Abstract: An electrically variable optical filter includes a first optical element including a first angled face and a second optical element including a second angled face. The second angled face is substantially parallel to and spaced apart from the first angled face. At least one separation actuator is affixed between the first optical element and the second optical element and is operable to change a separation distance D between the first angled face and the second angled face. Light waves transmitted through the first optical element are selectively transmitted through to or reflected away from the second optical element as a function of wavelength and the separation distance D.

Abstract: Image capture device control marks are automatically generated within a computer or printer and automatically printed on pages output from the printer. The control marks when detected by a control mark capable image capture device communicate information to the image capture device such as which areas of the printed page are text that require optical character recognition, which areas of the page are photos that require high-resolution full-color, which areas of the page are line drawings that require medium-resolution black and white, and which areas of the page are not to be scanned. Image capture device control marks may be configured in a wide range of sizes, styles, and locations on the printed page.

Abstract: A digital imaging device having a retractable lens may be turned off or on with the lens in the extended position, thereby saving battery power and facilitating rapid response to picture taking opportunities. The power saving and rapid response mode may be activated via a menu option, a predetermined gesture involving the power button, an alternative control element, or other suitable means.

Abstract: An electrically variable optical filter includes a first optical element including a first angled face and a second optical element including a second angled face. The second angled face is substantially parallel to and spaced apart from the first angled face. At least one separation actuator is affixed between the first optical element and the second optical element and is operable to change a separation distance D between the first angled face and the second angled face. Light waves transmitted through the first optical element are selectively transmitted through to or reflected away from the second optical element as a function of wavelength and the separation distance D.

Abstract: Image capture device control marks are automatically generated within a computer or printer and automatically printed on pages output from the printer. The control marks, when detected by a control mark capable image capture device communicate information to the image capture device such as which areas of the printed page are text that require optical character recognition, which areas of the page are photos that require high-resolution full-color, which areas of the page are line drawings that require medium-resolution black and white, and which areas of the page are not to be scanned. Image capture device control marks may be configured in a wide range of sizes, styles, and locations on the printed page.

Abstract: An image capturing device includes an electronic image sensor, a memory including a frame buffer, and a processor. The processor conducts an image capture of a digital image frame and extracts predetermined events in the digital image frame.