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| Number | Title | Issue Date |
| 4701863 | Apparatus for distortion free clearing of a display during a single frame time A graphics display is cleared by apparatus forcing binary ZERO's into all locations of the bit map memories between successive vertical synchronization operations during a write refresh operation.... | 10/20/1987 |
| 4695967 | High speed memory access circuit of CRT display unit A high speed memory access circuit of a CRT display unit generates address signals from a memory cycle controller (20) based on an external write signal provided from the exterior and supplies the address signals to a frame memory (8) structured by dynami... | 09/22/1987 |
| 4679038 | Band buffer display system Pixel representations for each of a plurality of superimposed (or splitscreen) display portions are accumulated in a band buffer prior to being transferred to the display. The actual pixel representations are made available to the band buffer from an imag... | 07/07/1987 |
| 4677574 | Computer graphics system with low memory enhancement circuit Edge data is stored in a bit map, and clocked out pixel by pixel to form a pixel data stream for display. The edge data defines the regions or faces in the display image which have the same color. The face edges form transitions in the data stream (0-to-1... | 06/30/1987 |
| 4672368 | Raster scan digital display system A raster scan digital display system of the type in which consecutive locations in a buffer store are accessed to provide a picture element data stream, has means to increase the number of bits in each picture element data group. Each applied buffer store... | 06/09/1987 |
| 4660157 | Real time video perspective digital map display method A digital system for producing a real-time visual display in perspective of the terrain over which an aircraft is passing on the basis of compressed digital data stored on a cassette tape includes a perspective processor for transforming the addresses of ... | 04/21/1987 |
| 4648077 | Video serial accessed memory with midline load A semiconductor memory circuit includes memory arrays (10), (12), (14) and (16). Each of the memory arrays has associated therewith shift registers (34), (36), (38) and (40). Transfer gates (54) are disposed between the memory arrays and the associated sh... | 03/03/1987 |
| 4639890 | Video display system using memory with parallel and serial access employing selectable cascaded serial shift registers In a computer system, an improved memory circuit is provided for accomodating video display circuits with CRT screens having different resolutions. The memory circuit includes a bit-mapped RAM unit or chip having sufficient cells to accomodate any CRT scr... | 01/27/1987 |
| 4622547 | Memory access control apparatus In a microcomputer system with an asynchronous working central processing unit (CPU) and a cathode ray tube (CRT) display, a memory access control apparatus includes a memory, particularly a video RAM, a CRT controller connected to the CRT for accessing t... | 11/11/1986 |
| 4615018 | Method for writing data into a memory The present method for writing data into a memory allows to write data to be written into the memory as extending between the two adjacent addresses by a single write command supplied from a system bus side thereby allowing to increase the writing speed a... | 09/30/1986 |
| 4589020 | TV video data input apparatus A TV video data input apparatus samples and quantizes a video signal from a TV camera and feeds the quantized data into a computer. The input apparatus is provided with means for generating sampling clocks different from each other while selectively chang... | 05/13/1986 |
| 4587559 | Refreshing of dynamic memory A refreshable dynamic memory is used to drive a video display wherein each row of stored memory is accessed to provide one line of video. The memory row address counter is incremented a number of times during the horizontal retrace period to sequentially ... | 05/06/1986 |
| 4570161 | Raster scan digital display system In a raster scan digital display system, a display image is stored, as coded characters or a bit map, which is larger than the display image. In order to define an image, within the stored image, for display, the addressing system for the memory (or memor... | 02/11/1986 |
| 4546350 | Display apparatus An improved timing signal generating circuit for use in a raster-scanning CRT display apparatus. The circuit provides timing signals including memory control signals and clocks for the screen memory which stores data for characters and graphic patterns to... | 10/08/1985 |
| 4542376 | System for electronically displaying portions of several different images on a CRT screen through respective prioritized viewports A system for electronically displaying portions of several different images on a CRT screen comprises: a memory for storing a complete first image as several pixels in one section of the memory and a complete second image as several other pixels in anothe... | 09/17/1985 |
| 4504827 | Synthetic persistence for raster scan displays A method and apparatus for pseudorandomly decrementing the intensity of data that is displayed on a raster scan display screen. The apparatus essentially comprises means for selecting and partially decrementing data from an image memory and means for cont... | 03/12/1985 |
| 4471464 | Data processing system with programmable graphics generator A microprocessor based data processing system including a microprocessor, a memory unit, and a display unit is provided with a programmable graphics generator that transfers graphics information from the memory unit to the display unit in response to and ... | 09/11/1984 |
| 4430748 | Image thresholding system An image thresholding system employing a ROM look up table to make threshold decisions. A plurality of shift registers are used to convert a digital pixel input which includes the pixel to be processed to an address for use in addressing the ROM look up t... | 02/07/1984 |
| 4368461 | Digital data processing device A digital data processing device in which a color memory has a temporal data storage register at input/output interface thereof so that the data write-in or data read-out operations executed by a micro-processing unit (MPU) is always performed through the... | 01/11/1983 |
| 4262338 | Display system with two-level memory control for display units A display system employs electronic components for deriving and supplying display control signals, preferably in the form of multi-bit display control words, to control a display device formed of a plurality of individual display units preferably arranged... | 04/14/1981 |
| 4232311 | Color display apparatus A color display system has a color encoder which receives intensity signals via a video generator from a graphics generator as well as color signals. The color encoder processes the color and video signals for transmission to a display monitor which then ... | 11/04/1980 |
| 4217577 | Character graphics color display system Mixed color effects in a character graphics display system are achieved by providing font characters comprising several character cells with different patterns which can selectively be read simultaneously to different color registers, thereby determining ... | 08/12/1980 |
| 4206457 | Color display using auxiliary memory for color information Method and circuit for controlling the color of dot elements in a raster scan display having a data memory for storing the state (on or off) of dot elements which are mapped onto the raster scan display and a smaller auxiliary memory for storing color inf... | 06/03/1980 |
| 4204206 | Video display system The system includes a host computer having mass storage facilities together with a plurality of video display terminals having editing capabilities. Facilities are provided so that each editing terminal may on power-up communicate with the host computer w... | 05/20/1980 |
| 4183062 | Row addressing apparatus for a bistable display device A horizontal sync signal simultaneously addresses a second counter and a first memory addressing circuit comprising a frequency multiplier connected to a first counter. The output of the first counter addresses the first memory. A comparator compares the ... | 01/08/1980 |
| 4150364 | Parallel access memory system Memory system having contiguous storage locations with sequential addresses is partitioned into units to permit separate unit write-in and parallel unit read-out, operations. Each unit is responsive to common word address signals and unique combinations o... | 04/17/1979 |
| 4121283 | Interface device for encoding a digital image for a CRT display A display interface connected between a computer and a CRT device processes predetermined blocks of display data from predetermined locations in a memory of the computer to form pixels having predetermined characteristics in the display fields of the CRT ... | 10/17/1978 |
| 4117469 | Computer assisted display processor having memory sharing by the computer and the processor A computer terminal employs a CRT display, a micro-processor, and a random access memory which both stores character codes for information to be displayed on the CRT screen and serves as working storage for the processor. To generate a line of text across... | 09/26/1978 |
| 4103331 | Data processing display system A data processing display system comprises a display device capable of displaying a desired image and including a plurality of points each capable of being selectively illuminated. A main memory storage device is also included in the system and comprises ... | 07/25/1978 |
| 4094000 | Graphics display unit A display unit useful for displaying graphical information and specifically for composing items to be printed on a page. The display unit includes a dot matrix screen and a display memory for storing the information to be displayed. An addressing register... | 06/06/1978 |
| 4069511 | Digital bit image memory system A digital bit image memory system especially adapted for use in a newspaper-type composition and display system. At least one digital storage location is provided for each elemental display position. The memory system is formed with plural rows and column... | 01/17/1978 |
| 4016542 | Electronic notebook for use in data gathering, formatting and transmitting system A data gathering and transmitting system includes a portable data gathering device having a keyboard and an input/output connector, each operable for entering data into, and for providing access to data previously entered into, a random access memory. Dat... | 04/05/1977 |
| 3958225 | Apparatus and method for controlling a communications terminal A communications terminal control circuit is described which includes a preprogrammed memory. The memory provides a plurality of sequential instruction signals each serving to direct at least a selected operational sequence of the terminal. Two command an... | 05/18/1976 |
