USB sharer for use with an external USB device

Details USB sharer for use with an external USB device USB sharer for use with an external USB device

2005-08-23

2005-08-23

Ray, Gopal C. (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C710S063000

Reexamination Certificate

active

06934793

ABSTRACT:
A computer accessory device—USB share is comprised of a multiplexer, which is connected to a computer host; a human interface device (HID) chip, which is connected to one output end of the multiplexer; a device output end, which is connected to another output end of the multiplexer; and a busyness detection module, which is connected to the middle of the HID chip and the device output end. The USB sharer may reach a sharing function of “N to 1” by applying N−1 sets of “2 to 1” sharer. Wherein, at least one “2 to 1” sharer's output end is connected to the device output end and, for other N−2 sets of “2 to 1” sharer, of which at least one output end is connected to the input end of another “2 to 1” sharers.

REFERENCES:
patent: 5339096 (1994-08-01), Beaufort et al.
patent: 5790776 (1998-08-01), Sonnier et al.
patent: 6233702 (2001-05-01), Horst et al.
patent: 6385203 (2002-05-01), McHale et al.
patent: 6496940 (2002-12-01), Horst et al.
“Novel output buffer designs for universal serial bus IC applications” by Hwang-cherng Chow, Chen-Yi Huang, Chih-Hong Chang (abstract only) Publication date:Dec. 17-20, 2000.

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