Broadcast signal processing apparatus and channel tuning method
US8336068B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2007 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Jan 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4432
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A broadcast signal processing apparatus and channel tuning method are provided. The method comprises 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 programs and data. The method further includes: transferring the input channel tuning key signal to the application program and a service context portion in the OCAP middleware; creating a virtual inner channel map in the service context portion, and obtaining channel information from the virtual inner channel map; performing channel tuning in advance using the obtained channel information; searching the channel information by the application program; requesting channel tuning to the OCAP middleware with the searched channel information; judging whether the searched channel information is identical to the obtained channel information; and completing channel tuning by taking the advance tuning if both channel information are identical to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.