Patent ID: 9213804
Filing Date: 2015-12-15
Classification: G06F,G06Q,G08B,H04L,H04M

Abstract:
1. A method for securing displayed information comprising: establishing a shared information session between a first data processing device including a first memory and a second data processing device including a second memory for storing and a display for displaying the shared information; maintaining session awareness indicating that both the first and second devices are alive in the session wherein the session awareness is maintained by a heartbeat signal sent at regular periods from the first device to the second device without the first device receiving a second heartbeat signal from the second device; inputting displayed information into the second data processing device during the session, including input data received from the first device, producing displayed input information stored in the second memory; responsive to the session awareness indicating the session is alive between the first and second device, periodically sharing the displayed input information from the second memory of the second device to the first device for storage in the first memory; and responsive to the session awareness indicating the session has ended between the first and second device, deleting the displayed input information in the second memory, wherein the second data processing device is an electronic whiteboard.