Rate Compensation for a Direct View Storage Tube Binary Rate Multiplier Vector Generator
Original Publication Date: 1985-Nov-01
Included in the Prior Art Database: 2005-Feb-19
The Binary Rate Multiplier (BRM) technique of generating images on an X/Y display device is quite effective for creating vectors. However, the application of the BRM technique to a Direct View Storage Tube (DVST) has special considerations. To create a visible image on the surface of a DVST, an electron beam deposits an electrical charge on the storage surface. For the image to have uniform visible intensity, the distribution of the electrical charge must be uniform. Thus, the rate of beam movement must be constant (assuming constant beam intensity). This is especially true for the "write-thru" mode of operation, where the images contain only enough energy to be visible, but not enough to be stored on the surface of the DVST.