method of a transmitting device, a jitter correction method of a receiving device, a transmitting device, and a receiving device are provided. The jitter correction method of the transmitting device includes: determining a time stamp of a video frame; determining a transfer time of an real-time transport protocol (RTP) packet that includes at least a part of the video frame as a payload; generating the RTP packet including the time stamp and the transfer time; and transmitting the RTP packet to a receiving device.
摘要:
A method for compressing an extension field to be selectively included in a Real-time Transport Protocol (RTP) header is provided. It is determined whether an RTP header extension field is included in the RTP header. Information indicating a determination result is recorded. Profile information of the RTP header extension field is recorded. Total length information of the RTP header extension field is recorded. Information indicating whether changed data exists is recorded using a header extension information map.
摘要:
A method for performing an encrypted voice call between a first terminal and a second terminal supporting a Voice over Internet Protocol (VoIP)-based voice call. In the method, the first and second terminals generate and store a bio key using biographical (bio) information of a user in advance before performing a voice call, the first terminal sends a request for a voice call to the second terminal and establishing a session, the first and second terminals exchange and store a bio key stored in each terminal, and the first and second terminals generate a session shared key using the exchanged bio key and starting a Secure Real-time Transport Protocol (SRTP) session, and a restored bio key by acquiring bio information from received data. User authentication is then performed by comparing the bio key with the restored bio key.
摘要:
An audio and video synchronization apparatus and method in a wireless communication network are provided. The audio and video synchronization apparatus includes a receiver that receives audio frames and video frames, a playback buffer that sequentially buffers the audio frames, a detector that determines whether the audio frames are synchronized with the video frames and adjusts a playback time of the video frames based on a playback time of the audio frames if it is determined the audio frames are not synchronized with the video frames.
摘要:
A method for compressing an extension field to be selectively included in a Real-time Transport Protocol (RTP) header is provided. It is determined whether an RTP header extension field is included in the RTP header. Information indicating a determination result is recorded. Profile information of the RTP header extension field is recorded. Total length information of the RTP header extension field is recorded. Information indicating whether changed data exists is recorded using a header extension information map.
摘要:
A method for operating a portable terminal so as to reduce power consumption during the support of a communication service and a portable terminal supporting the same is provided. The method includes activating a Radio Frequency (RF) communication unit, downloading a part of data of predetermined contents through the RF communication unit, buffering the downloaded part of the data in a buffer so as to output the buffered downloaded part of the data, and executing an idle time for terminating or reducing a power supply of the RF communication unit when the downloading of the part of the data of the predetermined contents is completed.