Texas Instruments Corporation

Yoon J Lee

Brian H Quach

Win Naing Maung

Wesley Ray

John Mitchell Perry

Brian Parten

Lee Myers

Pasupathy Visuvanadan

Jeffrey H Enoch

In described examples, a method includes receiving, by a power delivery (PD) controller, a first sensed voltage, while the PD controller is producing a first control signal and in response to determining that the first sensed voltage passes a threshold voltage, starting, by the PD controller, a timer, where the threshold voltage is a first threshold, a second threshold, or a third threshold. The method also includes during a time period of the timer, producing, by the PD controller, the first control signal and during the time period of the timer, receiving, by the PD controller, a second sensed voltage. Additionally, the method includes after expiration of the timer, producing, by the PD controller, a second control signal based on the second sensed voltage.

USB power delivery management

In described examples, a source circuit can have an input and an output. The input can be adapted to be coupled to an input voltage source configured to provide an input voltage. The source circuit can be configured to output power at an output based on a power delivery mode. The source circuit can include a timer and power delivery (PD) controller. The PD controller can be configured to control the power delivery mode responsive to the input voltage and the timer. The PD controller can be further configured to set a respective power delivery mode and initiate the timer for a timer duration based on the input voltage relative to an input voltage threshold. The PD controller can be further configured to continue operating in the respective power delivery mode for the timer duration.

Method and systems are disclosed for transporting simultaneous video and bus protocols over a single cable. At least some of the illustrative embodiments are systems including a main switch configured to operate in an enhanced mode where the main switch is configured to transfer data from a first data source and a second data source to a cable, operate in a default mode where the main switch is configured to transfer data from the second data source to the cable without transferring data from the first data source; a multipurpose switch configured to operate in a handshake mode where the multipurpose switch transports handshake data between the cable and a digital logic, operate in a data mode where the multipurpose switch transports bus data between the cable and the second data source; and the digital logic programed to enable modes of operation of the multipurpose switch and the main switch.

Simultaneous video and bus protocols over single cable

A method includes generating, by a control unit of a first device, a handshaking signal to be transmitted to a second device via a second channel. The method further includes based on the handshaking signal being acknowledged by the second device, configuring, by the control unit, the second channel to communicate non-display data and configuring a first channel connecting the first device to the second device to selectively communicate either display data or non-display data; and based on the handshaking signal being not acknowledged by the second device, configuring, by the control unit, the first channel to communicate display data.

Growing community of inventors

Allen, TX, United States of America

Yoon J Lee