Memory read-channel with selective transmission of error correction data

A method performed by a memory device for reading data from a memory media associated with said memory device, wherein said data comprises user data, error detection data and error correction data, wherein said error detection data is used to detect said data error in said user data, said method comprising:

• transmitting said data and said error detection data to a control system;
• receiving an indicator from said control system to suspend said transmission if a data error is detected based on an evaluation of said error detection data;
• suspending said transmitting step if said indicator indicates that said data error is detected, wherein said control system evaluates said error detection data to detect said data error and generates said indicator when an error is detected;
• and
• transmitting said error correction data to said control system only if said data error is detected.

A control system for obtaining data from one of a flash memory device and a hard disk drive, wherein said data comprises user data, error detection data and error correction data, wherein said error detection data is used to detect a data error in said user data and said error correction data is used to correct said data error in said user data, said control system comprising:

• at least one processor, coupled to said flash memory device or said hard disk drive, operative to:
• obtain said user data and said error detection data from a portion of said flash memory device or a sector of said hard disk drive;
• evaluate said error detection data to determine if there is a data error;
• obtain said error correction data for said portion of said flash memory device or said sector of said hard disk drive only if a data error is detected;
• and
• provide an indicator to said flash memory device or said hard disk drive to suspend said transmission if a data error is detected.

A memory system for reading data from a flash memory device or a hard disk drive associated with said memory device, wherein said data comprises user data, error detection data and error correction data, wherein said error detection data is used to detect a data error in said user data and said error correction data is used to correct said data error in said user data, said memory system comprising:

• at least one processor, coupled to the flash memory device or a hard disk drive, operative to:
• transmit said data and said error detection data to a control system;
• receive an indicator from said control system to suspend said transmission if a data error is detected based on an evaluation of said error detection data;
• suspend said transmitting step if said indicator indicates that said data error is detected, wherein said control system evaluates said error detection data to detect said data error and generates said indicator when an error is detected;
• and
• transmit said error correction data to said control system only if said data error is detected.