Patent ID: 9269021
Filing Date: 2016-02-23
CPC Classification: G06F,G06K,G09G,H04N

Claim Text:
1. A method comprising: providing, by an in-home device, television programming to a set top box; transmitting, by the set top box, a request for a television-related graphical user interface, wherein the television-related graphical user interface pertains to one of a television guide, digital video recording information, or pay-per-view information; receiving, by the in-home device, the request; transmitting, by the in-home device, a first image pertaining to the television-related graphical user interface; transmitting, by the set top box, another request for another television-related graphical user interface; receiving, by the in-home device, the other request for another television-related graphical user interface; dividing, by the in-home device, the first image into first sub-images; calculating, by the in-home device, a first checksum value for each of the first sub-images; storing, by the in-home device, the first checksum values of the first sub-images; dividing, by the in-home device, a second image into second sub-images, wherein the second image is the other television-related graphical user interface; calculating, by the in-home device, a second checksum value for each of the second sub-images; storing, by the in-home device, the second checksum values of the second image; comparing, by the in-home device, the first checksum values with the second checksum values; determining, by the in-home device, whether one or more differences in checksum values exist between the first checksum values and the second checksum values and correspondingly whether one or more differences exist between the first sub-images and the second sub-images; and outputting, by the in-home device, an indication that there are no differences between the first image and the second image, in response to a determination that there are no differences between the first checksum values and the second checksum values.