US 11,775,695 B2Granted

Image redaction for a display device

AssigneeInternational Business Machines Corporation

InventorsClive Harris, Timothy Andrew Moran, Caroline Sarah Courtenay McNamara, Caroline J. Thomas, Natasha Katherine McKenzie-Kelly, Melita Saville, Abigail Rose Bettle-Shaffer

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Abstract

A system may be used to redact an image to be displayed by a display device. By intercepting a signal before an image of the signal is displayed on a display device, the display of confidential, sensitive and inappropriate information may be suppressed. More specifically, the image of the signal is analyzed using a content recognition algorithm to identify items of content, which may be redacted by modifying the signal. Using this concept, the image may be redacted by the display device, or by a port or adapter between a signal generator and the display device, without relying on redaction software local to the signal generation system.

Claims16

Dependent claims

A method comprising:

receiving, by a dedicated display device, a signal comprising an image to be displayed by the dedicated display device before the image is displayed by the dedicated display device,
wherein the signal is received from a client computing device,
wherein the dedicated display device is external to the client computing device;
converting, by the dedicated display device, the image into a virtual bitmap display;
analyzing, by the dedicated display device, the virtual bitmap display based on a content recognition algorithm to identify an object in the virtual bitmap display;
determining, by the dedicated display device, to redact the object based on a ruleset;
determining that a processing time required to analyze the virtual bitmap display and modify the signal is longer than a refresh rate of the dedicated display device;
looping, based on the determination the processing time required to analyze the virtual bitmap display and modify the signal is longer than the refresh rate of the dedicated display device, an earlier frame on the dedicated display device;
and
modifying, by the dedicated display device, the signal to redact the object from the virtual bitmap display responsive to determining to redact the object.

7 more elements

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processors to perform a method, the method comprising:

receiving by a dedicated display device, a signal comprising an image to be displayed by the dedicated display device before the image is displayed by the dedicated display device,
wherein the signal is received from a client computing device,
wherein the dedicated display device is external to the client computing device;
converting, by the dedicated display device, the image into a virtual bitmap display;
analyzing, by the dedicated display device, the virtual bitmap display based on a content recognition algorithm to identify an object in the virtual bitmap display;
determining, by the dedicated display device, to redact the object based on a ruleset;
determining that a processing time required to analyze the virtual bitmap display and modify the signal is longer than a refresh rate of the dedicated display device;
looping, based on the determination the processing time required to analyze the virtual bitmap display and modify the signal is longer than the refresh rate of the dedicated display device, an earlier frame on the dedicated display device;
and
modifying, by the dedicated display device, the signal to redact the object from the virtual bitmap display responsive to determining to redact the object.

7 more elements

Dependencies are inferred from the claim text.