Patent ID: 8336068
Filing Date: 2012-12-18
Classification: H04H,H04N

Abstract:
1. A channel tuning method in a broadcast signal processing apparatus comprising a host including Open Cable Application Platform (OCAP) middleware for communication with an application program provided from a broadcasting station, and a memory for storing various programs and data, the channel tuning method comprising: when a channel tuning key signal is input by a user, transferring, by the host, the input channel tuning key signal simultaneously to both the application program without passing through the OCAP middleware and a service context portion in the OCAP middleware; creating, by the host, a virtual inner channel map which is in the service context portion and has a structure similar to an inner channel map existing in the application program, and obtaining, by the host, a channel information about a channel to be tuned in correspondence to the channel tuning key signal from the virtual inner channel map; performing, by the host, channel tuning in advance using the obtained channel information about the channel to be tuned; searching, by the application program, the channel information about the channel to be tuned by the application program, which has received the channel tuning key signal; receiving, by the host, a request from the application program for the OCAP middleware to perform channel tuning with channel information about the channel to be tuned that was identified in the inner channel map existing in the application program; judging, by the host, whether the searched channel information with which the application program has requested the channel tuning is identical to the obtained channel information from the virtual inner channel map; and completing, by the host, the channel tuning by taking the performed channel tuning in advance if the channel information obtained from the virtual inner channel map is identical to the searched channel information with which the application program has requested the channel tuning.