Patent ID: 8099609
Filing Date: 2012-01-17
Classification: H04N

Abstract:
1. An information processing apparatus comprising: a main body; a system board provided in the main body, the system board including a bus slot; a receiving device provided in the main body, the receiving device including a tuner board detachably connected to the bus slot on the system board, a tuner unit which is provided on the tuner board and receives broadcast program data, a first nonvolatile memory which is provided on the tuner board and stores an encryption key, and an encryption unit which is provided on the tuner board, encrypts the received broadcast program data based on the encryption key and outputs the encrypted broadcast program data; a storage device provided in the main body; a system unit which is provided on the system board and executes a process of storing the encrypted broadcast program data, which is output from the receiving device, into the storage device, a process of decrypting the encrypted broadcast program data, which is stored in the storage device, based on the encryption key which is stored in the first nonvolatile memory on the tuner board, and a process of reproducing the decrypted broadcast program data; and a second nonvolatile memory which is provided on the system board and stores first key recovery data for recovering the encryption key which is stored in the first nonvolatile memory on the tuner board, wherein the first nonvolatile memory further stores second key recovery data for recovering the encryption key, to back up the first key recovery data stored in the second nonvolatile memory on the system board.