Reexamination Control No. 90/005,742
Patent 5,253,341
1 The control and processing unit 48 (see Fig. 3) of the remote query and data retrieval
2 system may be an Intel 8086, 80286, 80386, 80486 or higher power Intel compatible
3 microprocessor or, alternatively, a Motorola 68000 series microprocessor. Id. at col. 6, ll. 22-27.
4 This control and processing unit operates under the control of an operating system such as MS-
5 DOS, PC-DOS, UNIX, 27 XENIX or other operating system. Id. at col. 6, ll. 27-29.
6 The more powerful host/server 11 can preferably be UNIX-based and should utilize a
7 CISC- or RISC-based "processor," id. at col. 3, ll. 36-38; col. 4, ll. 13-26,28 such as an HP Apollo
8 Series 7000 with PA-RISC architecture. Id. at col. 3, ll. 38-40. The record before us does not
9 include any details of the HP Apollo Series 7000.
10 Various compression and decompression techniques are discussed, such as FRACTAL,
11 CCITT, and JPEG. Id. at col. 7, ll. 33. The ‘341 patent explains that in order to accommodate
12 efficient compression and decompression of animated sequences (as in feature film video), the
27 UNIX is an operating system for a wide variety of computers, from mainframes to
personal computers, that supports multitasking and is ideally suited to multi-user applications.
Que's Computer User Dictionary (Que's Dictionary) 461 (1990 ed.) (copy enclosed).
28 The term "CISC" refers to a "complex instruction set computer," which is a central
processing unit (CPU) that can recognize as many as 100 or more instructions, enough to carry
out most computations directly. Que's Dictionary 106 (copy enclosed). "RISC" refers to a
"reduced instruction set computer," which is a CPU in which the number of instructions the
computer can execute is reduced to a minimum to increase processing speed. Id. at 388 (copy
enclosed).
The idea of a RISC architecture is to reduce the instruction set to a bare
minimum, emphasizing the instructions that are used most of the time, and
optimizing them for the fastest possible execution. The instructions left out of the
chip must be carried out by combining the ones left, but because these
instructions are needed far less frequently, a RISC processor usually runs 50 to 75
percent faster than its CISC counterpart.
RISC processors are also cheaper to design, debug, and manufacture
because they are less complex.
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