Patent ID: 8208629
Filing Date: 2012-06-26
Classification: H04N

Abstract:
1. A video monitoring system comprising: a monitoring camera for capturing digital image data, the monitoring camera including an encryption unit for encrypting the digital image data by dividing the digital image data into a plurality of first image data blocks and rearranging the first image data blocks to produce non-sequential digital image data; and a monitoring terminal including a decryption unit for decrypting the non-sequential digital image data by dividing the non-sequential digital image data into a plurality of second image data blocks being identical to the first image data blocks divided in the monitoring camera and rearranging the second image data blocks to produce sequential digital image data for display on the monitoring terminal, wherein the digital image data is encrypted by lines, the encryption unit is configured to divide one line in the digital image data into the first image data blocks and rearrange the first image data blocks into one line of the non-sequential digital image data; wherein the monitoring camera further comprises an encryption rule generator for generating an encryption rule according to an encryption key and a predetermined encryption algorithm, and the monitoring terminal further comprises a decryption rule generator for generating a decryption rule reversed to the encryption rule according to a decryption key and a predetermined encryption algorithm; wherein the encryption rule generator randomly generates a group of encryption dividing points for each line of the digital image data as the encryption rule depending on the encryption key, and the decryption rule generator randomly generates a group of decryption dividing points for each line of the digital image data as the decryption rule depending on the decryption key, and wherein