Abstract: A block interleaving/de-interleaving method and address generator thereof. The block interleaver segments the coded symbols into blocks according to a predetermined column value (C). The interleaver reads the coded symbols of each block by jumping according to the corresponding values (T0:TC-1) of a sequence matching table and the column value, and writes the values in sequence. The block de-interleaver reads the coded symbols sequentially, and re-assembles the coded symbols in the original order according to the same column value (C) and sequence matching table as the interleaver.

Abstract: A system and a method for updating firmware are disclosed. The system includes a storage device and an electronic device. The storage device has an update code and a backup region for storing a backup code. The electronic device includes a processor, a first memory, and a second memory. The first memory stores an original code and a restore flag. The second memory is used to temporarily store the original code for execution by the processor. The original code is backed up, through the second memory, to the backup region as the backup code. The restore flag is enabled, and the original code in the first memory is replaced by the update code.

Abstract: A security verification method of a mobile communication system is provided. The method includes: (1) a first key and a second key are generated and stored in a first processor and a second processor respectively; (2) when receiving a request, the first processor generates a first message and encrypts the first message into a first encrypted message with a first key; (3) the first encrypted message is transmitted to the second processor; (4) the second processor decrypts the first encrypted message and generates a second message with a second key; (5) the second processor encrypts the second message into a second encrypted message with the first key; (6) the second encrypted message is transmitted to the first processor; and (7) the first processor decrypts the second encrypted message to a third message with the second key, and the request is allowed if the third message is verified by the first processor.

Abstract: A block interleaving/de-interleaving method and address generator thereof. The block interleaver segments the coded symbols into blocks according to a predetermined column value (C). The interleaver reads the coded symbols of each block by jumping according to the corresponding values (T0:TC-1) of a sequence matching table and the column value, and writes the values in sequence. The block de-interleaver reads the coded symbols sequentially, and re-assembles the coded symbols in the original order according to the same column value (C) and sequence matching table as the interleaver.