Neil H Maclean

US Patent:

6633933, Oct 14, 2003

Filed:

Sep 30, 1999

Appl. No.:

09/410172

Inventors:

Don Smith - Meadow Vista CA
Ka Kit Ling - San Jose CA
Neil H. MacLean - Scotts Valley CA
Alan K. Ng - Sunnyvale CA

Assignee:

Oak Technology, Inc. - Sunnyvale CA

International Classification:

G06F 1300

US Classification:

710 74, 710 2, 710 8, 710 11, 710 14, 710 38, 710 62, 710 64, 710 65, 710 72, 710104, 710105

Abstract:

A controller for use in an optical storage device is provided. The controller includes a block decoder/encoder for processing data to and from a media of the optical storage device. An ATAPI interface is also provided and is configured to process data and control signals for selectively communicating data to and from the optical storage device during operation in an ATAPI mode. Universal serial bus (USB) logic is configured to process data and control signals for selectively communicating data to and from the optical storage device during operation in a USB mode. The USB logic is configured to utilize data transfer control logic implemented by the ATAPI interface. Accordingly, the one controller can be integrated into either an external peripheral device that communicates over a USB connection in the USB mode, or into an internal peripheral device that communicates over an IDE connection in the ATAPI mode. The optical storage device can be any type of optical storage device, such as, for example a CD-RW, a CD-ROM, a CD-R, a DVD, and the like. Further, the optical storage device can be in the form of an internal or external peripheral device.

US Patent:

50972618, Mar 17, 1992

Filed:

Nov 19, 1990

Appl. No.:

7/615665

Inventors:

Glen G. Langdon - San Jose CA
Neil H. MacLean - Tucson AZ
Robert W. Miller - Tucson AZ
Mayank R. Patel - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03M 730

US Classification:

341 51

Abstract:

A tape drive system includes a compaction scheme whereby the data to be stored on the media is encoded and formatted to take less space along the tape length. The data to be written to tape is placed into equal byte lengths or sets. The sets of data are directed to a plurality of encoders in turn and compacted through an Arithmetic Binary Coding program having two statistic tables per encoder to allow format compatibility with a higher throughput compaction scheme. The compacted sets are sequenced and formed into packets. Then the packets are autoblocked to delineate the packets while providing a single Inter Block Gap per autoblock length and written on the tape. On read, the data is retrieved from the tape and deblocked to separate the packets. Each packet is separated into compacted sets of data. The compacted sets are directed to a plurality of decoders in turn and decompacted.