发明名称 |
Secure data transfer on a handheld communications device |
摘要 |
A handheld communications device for transmitting an encryption key is provided. The device comprises a display device, and a data processor. The data processor of the handheld communications device is in communication with the display device. The data processor is configured to generate an encryption key, and to vary a visual output of the display device over time in accordance with a bit sequence of the encryption key. The varying visual output comprises a sequence of colors and/or brightness levels output by the display device. |
申请公布号 |
US8798266(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US201213690471 |
申请日期 |
2012.11.30 |
申请人 |
BlackBerry Limited |
发明人 |
Drader Marc A.;Robinson James Alexander;Purdy Michael Lorne |
分类号 |
H04L9/00;H04L9/08 |
主分类号 |
H04L9/00 |
代理机构 |
McCarthy Tétrault LLP |
代理人 |
McCarthy Tétrault LLP |
主权项 |
1. A handheld communications device comprising:
a display device having a backlight; and a data processor in communication with the display device, the data processor being configured to: generate an encryption key, the encryption key comprising a bit sequence; vary a predominant colour in an image over a period of time in an output generated on the display device to transmit a first part of the encryption key from the handheld communications device; and generate either a substantially solid white or gray image on the display and vary a sequence of brightness levels output by the backlight to transmit a second part of the encryption key. |
地址 |
Waterloo, Ontario CA |