Avago Technologies/Broadcom Assigned Two Patents

Variable data interleave sizes on hard drives
Avago Technologies International Sales Pte. Limited, Singapore, Singapore, has been assigned a patent (12176001) developed by Yang; Shaohua, San Jose, CA, for “variable data interleave sizes on hard drives.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Improved tools and techniques for configuring a write head of a hard disk drive and/or for writing data to a hard disk drive. The write surface of a disk in the hard disk drive can be divided into multiple logical zones, with different interleave sizes for each zone. This scheme can meet latency requirements for regions closer to the center of the write surface while providing for better error rate performance in regions further away from the center of the write surface.”

The patent application was filed on 2023-07-30 (18/361876).

Improved laser mode hop detection for HDD applications
Avago Technologies International Sales Pte. Limited, Singapore, Singapore, has been assigned a patent (12176010) developed by O′Brien; Scott, Eden Prairie, MN, Rudd; Nathan, Rosemount, MN, and Bhaumik; Jaydip, Boulder, CO, for “systems for and methods for improved laser mode hop detection for hard disk drive applications.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “IA solution for providing laser mode hop detection in hard disk drives can include a first circuit to provide a signal having a step voltage whose amplitude is adjustable according to a first control signal. The solution can include a second circuit causing the signal to be delayed by a time period to produce a delayed signal, the time period adjustable according to a second control signal. The solution can include a filter to receive the delayed signal as input and provide as output an offset signal corresponding to a frequency response a sensor. The system can subtract the offset signal from a sensor signal of a sensor to provide an output.”

The patent application was filed on 2023-10-23 (18/492133).