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James T Walker: Composite display device for combining image data and method. Cromemco, Paul Hentzel, February 23, 1982: US04317114 (115 worldwide citation)

A set of overlay images are established within a stack of memory maps for superpositioning over a host image on a raster display. The overlay images include legends, grids, cursors, graphs, formats, etc. which are primarily empty background with few actual image pixels. Overlay conflict between corr ...


2
James Terrell Walker: Interface device for encoding a digital image for a CRT display. Cromemco, Paul Hentzel, October 17, 1978: US04121283 (101 worldwide citation)

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 device. A CRT display format of parameters su ...


3
Curtis G Terwilliger, W James McKeefery, Szu C Sun, Roger D Melen: Random entry intercomputer network with collision prevention. Cromemco, Paul Hentzel, October 9, 1984: US04476467 (33 worldwide citation)

An arbitrary number of member computer stations are inter-connected by a "party" communication network. Each member station is normally in a high impedance Monitor Mode, for monitoring in-coming messages. The incoming messages latch the monitoring stations into a Receive Only Mode for preventing "in ...


4
Marvin L Kausch: Isolation chamber for electronic devices. Cromemco, Paul Hentzel, April 7, 1981: US04259843 (32 worldwide citation)

The isolation chamber has an aluminum outer housing with heat transfer fins extending therefrom on the outside vertical surfaces, and insulation material mounted along each inside surface thereof forming a thermally insulative shell. Large aluminum studs extend inwardly from the side surfaces of the ...


5
James T Walker: Transition data image processor. Cromemco, Paul Hentzel, December 14, 1982: US04364037 (27 worldwide citation)

Edge data codes forming an image to be displayed are entered into a random access memory map at addresses corresponding to the scanline number and pixel number of the edge in the display of the image. The edge codes may be entered into the memory map in any sequence (i.e. the sequence of availabilit ...


6
Marvin L Kausch: Computer graphics system with low memory enhancement circuit. Cromemco, Paul Hentzel, June 30, 1987: US04677574 (11 worldwide citation)

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 or 1-to-0), and are detected by an edge dete ...


7
Cong T Vo: Removable data cartridge for a computer system. Cromemco, Paul Hentzel, September 26, 1989: US04870605 (5 worldwide citation)

A removable data cartridge is mounted in a data station cavity on a main computer. The cartridge has a securing bolt extending therethrough for securing the cartridge to the main computer. The bolt is turned by a knob on the front panel of the cartridge. The other end of the bolt engages a threaded ...


8
Curtis G Terwilliger: Multi-passband differentially controlled data rate synchronizer. Cromemco, Paul Hentzel, March 9, 1982: US04319200 (4 worldwide citation)

A phase detector generates an error signal by comparing an input data rate F:in with an output clock rate F:out. The error signal is amplified and applied to the base of an emitter follower circuit. Current from a discharging capacitor within a clock ramp generator flows through the emitter follower ...


9
Marvin L Kausch: Single throw multi-grip latching mechanism. Cromemco, Paul Hentzel, October 4, 1983: US04407536 (2 worldwide citation)

The door on an environmental chamber is provided with a single throw, multi-fingered over-center latching mechanism. The latching fingers extend from a common pivoting assembly, and are operated as a unit by a single handle. A hook on the end of each finger engages a post on the chamber housing. As ...


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