Systems and methods for dynamic scaling in a read data processing system

A method for data processing, the method comprising:

• providing a decoder circuit, wherein the decoder circuit receives a first input and provides a decoded output;
• providing a detector circuit, wherein the detector circuit receives a second input and provides a detected output;
• dynamically determining a first scaling value and a second scaling value based at least in part on the decoded output;
• multiplying the decoded output by the first scaling value to yield the second input;
• and
• multiplying the detected output by the second scaling value to yield a product output.

A disk drive system, the disk drive system comprising:

• a storage medium;
• a read channel device operable to receive data derived from the storage medium, wherein the read channel device includes:
• a decoder circuit, wherein the decoder circuit is operable to provide a decoded output;
• a dynamic scalar calculation circuit, wherein the dynamic scalar calculation circuit is operable to determine a first dynamic scaling value and a second dynamic scaling value based at least in part on the decoded output;
• a first multiplier circuit, wherein the first multiplier circuit operable to multiply the decoded output by the first dynamic scaling value and to provide a first scaled output;
• a detector circuit, wherein the detector circuit is operable to receive the first scaled output and to provide a detected output;
• and
• a second multiplier circuit, wherein the second multiplier circuit is operable to multiply the detected output by the second dynamic scaling value and to provide a second scaled output.