Invention Application
- Patent Title: ANALOG OPTICAL LINK FOR A MOVEABLE ACTUATOR IN A DATA STORAGE SYSTEM
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Application No.: US17856321Application Date: 2022-07-01
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Publication No.: US20230005504A1Publication Date: 2023-01-05
- Inventor: Kevin A. Gomez , Aditya Jain , Anil J. Reddy , Todd Michael Lammers
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Fremont
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Fremont
- Main IPC: G11B13/04
- IPC: G11B13/04 ; G02F1/21 ; G02F1/01 ; H05K1/02

Abstract:
Apparatus and method for transferring data in a data storage system, such as but not limited to a hard disc drive (HDD). An optical link is provided between an analog front end (AFE) of a data storage device controller circuit (SOC) and a preamplifier/driver circuit (preamp) mounted to a rotary actuator to transfer an analog domain signal. A selected component is extracted from the signal using a modulation element such as a micro-resonance ring (MRR) or a Mach-Zehnder Interferometer Modulation (MZM) device. The extracted component is forwarded to a processing circuit to facilitate a transfer of data between a local memory and a non-volatile memory (NVM). The optical link includes a flexible portion in a flex circuit affixed to the rotary actuator and which supports the preamp. Multiplexed read, write, and power control signals are concurrently transmitted via the optical link. The link can concurrently service multiple head-disc assemblies (HDAs).
Public/Granted literature
- US11631431B2 Analog optical link for a moveable actuator in a data storage system Public/Granted day:2023-04-18
Information query
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