Seagate Technology Incorporated

Maxtor Corporation

Yin Lung Shih

Maurice L Schlumberger

An H Nguyen

Trung Thuc Nguyen

Mike Lee

Gaetano Bonfiglio

Matt Levy

A storage device responds to a content request by watermarking the content and providing the watermarked content to the requester. The watermarked content uniquely identifies the storage device so that the storage device is traceable from the watermarked content.

Storage device with traceable watermarked content

Video data in an encoded frame is reduced by adjusting orthogonal transform coefficients in the encoded frame during trick play operation such as fast forward or fast reverse. The orthogonal transform coefficients are adjusted by selecting essential orthogonal transform coefficients with high energy and non-essential orthogonal transform coefficients with low energy, maintaining or strengthening the essential orthogonal transform coefficients and attenuating or removing the non-essential orthogonal transform coefficients. In an MPEG bit stream, the encoded frame is an I-frame and the orthogonal transform coefficients are discrete cosine transform (DCT) coefficients.

Video data reduction in MPEG bit stream

A cipher engine performs cipher processing (encrypting/decrypting) on logical data streams in a physical data stream in a storage device. As the physical data stream changes from a first logical data stream to a second logical data stream, and the cipher engine switches from cipher processing the first logical data stream to the second logical data stream, cipher information of the first logical data stream is stored in a cipher state memory, cipher information of the second logical data stream is retrieved from the cipher state memory, and the cipher engine resumes cipher processing the second logical data stream using the cipher information of the second logical data stream. Advantageously, a virtually unlimited number of logical data streams is supported and duplicate cipher hardware is avoided.

Disk drive with flexible data stream encryption

A locking data cable () is disclosed. The data cable () includes a data plug () and an associated lock (). When the data plug () is engaged with a data port () of a data storage device (), an actuator () of the locking data cable () may be used to change the lock () from an unlocked position to a locked position.

Growing community of inventors

Saratoga, CA, United States of America

Yin Lung Shih