Company Filing History:
2 out of 97 
1 out of 239 
Years Active: 1978-1992
Title: Innovations of David J Vallins
Introduction
David J Vallins is a notable inventor based in Cheltenham, GB. He holds three patents that showcase his contributions to electrical engineering and display technology. His work reflects a deep understanding of digital logic circuits and their applications in modern technology.
Latest Patents
One of Vallins' latest patents is focused on a shift register connection between electrical circuits. This invention involves an electrical assembly that includes a digital logic circuit, an analogue processing circuit, and an analogue power circuit connected to test equipment. The test data from the equipment is supplied to the circuits via a shift register divided into three serial portions. Each portion serves to isolate the circuits from one another while supplying test data to the circuit under test. The output from the circuit is clocked along the register to its output.
Another significant patent by Vallins pertains to display systems. In this invention, a cathode-ray tube display system receives signals that define the coordinates of the screen elements where the cathode-ray beam is incident during its raster scan. These signals are supplied to a comparator along with signals defining the coordinates of points that outline the image to be displayed. The comparator generates a brightness-weighting signal for each element based on its proximity to the defined points. This system also includes a store where brightness-weighting signals are combined to produce a total signal for each element, controlling its brightness.
Career Highlights
Throughout his career, Vallins has worked with prominent companies such as Smiths Industries Plc and Smiths Industries Public Limited Company. His experience in these organizations has contributed to his expertise in electrical engineering and innovation.
Collaborations
Vallins has collaborated with notable individuals in his field, including David V Stephens and Christopher M Thomas. These collaborations have likely enriched his work and contributed to the development of his patents.
Conclusion
David J Vallins is a distinguished inventor whose patents reflect significant advancements in electrical circuits and display technology. His contributions continue to influence the field and demonstrate the importance of innovation in engineering.