Mobile TV system and method for synchronizing the rendering of streaming services thereof

摘要

An Internet Protocol (IP)-based mobile TV system and a method for synchronizing the rendering of a streaming service are provided. In the IP-based mobile TV system, a plurality of mobile terminals receives a streaming service from network equipment, along with both a sequence of Network Time Protocol (NTP) time stamps corresponding to the streaming service and a synchronization clock. Each mobile terminal recovers an NTP reference clock for rendering the received streaming service according to both the synchronization clock and a synchronization time difference value, and then renders the received streaming service according to both the recovered NTP reference clock and the received NTP time stamps. Accordingly, the plurality of mobile terminals in the IP-based mobile TV system is able to render the received streaming service synchronously.

主权项

1. A mobile TV system, comprising:
an Internet Protocol (IP)-based mobile TV server set, configured to transmit a streaming service and a sequence of Network Time Protocol (NTP) time stamps corresponding to the streaming service through a Real-time Transport Protocol (RTP); a network equipment, configured to provide at least one broadcast network equipment to transport the streaming service and the sequence of NTP time stamps; and a plurality of mobile terminals, each receiving the streaming service, the sequence of the NTP time stamps, and a synchronization clock from the network equipment, wherein the IP-based mobile TV server set further comprises a service guide server, the service guide server transmits related information of the transmitted streaming service to each of the mobile terminals, wherein the related information comprises a synchronization time difference value specific to the streaming service and the synchronization time difference value is within session description protocol description, wherein each of the mobile terminals receives the related information of the transmitted streaming service before receiving the streaming service, recovers an NTP reference clock for rendering the received streaming service according to the synchronization clock and the synchronization time difference value, and renders the received streaming service according to the recovered NTP reference clock and the received NTP time stamps.