Display apparatus and display system
AssigneeSharp Display Technology Corporation
InventorsTatsuya Hayashi, Kohji Saitoh, Kazuhisa Yoshimoto
Life of this patent
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Abstract
A display apparatus includes a timing control circuit and a power converter circuit. In response to reception of a control signal used to transition from a display mode to a pause mode from a host controller, the timing control circuit transmits a pause signal to the power control circuit. The power control circuit converts an input voltage to an output voltage at a first switching frequency in the display mode before receiving the pause signal and converts the input voltage to the output voltage at a second switching frequency in the pause mode after receiving the pause signal from the timing control circuit.
Claims4
A display apparatus comprising:
- a display panel;
- a display driving circuit that supplies the display panel with a driving signal;
- a timing control circuit that supplies the display panel with an image signal and the display driving circuit with a timing signal;
- and
- a power converter circuit that converts input power at an input voltage into power at an output voltage and supplies the power at the output voltage to at least one of the display panel, the display driving circuit and the timing control circuit,
- wherein in response to reception of a control signal from a host controller with the control signal used to transition the display panel from a display mode causing the display panel to perform displaying to a pause mode causing the display panel to stop displaying, the timing control circuit transmits a pause signal to the power converter circuit, and
- wherein the power converter circuit converts the input voltage to the output voltage at a first switching frequency in the display mode before receiving the pause signal and
- converts the input voltage to the output voltage at a second switching frequency lower than the first switching frequency in the pause mode after receiving the pause signal from the timing control circuit.
A display system comprising:
- a display apparatus including a display panel;
- and
- a host controller that transmits to the display apparatus a control signal that transitions the display panel from a display mode causing the display panel to perform displaying to a pause mode causing the display panel to stop displaying,
- wherein the display apparatus includes:
- a display driving circuit that supplies the display panel with a driving signal;
- a timing control circuit that supplies the display panel with an image signal and the display driving circuit with a timing signal;
- and
- a power converter circuit that converts input power at an input voltage into power at an output voltage and supplies the power at the output voltage to at least one of the display panel, the display driving circuit and the timing control circuit,
- wherein in response to reception of the control signal from the host controller with the control signal used to transition the display panel from the display mode causing the display panel to perform displaying to the pause mode causing the display panel to stop displaying, the timing control circuit transmits a pause signal to the power converter circuit, and
- wherein the power converter circuit converts the input voltage to the output voltage at a first switching frequency in the display mode before receiving the pause signal and
- converts the input voltage to the output voltage at a second switching frequency lower than the first switching frequency in the pause mode after receiving the pause signal from the timing control circuit.
Dependencies are inferred from the claim text.