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| Number | Title | Issue Date |
| 4896257 | Computer system having virtual memory configuration with second computer for virtual addressing with translation error processing A computer system including a first computer unit processing user's tasks, a second computer unit performing a halt operation for a virtual memory access, a main memory storing a plurality of virtual accessing data, a buffer memory unit temporarily storin... | 01/23/1990 |
| 4849747 | Display data transfer control apparatus applicable for display unit Disclosed is a display data transfer control apparatus in which a line control memory which can preset raster count data for modifying, in units of lines, an address of a main storage storing a character font to be displayed and character attribute data a... | 07/18/1989 |
| 4837564 | Display control apparatus employing bit map method A display control apparatus using a bit map method, for controlling character attribute data, such as an underline and an overline. In the apparatus, a line control memory is arranged to preset information of character attributes in units of lines of char... | 06/06/1989 |
| 4827251 | Display control system with control of background luminance or color data A display control system with a control of background luminance or color data applicable for a personal computer with a paper-white type display device includes a character video signal generation unit, a background luminance setting register, a video ena... | 05/02/1989 |
| 4801930 | Video information transfer processing system A video information transfer processing system in which the contents of a video memory are transferred to a main memory device. This system comprises a color extraction circuit including comparison circuits having logical circuits between the video memory... | 01/31/1989 |
| 4788655 | Condition code producing system A condition code producing system for an arithmetic unit which is controlled by a micro program and operate on binary floating point data produces a condition code having a plurality of bits and describing an attribute of the binary floating point data. T... | 11/29/1988 |
| 4471425 | A data transfer control system for multiple units on a common bus using a serially transmitted transfer permission signal A data-transfer controlling system comprising a bus-control unit connected to a common bus for controlling data transfer through the bus and a plurality of transmitter/receiver units for transferring data through the common bus to each other. The bus is c... | 09/11/1984 |
| 4384342 | System for reducing access time to plural memory modules using five present-fetch and one prefetch address registers A lookahead (guessahead) prefetching technique is used to reduce the average access time, for accessing memory modules when program addresses are modified into effective addresses for addressing the modules. A first memory address register stores the colu... | 05/17/1983 |
| 4334269 | Data processing system having an integrated stack and register machine architecture A data processing system includes three resources, i.e., a memory, a general purpose register file having a plurality of elements and a stack having a top. The system further includes a first mechanism for making the top of the stack correspond to at leas... | 06/08/1982 |
