Appeal No. 1997-1925
Application No. 08/465,315
BACKGROUND
The appellant's invention relates to a communication system signal processing
apparatus with ROM stored signal procedures which are executed in RAM. The system
transfers the data processing procedures for the digital signal processor (DSP) from ROM
associated with the control processor to the DSP high speed RAM so as to reduce the
size of the expensive high speed RAM. An understanding of the invention can be derived
from a reading of exemplary claim 1, which is reproduced below.
1. A signal processing apparatus for processing digital communication
signals according to selected procedures from among a plurality of stored
signal processing procedures comprising:
a digital signal processor for executing signal processing of said digital
communication signals according to selected procedures from among a
plurality of signal procedures;
a random access memory (RAM) for storing a plurality of signal procedures
for use in controlling the operation of said digital signal processor (DSP) for
the processing of signals according to selected procedures from among
said signal procedures stored in said RAM;
a read only memory (ROM) for storing the plurality of signal procedures
which are to be transferred to said RAM for use in processing said digital
communication signals in said digital signal processor and for use in
controlling operations of a control processor (CPU); and
a control processor connected in interprocessor communication with said
digital signal processor for reading from said ROM said plurality of stored
signal procedures, including said stored signal procedures for use in
controlling operations of said control processor, and for controlling said
2
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