Low power consuming operating device for digital signal processing using a probability distribution of input digital signals and predetermined output signals

摘要

There is provided a low power consuming operating device for digital signal processing, which analyses a digital signal to be operated, determines whether the digital signal is a frequently encountered specified signal, and outputs a previously calculated value when the digital signal is the specified signal. The operating device has an external input portion for receiving digital data, temporarily storing the received digital data, and outputting the stored data, a specified signal sensing portion for determining whether the digital data received from the external input portion is a specified input and outputting the determination result, an internal input portion for outputting the digital data from the external input portion in response to the determination result, an operating portion for operating on the data received from the internal input portion, and an external output portion for selectively outputting either the output of the operating means or a value corresponding to the specified input, in response to the determination result, as the final operation result of the digital data. Thus, power consumption is reduced, average operation speed is increased, and operational failures caused by noise in an internal control signal can be prevented when a specified signal is sensed using a self-timed method.