US 10,503,228 B2Granted

Packet-based digital display interface signal mapping to micro serial interface

AssigneeSTMicroelectronics S.r.l.

InventorAlan Osamu Kobayashi

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Abstract

A passive cable adaptor for connecting a data source device with a display device is described. The adaptor has a packet-based interface connector at one end, the connector having a positive main link pin, a negative main link pin, a positive auxiliary channel pin, and a negative auxiliary channel pin. At the other end is a micro serial interface connector, wherein multimedia content is transmitted over the cable adaptor and electrical power is supplied over the cable adaptor simultaneously. The cable adaptor has an auxiliary and hot plug detect (HPD) controller utilized to map the auxiliary channel and HPD signals of the packet-based digital display to the micro serial interface ID signal.

Claims16

Dependent claims

A multimedia data source device, comprising:

a memory to store power level information describing operating power levels supported by the multimedia data source device;
power level determination circuitry to negotiate a power level to be received from an external display device into the multimedia data source device to enable operation of the multimedia data source device at a negotiated power level, the power level negotiated based on the stored information;
a multimedia data processor to provide multimedia data and to operate using power at the negotiated power level from the external display device;
and
an interface system to couple with the external display device, the interface system including:
a main data link to transmit the multimedia data between the multimedia data source device and the external display device;
a power connector to receive the power at the negotiated power level from the external display device when said external display device is connected with the multimedia data source device;
and
an auxiliary channel to transmit sideband data between the external display device and the multimedia data source device, said sideband data including power negotiation messages, wherein the power level determination circuitry enables the multimedia data source device to:
obtain from the external display device power level information concerning power levels supported by the external display device;
compare the power level information obtained from the external display device with the power level information stored in the memory of the multimedia data source device;
and
negotiate, based on the compared power level information, a power level for use that is a power level supported by both the external display device and by the multimedia data source device.

10 more elements

A method to enable transmission of negotiated power to a multimedia data source device from an external display device connected to the multimedia data source device, the method comprising:

storing, on the multimedia data source device, power level information describing operating power levels supported by the multimedia data source device;
establishing a connection between the multimedia data source device and the external display device, the established connection including a power connection and an auxiliary data connection;
negotiating a power level for power transmission from the external display device to the multimedia data source device to enable operation of the multimedia data source, wherein the negotiating includes:
obtaining from the external display device power level information describing power levels supported by the external display device;
comparing the power level information obtained from the external display device with the power level information stored on the multimedia data source device;
and
selecting, based on the compared power level information, a power level for use that is a power level supported by both the external display device and by the multimedia data source device;
and
supplying power at the selected power level from the external display device to the source device.

6 more elements

A non-transitory computer-readable storage medium whose stored contents configure a multimedia data source device that is connected to an external display device to perform a method, the method comprising:

negotiating a level of power that the external display device will supply to the multimedia data source device to enable operation of the multimedia data source, the negotiating including:
obtaining from the external display device power level information describing power levels supported by the external display device;
retrieving stored power level information describing operating power levels supported by the multimedia data source device;
comparing the power level information obtained from the external display device with the power level information stored on the multimedia data source device;
and
selecting, based on the compared power level information, a power level for use that is a power level supported by both the external display device and by the multimedia data source device;
and
receiving power at the selected level of power from the external display device.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/944,609Filed 18 Nov 2015 · division
Priority: 3 Feb 2010
Published: US 2016/0070325 A110 Mar 2016
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G06F 1/266
Power supply means, e.g. regulation thereof: arrangements to supply power to external peripherals either directly from the computer or under…
G06F 1/26
Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00: power supply means, e.g. regulation thereof
G06F 13/102
Program control for peripheral devices: where the program performs an interfacing function, e.g. device driver
G06F 13/4081
Electrical coupling: live connection to bus, e.g. hot-plugging

Family

Application61/300,929Us provisional application · filed 3 Feb 2010
Application61/318,727Us provisional application · filed 29 Mar 2010
Application61/325,734Us provisional application · filed 19 Apr 2010
Application61/365,195Us provisional application · filed 16 Jul 2010
Application12/862,087Parent of this division · filed 24 Aug 2010
Application14/045,070Parent of this division · filed 3 Oct 2013
US 8,578,031 B2Parent of this division · filed 5 Nov 2013
US 2016/0070325 A1Pre-grant publication · published 10 Mar 2016
US 9,218,311 B2Parent of this division
US 2011/0191480 A1Published application
US 2014/0032945 A1Published application
US 10,503,228 B2This patent

From the US filing history. Foreign family members aren’t listed.

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