Sideband signal for usb with interrupt capability
AssigneeIgt
InventorsFloyd Goldstein, John Goodman, Dung Hua
Life of this patent
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Abstract
The invention provides for a sideband signal for the USB that has real-time interrupt capabilities. A system and method for hardware detection of an interrupt signal provides for the ability to superimpose a high frequency interrupt signal on a USB power line for transmission to a controller. Alternatively, an overcurrent flow may be generated from a peripheral device and detected by an overflow current detector on the USB. In response, the overflow current detector may output an interrupt/overflow current detection signal to the controller.
Claims19
A system to detect an interrupt signal on a universal serial bus (USB), comprising:
- at least one peripheral device;
- a controller coupled to the at least one peripheral device via a USB, the USB having at least one power line;
- wherein the at least one peripheral device is configured to detect an interrupt event and to superimpose high frequency interrupt communication signals on the at least one power line for transmission to the controller in real-time, and
- wherein the controller is configured to transmit high frequency communication signals to the at least one peripheral device on the at least one power line.
A gaming machine, comprising:
- a master gaming controller to generate a game of chance;
- at least one peripheral device coupled to the master gaming machine via a USB, the USB having at least one power line;
- wherein the at least one peripheral device is configured to detect an interrupt event and to superimpose high frequency interrupt communication signals on the at least one power line for transmission to the master gaming controller in real-time, and
- wherein the master gaming controller is configured to transmit high frequency communication signals to the at least one peripheral device on the at least one power line.
A method to detect an interrupt in a gaming machine, comprising:
- detecting an interrupt event by at least one peripheral device;
- generating a high frequency interrupt signal by the at least one peripheral device in response to the interrupt event;
- superimposing the high frequency interrupt signal over a power line of a universal serial bus (USB);
- and
- transmitting the high frequency interrupt signal to a master gaming controller over the power line in real-time.
Dependencies are inferred from the claim text.