Patent ID: 8126012
Filing Date: 2012-02-28
Classification: H04N

Abstract:
1. A communication apparatus comprising: a communication device configured to perform communication access control; a detection device configured to detect a start and end of a frame of a video to be transmitted; a notifying device configured to notify a transmission request of the frame to the communication device, and a timer configured to determine timeout time of transmission of one frame of the video; wherein the communication device notifies a start of a Block Ack scheme in a media access control level to a receiving device in response to the transmission request notified by the notifying device, and divides the one frame of the video into packets each having a length corresponding to the communication protocol and transmits the divided packets to receiving device, and wherein, if the transmission of all the divided packets of the one frame is completed without a retransmission before the timer times out, the communication device requests the receiving device for ACK transmission of the Block Ack scheme and, if the transmission of all the divided packets of the one frame is not completed without a retransmission before the timer times out, the communication device does not request the receiving device for ACK transmission of the Block Ack scheme wherein the notifying device describes the information indicating that the start or end of the frame of the video is detected in a Real-time Transport protocol header.