Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 5289168 | Image handling apparatus and controller for selecting display mode Image handling apparatus comprises a store (22) for storing digital data defining an image; a monitor (30) connected to the store for displaying the image; a control system (1,2) for controlling the image display; and a digitizing tablet (5) defining an a... | 02/22/1994 |
| 5278676 | Method and apparatus for cyclic scanning of images Image scanning apparatus comprises a radiation source to generate a radiation beam, a support on which an original image is mounted in use so that the radiation beam is incident, in use, on the original image, the support and the beam being continuously m... | 01/11/1994 |
| 5266373 | Optical scanning of images An assembly that can be optically scanned and that comprises a transparency that includes an image and that is carried by a transparent support to which it is secured and with which it is in intimate fluid contact wherein the fluid contact is provided by ... | 11/30/1993 |
| 5254977 | Color display A method of displaying a selected section of an N-dimensional color space uses two memories (14,16). The first memory (14) stores memory addresses of the second (16). The second memory (16) stores data defining color at addresses corresponding to the sele... | 10/19/1993 |
| 5239292 | Computer graphics system electronically simulating painting on canvas A graphics system comprises an input device, and a computer for detecting changes in the position of the input device relative to a surface, and a monitor (63) for displaying patterns which follow the movement of the input device. The computer calculates ... | 08/24/1993 |
| 5227770 | Electronic boundary generation A method and apparatus for generating an electronic representation of a boundary, particularly for use in generating an outline around a displayed image. The apparatus comprises a screen (30) and a control system (1,2). The control system enables a cursor... | 07/13/1993 |
| 5220432 | Methods and apparatus for half-tone imaging utilizing a rotated half-tone dot map An apparatus for controlling the exposure of a record medium (4) to a radiation beam (3) during relative scanning movement between the medium and the beam to record half-tone image separations at particular screen angles, includes a control signal generat... | 06/15/1993 |
| 5196922 | Digital image generation A method of generating a representation of a subsidiary colored image initially contained within a color content of pixels of the image comprises defining a control data array. This control data array (9) defines, for at least those pixels in the image co... | 03/23/1993 |
| 5185596 | Electronic image modification An apparatus for electronically modifying the appearance of an image stored in the form of digital data defining the color content of the image comprises a store (8) for storing sets of coordinates defining positions around the edge of the image and, for ... | 02/09/1993 |
| 5172423 | Methods and apparatus for defining contours in colored images A method and apparatus for defining a contour in a colored image to separate a selected region having a selected color or colors from other regions when the color component content of each pixel of the image is defined by digital data at a first resolutio... | 12/15/1992 |
| 5162926 | Registration method A sheet carrying assembly comprises a platen and a carrier secured to the platen by a vacuum. The registration of the carrier on the platen is achieved by use of magnets. The magnets have fixed positions on the platen so that the carrier will always be pr... | 11/10/1992 |
| 5151686 | Electronic brush generation Apparatus for creating or modifying an electronically represented image comprising a display (30); a store (11) for storing arrays of data values defining electronic brushes; an input device (5) to enable an operator to control movement of a previously de... | 09/29/1992 |
| 5140314 | Image assembly Apparatus for assembling images together in which each image is defined by respective pluralities of sets of data values, each set corresponding to a group of pixels of the image, the groups being arranged in a regular array across the image whereby the s... | 08/18/1992 |
| 5131056 | Electronic airbrushing A method of simulating airbrushing of an image electronically comprises generating a set of pixel values from a stored set. The pixels define the area of an airbrush and the color content is modified by selecting sets in sequence, then combining the image... | 07/14/1992 |
| 5121223 | Method and apparatus for generating a binary representation of an image A method for generating a binary representation of an image represented in half-tone form is described in which the image is scanned and sampled, and in which each pixel corresponding to a sample of the image is assigned one of two colors. The method comp... | 06/09/1992 |
| 5111286 | Image processing Apparatus for interactively modifying an image represented by digital data defining the color content of pixels in the image in terms of color components defining a first color space comprises a store (1) for storing the original image; a look-up table (2... | 05/05/1992 |
| 5057939 | Data compression A method of compressing digital image or image-like pixel data. The method comprises carrying out the following steps on small blocks of pixels: a) determining the differences between digital values of adjacent pixels in the block to define respective link wei... | 10/15/1991 |
| 5040233 | Data compression by discarding portions of data A method of modifying a digital representation of an image in which digital data defines the content of pixels of the image. The method comprises a) determining whether a predetermined degree of compression can be achieved if data defining a block of pixels is... | 08/13/1991 |
| 5027151 | Film transparency holder A method of mounting a transparency for use in an input scanner comprises first inserting a transparency into an envelope. Within the envelope a film of liquid of substantially the same refractive index as the transparency is spread over the transparency.... | 06/25/1991 |
