초록 ▼

For voltage on a digital signal line whose load capacitance is comparatively large as in a bus line of a CMOS integrated circuit, a detection is made that said voltages enter into a specified voltage range between the ground voltage and the power supply voltage, then based on such detection the volt

For voltage on a digital signal line whose load capacitance is comparatively large as in a bus line of a CMOS integrated circuit, a detection is made that said voltages enter into a specified voltage range between the ground voltage and the power supply voltage, then based on such detection the voltage on said signal line is raised up or pulled down rapidly by a current injection means or a current ejection means, respectively, thereby the signal propagation delay is reduced.

대표청구항 ▼

A digital signal transmission circuit comprising: a detection means for receiving voltages of a signal line for transmitting digital voltage signals and detecting whether an instantaneous signal line voltage is in a specified voltage range which is between a predetermined first voltage and a predete

A digital signal transmission circuit comprising: a detection means for receiving voltages of a signal line for transmitting digital voltage signals and detecting whether an instantaneous signal line voltage is in a specified voltage range which is between a predetermined first voltage and a predetermined second voltage, said second predetermined voltage being higher than said first predetermined voltage, lower than said predetermined first voltage, or higher than said predetermined second voltage, and a current injection means which injects current into said signal line under control of the output of said detection means, in a manner that said current injection means injects currents into said signal line when said signal voltage on said signal line is in said specified voltage range, said current being injected after said signal voltage is detected to be within said specified voltage range and the signal voltage has increased from a voltage lower than said first predetermined voltage.