Media distribution switching method, receiving device and transmitting device

摘要

A request packet generation unit generates a request packet for requesting the distribution of media information. A request packet transmitting unit transmits the request packet. A request response packet receiving unit receives a request response packet corresponding to the request packet from a transmitting device. A request response analysis unit analyzes a request response set in the request response packet. A mode determination unit switches between an operation mode for real-time transmission and that for non-real-time transmission according to device type information, attached to the request response, indicating whether the transmitting device is for real-time transmission or non-real-time transmission. A first receiving unit receives media information in an operation mode for real-time transmission. A second receiving unit receives media information in an operation mode for non-real-time transmission.

主权项

1. A media distribution switching method for switching media information distributed from a transmitting device to a receiving device on a packet network, comprising:
transmitting a request packet for requesting distributing of the media information from the receiving device to the transmitting device; determining by the transmitting device whether a request mode set in the request packet matches an operation mode of the transmitting device; returning from the transmitting device to the receiving device when the request mode matches the operation mode, a request response packet to which device type information is attached, the device type information indicating whether the transmitting device is for real-time transmission in which a program clock reference is used to perform synchronization between a transmission side and a reception side when a real-time encoder is specified in the request response packet or non-real-time transmission in which flow control is performed to perform synchronization between the transmission side and the reception side when a distribution server is specified in the request response packet; and performing a reception process by switching between an operation mode for real-time transmission and an operation mode for non-real-time transmission in the receiving device, according to device type information attached to the request response packet received from the transmitting device.