Method and apparatus for decoding multiword information

A method for decoding multiword information, comprising the steps of:

• storing low protective codewords of the multiword information into a memory;
• decoding high protective codewords of the multiword information so as to generate high protective word erasure indicators showing whether decoding errors occur;
• storing the high protective word erasure indicators into the memory;
• decoding the low protective codewords by means of an erasure indicator read from the memory;
• and
• marking an erasure indicator for decoding the low protective codewords based on high protective word erasure indicators close to any low protective codeword in the multiword information cluster.

A method for decoding multiword information, comprising the steps of:

• providing a multiword information cluster including synchronization codes and low protective codewords;
• detecting any error flag of the synchronization codes, so as to generate sync erasure indicators;
• storing the sync erasure indicators into a memory;
• and
• decoding the low protective codewords by means of the sync erasure indicators.

A method for decoding multiword information, comprising the steps of:

• providing a multiword information cluster including address field information, user control data and low protective codewords;
• detecting any error flag of the address field information or user control data, so as to generate address field information/user control data erasure indicators;
• storing the address field information/user control data erasure indicators into a memory;
• and
• decoding the low protective codewords by means of at least one of the address field information/user control data erasure indicators.

A method for decoding multiword information, comprising the steps of:

• providing a multiword information cluster including address field information, user control data and low protective codewords;
• detecting any error flag of the address field information or user control data, so as to generate address field information/user control data erasure indicators;
• storing the address field information/user control data erasure indicators into a memory;
• and
• decoding the high protective codewords by means of at least one of the address field information/user control data erasure indicators.

An apparatus for decoding multiword information, comprising:

• a first memory for storing high protective codewords of a multiword information cluster, the multiword information cluster further comprising low protective codewords;
• a decoder for decoding the high protective codewords and correct data to first memory so as to generate high protective word erasure indicators;
• a second memory coupled to the decoder for storing the high protective word erasure indicators, wherein the second memory is isolated from the first memory;
• and
• an erasure generator coupled to the second memory for generating erasure bits for the low protective codewords, wherein the erasure generator marks an erasure bit if high protective word erasure indicators of the second memory close to any low protective codeword in the multiword information cluster show errors.

An apparatus for decoding multiword information, comprising:

• a memory for storing high protective codewords of a multiword information cluster, the multiword information cluster further comprising low protective codewords;
• and
• a decoder for decoding the high protective codewords so as to generate high protective word erasure indicators with localities to the memory;
• wherein an erasure bit of a low protective codeword is marked if a high protective word erasure indicator of a high protective codeword close to the low protective codeword shows errors.