Patent
1995-05-18
1997-05-13
Teska, Kevin J.
395806, G06F 1700, G06F 9455
Patent
active
056301049
ABSTRACT:
A disk drive stores multimedia data in long spiral data tracks. The tracks on opposite surfaces of the disk spiral in opposite directions, so that a track on one surface can be read as the actuator sweeps in, and a track on the opposite surface can be read as the actuator sweeps out. Because the actuator only follows spiral tracks without performing long seek operations, the actuator motor can be reduced in size and stresses on actuator bearings and other parts are reduced. Additionally, due to reduced disturbances associated with seeks, it is possible to follow tracks more closely and therefore reduce the width of individual tracks. Further cost reductions are accomplished by spinning the disks at a slower speed and reducing the size of the spin motor accordingly. Finally, data density can be increased simply because multimedia data does not require the same low error rate as conventional data. Preferably, a group of disk drives optimized for multimedia data is used to form a video-on-demand system. Compressed, interleaved portions of a video presentation, such as a motion picture, are stored in blocks on the spiral tracks. The drives read the blocks on one spiral track at a time from beginning to end, placing the data from these blocks in a set of buffers corresponding to different short time intervals. Video signals are output from the buffers. Any short time interval of the presentation can be accessed on demand by switching to the appropriate buffer.
REFERENCES:
patent: 4107746 (1978-08-01), Conway
patent: 4138741 (1979-02-01), Hedlund et al.
patent: 4142209 (1979-02-01), Hedlund et al.
patent: 4420828 (1983-12-01), Yoshida et al.
patent: 4422110 (1983-12-01), Reynolds
patent: 4439849 (1984-03-01), Nabeshima
patent: 4475132 (1984-10-01), Rodesch
patent: 4502082 (1985-02-01), Ragle et al.
patent: 4513406 (1985-04-01), Ishihara
patent: 4535366 (1985-08-01), Pullen
patent: 4543621 (1985-09-01), Lindberg et al.
patent: 4587579 (1986-05-01), Cocke et al.
patent: 4599667 (1986-07-01), van Blerk
patent: 4608618 (1986-08-01), Sturtevant-Stuart
patent: 4636885 (1987-01-01), Yamada et al.
patent: 4654724 (1987-03-01), Nagano
patent: 4714967 (1987-12-01), Bizjak
patent: 4757488 (1988-07-01), Nagai et al.
patent: 4796098 (1989-01-01), Giddings
patent: 4797752 (1989-01-01), Giddings
patent: 4814903 (1989-03-01), Kulakowski et al.
patent: 4819218 (1989-04-01), Barnard
patent: 4841441 (1989-06-01), Nixon et al.
patent: 4893256 (1990-01-01), Rutherfoord et al.
patent: 4935917 (1990-06-01), Yoshimaru
patent: 5001570 (1991-03-01), Tagawa
patent: 5166921 (1992-11-01), Matsui
patent: 5195092 (1993-03-01), Wilson et al.
patent: 5202875 (1993-04-01), Rosen et al.
patent: 5208665 (1993-05-01), McCalley et al.
patent: 5253124 (1993-10-01), Kondo et al.
patent: 5262964 (1993-11-01), Bonsall et al.
patent: 5268846 (1993-12-01), Bonsall et al.
patent: 5341474 (1994-08-01), Gelman et al.
patent: 5369533 (1994-11-01), Ottesen et al.
patent: 5394548 (1995-02-01), Nakajima et al.
patent: 5412629 (1995-05-01), Shirane
patent: 5440677 (1995-08-01), Case et al.
patent: 5461415 (1995-10-01), Wolf et al.
patent: 5487167 (1996-01-01), Dinallo et al.
patent: 5508732 (1996-04-01), Bottomley et al.
patent: 5508940 (1996-04-01), Rossmere et al.
patent: 5510843 (1996-04-01), Keene et al.
patent: 5511002 (1996-04-01), Milne et al.
Masatsugu Tanji et al., "Video and audio disk file system", Third International Conference On Optical Mass Storage, Los Angeles, CA, USA, Proceedings of SPIE, vol. 529, Jan. 22-24, 1985, pp. 116-125.
IBM Technical Disclosure Bulletin, "Spiral Track Disk Format For Continuous Data Rate", vol. 36, No. 9A, Sep. 1993, pp. 491-492.
IBM Technical Disclosure Bulletin, "Data Storage", vol. 20, No. 7, Dec. 1977, pp. 2581-2583.
Patent Abstracts of Japan, vol. 13, No. 87, p. 835, (JP-A-63268160, Nov. 4, 1988), Feb. 28, 1989.
Patent Abstracts of Japan, vol. 16, No. 341, p. 1391, (JP-A-4102267, Apr. 3, 1992), Jul. 23, 1992.
Patent Abstracts of Japan, vol. 12, No. 29, p. 660, (JP-A-62180540, Aug. 7, 1987), Jan. 28, 1988.
Patent Abstracts of Japan, vol. 13, No. 377, p. 922, (JP-A-1130375, May 23, 1989), Aug. 22, 1989.
"Framework for Interactive Video-On-Demand Service", by A Singru and A. Kumar, IEEE, Computers and Communications, 1995 Int'l. Phoenix Conference, Jul. 1995, pp. 636-642.
Terry Costlow, "Redesigned Disk Drives Go To The Movies", Electronic Engineering Times, Jan. 17, 1994, pp. 37, 39, 40 and 53.
Rick Boyd-Merritt, "Video-On-Demand Battle Brewing", Electronic Engineering Times, Oct. 4, 1993, pp. 1 and 114.
P.J. Mulholland et al., "Servo Track Writer", IBM Technical Disclosure Bulletin, vol. 20, No. 11 Apr. 1978, pp. 4616-4618.
F. Tsui et al., "Helical Data Track Access Control", IBM Technical Disclosure Bulletin, vol. 15, No. 3, Aug. 1972, pp. 1043-1044.
M. Johnson, "DASD-Based Signal Correlators", IBM Technical Disclosure Bulletin, vol. 27, No. 5, Oct. 1984, pp. 3017-3018.
D.H. Brown et al., "Sprial Direct Access Storage Device Format For Non-Stop Multimedia Data Transfers", IBM Technical Disclosure Bulletin, vol. 37, No. 8, Aug. 1994, pp. 7-8.
R.A. Aziz, "Data Storage", IBM Technical Disclosure Bulletin, vol. 20, No. 7, Dec. 1977, pp. 2581-2583.
W. L. McNeil, "Addressing Method To Support Video Memory Interleaving", IBM Technical Disclosure Bulletin, vol. 30, No. 11, Apr. 1988, pp. 79-84.
R. Baber, "Multimedia Extensions To Tutorial Manager For Officevision", IBM Technical Disclosure Bulletin, vol. 33, No. 2, Jul. 1990, p. 440.
R. A. Pascoe, "Interactive Computer/Video Server", IBM Technical Disclosure Bulletin, vol. 34, No. 3, Aug. 1991, pp. 67-68.
R. A. Pascoe, "Automatic Multiple Source Selection In A Video Conference", IBM Technical Disclosure Bulletin, vol. 34, No. 7A, Dec. 1991, pp. 385-386.
R. A. Pascoe, "Multimedia Bitmap Video Imaging In An OS/2 Window", IBM Technical Disclosure Bulletin, vol. 34, No. 7A, Dec. 1991, pp. 402-403.
R. H. J. deNijs, "Multimedia Network System", IBM Technical Disclosure Bulletin, vol. 35, No. 4B Sep. 1992, pp. 118-119.
B. K. Aldred et al., "Electronic Phone Book For Video Conferencing", IBM Technical Disclosure Bulletin, vol. 36, No. 06A, Jun. 1993, pp. 57-62.
Ottesen Hal H.
Smith Gordon J.
Van Leeuwen George W.
Frejd Russell W.
International Business Machines - Corporation
Teska Kevin J.
Truelson Roy W.
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