Transceiver interface reduction
AssigneeNokia Mobile Phones Ltd.
InventorRichard Croyle
Life of this patent
Estimating the term…
Abstract
A transceiver interface (9) operating in accordance with the USB protocol includes a reduced number of pin outs by replacing the prior art logic pair of single ended outputs Vp and Vm (16,17) with a sole single ended zero output SeO (21). The interface (9) is intended to form part of a USB device incorporated in apparatus such as a cellular radio telephone (22).
Claims9
A transceiver interface connectable, in use, to a cable, the interface including an input for receiving a pair of signals from said cable, and a logic circuit connected to the input having a single logic output line, wherein the logic circuit has a first output state where both signals are below a predetermined level and a second output state where either or both signals exceed the predetermined level.
An interface as claimed in any preceding claim, wherein the second output state is indicative of a non-single ended zero state.
A transceiver interface connectable, in use, to a cable substantially as described herein with reference to FIG. 5 and FIG. 6 of the accompanying drawings.
Dependencies are inferred from the claim text.