Marvell Assigned Three Patents

Unified time base for storage device data channel
Marvell Asia Pte Ltd., Singapore, Singapore, has been assigned a patent (12206753) developed by Katchmart; Supaket, San Jose, CA, for a “unified time base for storage device data channel.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A method of clocking a data channel of a storage device includes generating a single time-base frequency signal, deriving from the single time-base frequency signal, using a plurality of frequency-modification techniques, a plurality of individual clock signals, each respective one of the individual clock signals being for clocking a respective one of reading, writing and servo functions of the data channel. When the storage device is a disk storage device having a rotational frequency, generating a single time-base frequency signal may include generating a time-base frequency signal based on the rotational frequency. Deviation of the single time-base frequency from the rotational frequency may be detected, and the deviation may be compensated for. Each technique of the frequency-modification techniques may be a digital frequency-modification technique, such as a digital timing recovery technique or a digital frequency division technique.”

The patent application was filed on 2022-11-08 (18/053465).

Health management for magnetic storage media
Marvell Asia Pte Ltd., Singapore, Singapore, has been assigned a patent (12197738) developed by Nangare; Nitin, Sunnyvale, CA, for a “health management for magnetic storage media.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The present disclosure describes aspects of health management for magnetic storage media. In some aspects, a media health manager determines, with a read channel, read metrics for a sector of magnetic storage media that resides in a zone of magnetic storage media. The media health manager accesses read metrics of the zone and updates the read metrics of the zone based on the read metrics determined for the sector to provide updated read metrics for the zone of magnetic storage media. A health score for the zone of magnetic storage media is then determined with a neural network based on the updated read metrics of the zone of magnetic storage media. By so doing, gradual wear of the magnetic storage media may be predicted using the health score, enabling replacement of a magnetic storage media device before failure to improve reliability or availability of data stored to the device.”

The patent application was filed on 2022-09-19 (17/933243).

Codeword interleaving over magnetic media surfaces
Marvell Asia Pte Ltd., Singapore, Singapore, has been assigned a patent (12198724) developed by Oberg; Mats, San Jose, CA, for a “codeword interleaving over magnetic media surfaces.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The present disclosure describes aspects of codeword interleaving over magnetic media surfaces. In some aspects, segments of a codeword are spread or interleaved across multiple surfaces of magnetic storage media. Data for one or more codewords may be received by a read/write channel and, for each codeword, a respective index is selected, received, or generated. The index may indicate which sector partitions of the multiple surfaces that segments of one of the codewords are to be written. The data of the codewords can be segmented and then arranged in an interleaver based on the respective index to which the codeword corresponds. The codeword segments are written from the interleaver to sectors of the multiple surfaces of the magnetic media. By so doing, codewords may be spread across multiple surfaces, such that a loss of a portion of a segment track does not prevent readback and decoding of the codewords.”

The patent application was filed on 2023-07-24 (18/357790).