US 5,966,185 A · Electronic equipment and method of controlling electronic equipment

Abstract

A microcomputer gives instructions to a sound processor to set a value of a volume prescribing a sound volume outputted through a speaker to a predetermined value as a parameter. The sound processor stores the value of the parameter in a RAM and sets a sound volume corresponding to the value of stored parameter. The microcomputer reads the value of parameter which is set practically by a sound processor, and decides whether the value of the parameter is different from the value that the setting thereof has been instructed or not, and decides that abnormality has been generated in the sound processor when they are different from each other, thus making it possible to detect generation of abnormality in an apparatus that has no function of detecting generation of abnormality.

Claims12

Dependent claims

Electronic equipment in which a plurality of circuit portions are connected mutually by an internal bus, comprising:

a microcontroller connected to said internal bus for controlling said plurality of circuit portions through said internal bus;
wherein:
each of said plurality of circuit portions has a plurality of parameters that are set by said microcontroller and is provided with a memory for storing a set value for the parameter received from said microcontroller through said bus;
and
said microcontroller outputs the set values of said plurality of parameters to said plurality of circuit portions so as to store these set values in said memories of said plurality of circuit portions, reads the set values out of said memories of said plurality of circuit portions after the lapse of a predetermined time, and detects an abnormal state by comparing the set value sent to said plurality of circuit portions with the read out set value.

2 more elements

Dependencies are inferred from the claim text.

Electronic equipment and method of controlling electronic equipment

Life of this patent

Electronic equipment and method of controlling electronic equipment

Life of this patent

Abstract

Claims12