Apparatus for increasing SCSI bus length by increasing the signal propagation or transmission of only two bus signals

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EP 0 688 024 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	17.04.1996 Bulletin 1996/16

(43)	Date of publication A2:
	20.12.1995 Bulletin 1995/51

(21)	Application number: 95304217.3

(22)	Date of filing: 16.06.1995

(51)	International Patent Classification (IPC)⁶: H01B 11/02, H01B 11/12

(84)	Designated Contracting States:
	DE FR GB IT NL

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Priority:

17.06.1994 US 261571
17.06.1994 US 262083

(71)	Applicant: DIGITAL EQUIPMENT CORPORATION
	Maynard, Massachusetts 01754-1499 (US)

(72)	Inventor:
	Ham, William E. Andover, Massachusetts 01810 (US)

(74)	Representative: Goodman, Christopher et al
	Eric Potter & Clarkson St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)

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References cited: :

(54)	Apparatus for increasing SCSI bus length by increasing the signal propagation or transmission of only two bus signals

(57) A cable used for transmitting the signals of a communications bus, such as a SCSI bus, having arbitration control signals subject to a wired-or glitch - such as the SCSI BSY signal. High propagation speed conductors increase the propagation speed of the BSY signal, resulting in a proportionate increase in the maximum length of the SCSI bus cable while maintaining adherence with the SCSI bus timing specifications.

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