Patent ID: 8149860

Claim:
A cable broadcast receiving apparatus, comprising: a cable broadcast receiver for receiving a cable broadcast signal; a point-of-deployment (POD) cable card for processing out-of-band data received from the cable broadcast receiver; an in-band (INB) processor for processing in-band data received from the cable broadcast receiver; and a controller for composing a final channel map by comparing, for at least one channel number, corresponding information mapped in a first channel map composed by processing the out-of-band data with corresponding information mapped in a second channel map composed by processing the in-band data; wherein the first channel map is composed by using at least virtual channel table information and network information table information included in system information data contained in the out-of-band data, and the second channel map is composed by using at least virtual channel table information and network information table information included in data of a program and system information protocol contained in the in-band data; wherein the controller determines whether there exists one channel number such that, for the one channel number, the corresponding information mapped in the first channel map differs from the corresponding information mapped in the second channel map; wherein, if the controller determines that the one channel number exists, the controller selects the corresponding information mapped to the one channel number in the second channel map as the corresponding information mapped to the one channel number in the final channel map; and wherein the first channel map, the second channel map and the final channel map each comprise a collection of mapping entries each of which maps information for detecting a channel signal of a particular channel number to the particular channel number.