초록 ▼

A digital information storage and read-out system in which digital elevation and cultural terrain data is read from a magnetic tape in compressed form into an intermediate memory which operates as a speed buffer memory. The data in the intermediate memory is read out to a reconstruction processor in

A digital information storage and read-out system in which digital elevation and cultural terrain data is read from a magnetic tape in compressed form into an intermediate memory which operates as a speed buffer memory. The data in the intermediate memory is read out to a reconstruction processor in which the compressed data is reconstructed and applied to a scene memory. A nagivation computer determines the instantaneous position of a vehicle with respect to the terrain and controls the reading of data into the scene memory in blocks with the vehicle position occupying a center of scene location. In order to provide a heading up display of the terrain, the data in the scene memory is read out at an angle to its north-up storage orientation and interlaced scanning of pixel data in the scene memory improves resolution and enhances line display. The data read out of the scene memory controls the generation of video control signals to effect a display of the elevation and cultural data as a moving map related to the vehicle position.

대표청구항 ▼

For use with a digital data base representative of at least a two dimensional pattern of information, an apparatus for controllably processing data from the digital data base, comprising: memory means for storing, in addressable memory locations thereof, at least a portion of the digital data repres

For use with a digital data base representative of at least a two dimensional pattern of information, an apparatus for controllably processing data from the digital data base, comprising: memory means for storing, in addressable memory locations thereof, at least a portion of the digital data representing at least a selected part of the pattern such that, as stored in said memory, said portion of digital data has a reference orientation; control means for transferring data from the digital data base to said memory means; and read-out control means for controllably accessing said addressable memory locations of said memory means so as to cause data representing said pattern to be read out therefrom at an effective orientation which is rotated with respect to said reference orientation, so that the resulting pattern has said rotated orientation, and wherein said control means includes intermediate memory means for storing at least a portion of the data transferred thereto from said digital data base prior to application to said memory means, and wherein said addressable memory locations of said memory means comprises a plurality of memory storage segments, and wherein said control means includes memory management control means for transferring portions of the data representing selected parts of the pattern of information to first selected ones of said memory storage segments for storage therein and said read-out control means includes means for reading out at least a portion of the data from second selected ones of said memory storage segments to obtain the resulting read-out pattern, and wherein said memory management control means includes means for transferring data to said memory means in addressable segments which form a part of the pattern of information, including means for storing said segments in locations of said memory means which are not necessarily in correspondence with the pattern of information, and directory means for storing the correspondence between selected locations in said memory means and the position of each segment in the pattern.