Browse Prior Art Database

Method to Optimize CD-ROM System Performance

IP.com Disclosure Number: IPCOM000105624D
Original Publication Date: 1993-Aug-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Helfenberger, C: AUTHOR [+2]

Abstract

Disclosed is a means to improve CD-ROM system performance by optimizing the time required to obtain and display CD-ROM data.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 63% of the total text.

Method to Optimize CD-ROM System Performance

      Disclosed is a means to improve CD-ROM system performance by
optimizing the time required to obtain and display CD-ROM data.

      A CD-ROM based system for data retrieval typically consists of
a Workstation with an attached Display and Keyboard, a File Server,
and a CD-ROM Drive as illustrated in the Fig. 1.  Such a system would
be used as follows:

1.  A user enters a data request via the Keyboard.

2.  The Workstation processes the request and sends it to the File
    Server.

3.  The File Server initiates the appropriate seek activity at the
    CD-ROM Drive to retrieve the requested information.

4.  Once the requested information is retrieved, the File Server
    sends it to the Workstation which sends it to the Display.

      Such a system is normally implemented to retrieve and display
data items by one of two methods.  The first is to retrieve a
quantity of data items to fill an entire screen before any data items
are displayed.  In this case the user may have to wait an inordinate
amount of time before the first data item is displayed.  The second
is to retrieve and display one one data item at a time.  In this
case, the user may have to wait an inordinate amount of time before
data items are displayed.  These two cases are illustrated as Method
1 and Method 2 in Fig. 2.

      The disclosed optimization method illustrated in Fig. 3
utilizes the difference between two pointers (a D...