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US 2011/0084685 A1Published application
Power Saving for Hot Plug Detect
AssigneeQUALCOMM Incorporated
InventorsCheng Zhong, Nam V. Dang, Hung Q. Vuong, Xiaohua Kong
Life of this patent
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Abstract
Power saving for hot plug detect (HPD) is disclosed. In a particular embodiment, a method includes detecting, at a source device that is connectable to a sink device, a connection of the source device to the sink device via a connector. The source device includes a DC voltage source and the connection is detected without consuming power from the DC voltage source.
Claims43
A method, comprising:
- detecting, at a source device connectable to a sink device, the source device including a direct current (DC) voltage source, a connection of the source device to the sink device via a connector without consuming power from the DC voltage source.
An electronic device, comprising:
- a direct current (DC) voltage source coupled to a DC interface;
- a receiver sense circuit configured to detect a connection of the electronic device to a sink device via a connector without consuming power from the DC voltage source;
- a controller coupled to a hot plug detect (HPD) interface, the controller configured to:
- receive a detection signal from the receiver sense circuit;
- selectively control a switch to enable and disable the DC voltage source based on the detection signal;
- detect an HPD signal at the HPD interface after enabling the DC voltage source;
- and
- disable the receiver sense circuit in response to detecting the HPD signal.
5 more elements
An apparatus comprising:
- means for detecting a connection of the apparatus to a sink device via a connector without consuming power from a DC voltage source within the apparatus;
- means for receiving a detection signal from the means for detecting the connection;
- means for selectively controlling a switch to enable and disable a connection to the DC voltage source;
- means for detecting a presence of a hot-plug detect (HPD) signal at an HPD interface of the apparatus;
- and
- means for disabling the receiver sense circuit when the presence of the HPD signal is detected.
3 more elements
A method comprising:
- a first step for detecting a connection of a source device to a sink device via a connector at the source device without consuming power from a DC voltage source of the source device;
- and
- a second step for enabling the DC voltage source in response to detecting the connection.
A computer-readable tangible medium storing instructions executable by a processor, the instructions comprising:
- instructions that are executable by the processor to detect a connection of a source device to a sink device via a connector at the source device without consuming power from a DC voltage source of the source device.
A method comprising:
- receiving design information representing at least one physical property of a semiconductor device, the semiconductor device comprising:
- a direct current (DC) voltage source coupled to a DC interface;
- a receiver sense circuit configured to detect a connection of the semiconductor device to a sink device via a connector without consuming power from the DC voltage source;
- a controller coupled to a hot plug detect (HPD) interface, the controller configured to:
- receive a detection signal from the receiver sense circuit;
- selectively control a switch to enable and disable the DC voltage source based on the detection signal;
- detect an HPD signal at the HPD interface after enabling the DC voltage source;
- and
- disable the receiver sense circuit in response to detecting the HPD signal;
- and
- transforming the design information to comply with a file format;
- and
- generating a data file including the transformed design information.
10 more elements
A method comprising:
- receiving a data file comprising design information corresponding to a semiconductor device;
- and
- fabricating the semiconductor device according to the design information, wherein the semiconductor device comprises:
- a direct current (DC) voltage source coupled to a DC interface;
- a receiver sense circuit configured to detect a connection of the semiconductor device to a sink device via a connector without consuming power from the DC voltage source;
- a controller coupled to a hot plug detect (HPD) interface, the controller configured to:
- receive a detection signal from the receiver sense circuit;
- selectively control a switch to enable and disable the DC voltage source based on the detection signal;
- detect an HPD signal at the HPD interface after enabling the DC voltage source;
- and
- disable the receiver sense circuit in response to detecting the HPD signal.
8 more elements
A method comprising:
- receiving design information comprising physical positioning information of a packaged semiconductor device on a circuit board, the packaged semiconductor device comprising:
- a direct current (DC) voltage source coupled to a DC interface;
- a receiver sense circuit configured to detect a connection of the semiconductor device to a sink device via a connector without consuming power from the DC voltage source;
- a controller coupled to a hot plug detect (HPD) interface, the controller configured to:
- receive a detection signal from the receiver sense circuit;
- selectively control a switch to enable and disable the DC voltage source based on the detection signal;
- detect an HPD signal at the HPD interface after enabling the DC voltage source;
- and
- disable the receiver sense circuit in response to detecting the HPD signal;
- and
- transforming the design information to generate a data file.
8 more elements
A method comprising:
- receiving a data file comprising design information comprising physical positioning information of a packaged semiconductor device on a circuit board;
- and
- manufacturing the circuit board configured to receive the packaged semiconductor device according to the design information, wherein the packaged semiconductor device comprises:
- a direct current (DC) voltage source coupled to a DC interface;
- a receiver sense circuit configured to detect a connection of the semiconductor device to a sink device via a connector without consuming power from the DC voltage source;
- a controller coupled to a hot plug detect (HPD) interface, the controller configured to:
- receive a detection signal from the receiver sense circuit;
- selectively control a switch to enable and disable the DC voltage source based on the detection signal;
- detect an HPD signal at the HPD interface after enabling the DC voltage source;
- and
- disable the receiver sense circuit in response to detecting the HPD signal.
8 more elements
Dependencies are inferred from the claim text.