Patent ID: 6218862
Filing Date: 2001-04-17
Classification: G06F

Abstract:
A device for two-way digital transmission on a bus having at least one two-way line, said device comprising:a first pulling device, which pulls to a first logic level, connected to a first section of the line;a second pulling device, which pulls to the first logic level, connected to a second section of the line; andat least one two-way repeater connected between the first section and the second section, the repeater including:a third pulling device, which pulls to a second logic level, connected to the first section;a fourth pulling device, which pulls to the second logic level, connected to the second section;a logic circuit connected to the first section and the second section, the logic circuit automatically preventing the third pulling device from being active whenever the fourth pulling device is active and automatically preventing the fourth pulling device from being active whenever the third pulling device is active, the logic circuit receiving a conditional signal; anda conditional circuit generating the conditional signal in order to selectively isolate the first and second sections of the line so that transmission between the first and second sections is not possible regardless of the levels on the first and second sections, the conditional circuit being controlled by an electronic circuit that is connected to the first section.