Hardware-driven clock with object-oriented interface

Details Hardware-driven clock with object-oriented interface Hardware-driven clock with object-oriented interface

1994-06-30

1996-06-11

Kriess, Kevin A.

Boots, shoes, and leggings

364270, 3642702, 3642703, 364DIG1, G05F 114

Patent

active

055265154

ABSTRACT:
Timing apparatus for use with a computer system works with clock hardware which periodically generates a tick update signal. The timing apparatus uses a floating point number to maintain a total tick count for representing absolute time so that both a large range and a high resolution can be accommodated. However, since floating point operations can not always be used at hardware, or interrupt, levels and there are some cases where a hardware-dependent time representation will produce performance gains, a hardware dependent clock system is also provided. The clock system is provided with a flexible interface by using object-oriented programming techniques and providing three clock objects that provide for three different clock representations. Each of the objects provides its own methods for converting between the time representation that it uses and the time representations used by the other objects.

REFERENCES:
patent: 4432051 (1984-02-01), Bogaert et al.
patent: 5452435 (1995-09-01), Malouf et al.
Computer Logic: The Functional Design of Digital Computers, Ivan Flores, Prentice-Hall, Inc., 1960 pp. 196-205 and 95-97.

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