Oscillating video refresh
AssigneeGoldman, Sachs & Co.
InventorsMichael Mattioli, Frederick Biga
Life of this patent
Estimating the term…
Abstract
A system and a method are disclosed describing a mechanism for preventing recording of security sensitive media content when that content is displayed on a screen. The mechanism includes selecting two refresh rates for a display and oscillating between those two refresh rates thereby preventing a recording device's recording frame rate from synchronizing with the display device's refresh rate. As a result, anything recorded by the recording device will be distorted.
Claims20
A method for preventing recording of a display screen, the method comprising:
- determining a request to display security sensitive media content;
- responsive to the request, determining a plurality of different refresh rates for displaying the security sensitive media content;
- and
- transmitting at least one command to a display device to change a previously set refresh rate to a first refresh rate from the plurality of different refresh rates, and to change from the first refresh rate to a second refresh rate from the plurality of different refresh rate responsive to a time interval elapsing.
A non-transitory computer-readable medium comprising memory with instructions encoded thereon for preventing recording of a display screen, the instructions causing one or more processors to perform operations when executed, the instructions comprising instructions to:
- determine a request to display security sensitive media content;
- responsive to the request, determine a plurality of different refresh rates for displaying the security sensitive media content;
- and
- transmit at least one command to a display device to change a previously set refresh rate to a first refresh rate from the plurality of different refresh rates, and to change from the first refresh rate to a second refresh rate from the plurality of different refresh rate responsive to a time interval elapsing
A method of a display system for preventing recording of a display screen of the display system, the method comprising:
- displaying, by the display system, non-security sensitive media content at a previously set refresh rate;
- receiving, by the display system, a first command to change from the previously set refresh rate to a first refresh rate for displaying security sensitive media comment;
- displaying, by the display system, the security sensitive media content at the first refresh rate;
- responsive to a threshold amount of time elapsing since receiving the first command, receiving, by the display system, a second command to change the first refresh rate to the second refresh rate;
- and
- displaying, by the display system, the security sensitive media content at the second refresh rate.
Dependencies are inferred from the claim text.