Browse Prior Art Database

Display of Stored Images

IP.com Disclosure Number: IPCOM000083631D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Bush, MK: AUTHOR [+2]

Abstract

The drawing shows a system for retrieving and displaying stored images. Essentially it consists of local controller 1 which may be connected to a remote host central processing unit (CPU), mass storage unit 2, and at least one work station 3.

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Display of Stored Images

The drawing shows a system for retrieving and displaying stored images. Essentially it consists of local controller 1 which may be connected to a remote host central processing unit (CPU), mass storage unit 2, and at least one work station 3.

Work station 3 includes video display 4 on which stored data is displayed and keyboard display unit 5, which is used by the operator to select which data stored in unit 2 is to be displayed.

Mass storage unit 2 is a microfilm store in which images are stored, for example, on microfiche. Associated with unit 2 is microform reader 6 which may be a TV camera, a slow-scan vidicon camera, a solid-state array scanner or a laser page scanner. As an alternative, mass storage unit 2 may store images in magnetic form in which case reader 6 would be a magnetic reading head.

Controller 1 contains logic necessary to control access to storage unit 2, and various circuits for converting signals from reader 6 into a form suitable for use of video display 4. If signals from reader 6 are analog, they are converted to digital signals in analog/digital converter 7. These digital signals are next compressed in data compression circuit 8 using a convenient compression algorithm. Typical compression algorithms give a 4 to 8-fold reduction in data bits.

The compressed data bits, including format signals such as `end-of-line' from reader 6, are stored in solid-state refresh buffer 9 whose purpose is to refresh data displayed on screen 4. Thus information displayed on screen 4 is refreshed during each frame with video signals derived from buffer 9.

Compressed data in b...