Seismic playback system

Details Seismic playback system Seismic playback system

1973-10-29

1977-03-01

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340 155GC, H03K 1304

Patent

active

040104621

ABSTRACT:
Hereinafter disclosed is methodology and apparatus for converting wide dynamic amplitude range digital data recorded in floating point digital word form, comprising a binary coded mantissa and a binary coded exponent, to an analog signal, or oscillogram, of compressed dynamic amplitude range. The digital word, occupying a number of binary bit positions, is, in algebraic form, .+-.AG.sup..sup.-E ; where A represents the mantissa, or argument, G represents the base, or radix, of the number system used and E represents the exponent. Since the base G is constant at 8, for example, the only binary bits that need to be recorded are those representing the mantissa A and the exponent E. In reconverting the digital data to analog form for making an oscillogram, or wiggle trace, it is proposed to compress the dynamic range and, yet, at the same time avoid introducing serious distortion. Apparatus for performing the aforesaid changes, among other things, is disclosed.

REFERENCES:
patent: 3376557 (1968-04-01), Godinez
patent: 3525948 (1970-08-01), Sherer et al.
Harrison, "IBM Technical Disclosure Bulletin" vol. 5, No. 5, Oct. 1962, pp. 30-31.

Affiliated with

Also associated with

Rating

Seismic playback system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seismic playback system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic playback system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1355195