Browse Prior Art Database

Digital Sample Display

IP.com Disclosure Number: IPCOM000078843D
Original Publication Date: 1973-Mar-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Weiss, RL: AUTHOR

Abstract

Digital data sampled by a high-speed digital sampler of the type described in the IBM Technical Disclosure Bulletin, Vol. 15, No. 10, March 1973, pages 3192 and 3193, is continuously displayed on a cathode-ray oscilloscope (CRO) screen.

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Digital Sample Display

Digital data sampled by a high-speed digital sampler of the type described in the IBM Technical Disclosure Bulletin, Vol. 15, No. 10, March 1973, pages 3192 and 3193, is continuously displayed on a cathode-ray oscilloscope (CRO) screen.

A conventional CRO display beam is completely scanned across the X axis once every 2,000 Y scans. Each Y scan corresponds to one of 2,000 digital sample memory location cycles. The X scan is reset at the end of every complete cycling through the 2,000 memory locations. Eight-bit memory data is continuously supplied to an 8-bit output register which is sampled once for each memory cycle.

Each time the output register is sampled, a delay line emits a series of sequential pulses to gates connected to the register. The gates thus supply pulses, at a Z output, which are timed as a function of the output register contents. For example, if there is a 1 bit stored in the position H, a pulse will appear at the Z output line earlier than if a 0 bit were stored in position H.

Pulses on the Z output line brighten the CRO screen to display eight horizontal sets of points, each set representing one corresponding data input line to the sampler.

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