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A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
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| Number | Title | Issue Date |
| 7180555 | System and method for producing an image with a screen using erase (off) and image (on) light sources An image system includes a beam generator and a screen having a region with an adjustable brightness. The beam generator directs first and second electromagnetic beams onto the region. The first beam changes the brightness of the region according to a first polarity... | 02/20/2007 |
| 7180556 | System and method for capturing, transmitting, and displaying an image An optical image system includes an image projector and an image generator. The image projector has regions with adjustable brightness levels. The image generator generates an image received from a remote location on the image projector by directing first and second... | 02/20/2007 |
| 5543855 | Image processing method and apparatus with error diffusion An image processing apparatus which enables error diffusion in interlaced-scanning image data. An input unit inputs image data formed by interlaced-scanning, and an adder adds error data to the input data. A binarization circuit performs level-conversion ... | 08/06/1996 |
| 5386253 | Projection video display systems A projection system of the kind in which beams of light are projected by a projector onto a screen and the beams are modulated by electronic video information is characterized in that means are provided to vary the intensity of the light falling on differ... | 01/31/1995 |
| 4951150 | Optical projection system An optical projection system which in one implementation reflects illumination from a source off of an electro-optic imaging member in the shape of a plate. The imaging member in the preferred embodiment is an electro-optic ceramic plate, such as PLZT, wh... | 08/21/1990 |
