Donald Brunnett is a notable inventor based in Mission Hills, California. He has made significant contributions to the field of disk drive technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and accuracy of disk drive head positioning systems.

Latest Patents

Brunnett's latest patents include a "Disk drive head positioning servo system utilizing encoded track zone." This invention is directed to a head positioning servo system for disk drives that employs a dedicated servo surface. A plurality of servo cells are recorded on the servo surface, each including a sync field for storing multiple magnetic flux transitions. Each sync field consists of multiple unit areas wherein each of said transitions is selectively stored in one or more of said unit areas. In the preferred embodiment, each sync field includes double frequency (2f) transitions which are stored in a single unit area and single frequency (1f) transitions which are stored in two adjacent unit areas. The two types of transitions are used to encode each sync field to define either a valid ('1') sync or a nonvalid ('0') sync. Valid syncs are detected to generate sync pulses for timing control to derive both rotational and radial position information from the servo surface.

Another significant patent is the "Method and apparatus for recording disk servo information." This invention describes a method and apparatus for originally recording servo information on a disk surface. The apparatus comprises a servo writer assembly which includes an optical encoder having a movable input member and means for producing an output signal that indicates small uniform units of movement of said input member. The servo writer assembly is detachably mounted to a disk storage system with the optical encoder input member tightly physically coupled to the head arm of the storage system head disk assembly. During servo writing, the optical encoder output signal is connected in a closed servo loop with the head positioner motor so that the positioner motor can then be operated to precisely radially increment the servo head, track by track, over the disk servo surface.

Career Highlights

Brunnett has had a successful career at Brand Technologies Corporation, where he has been instrumental in developing innovative solutions for disk drive technology. His expertise in servo systems has positioned him as a key figure in the industry.

Collaborations

Throughout his career, Brunnett has collaborated with talented individuals such as Ashok K Desai and Mark A He

Profile summary based on public USPTO records.

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