Company Filing History:
Years Active: 1982-1985
Title: Gunter John: Innovator in Video Disc Technology
Introduction
Gunter John is a notable inventor based in Indianapolis, IN (US). He has made significant contributions to the field of video disc technology, holding a total of 4 patents. His innovative work has paved the way for advancements in audio and visual media.
Latest Patents
One of Gunter John's latest patents is for a disc record with a tapered groove. This video disc record of the constant angular velocity type (CAV) features a spiral groove of constant pitch formed in a band on its surface. The groove has a nominal vertical dimension and vertical displacements that taper from the outer radius to the inner radius. One component of the vertical displacement conveys an FM carrier wave of constant amplitude and high frequency, representing picture information. A second component conveys lower frequency FM carrier waves for sound information, with its amplitude varying as a function of the groove radius. This design improves the audio FM carrier-to-noise ratio without significantly increasing undesirable sound beat effects during playback.
Another significant patent involves a matrixing apparatus and method for use in the manufacture of molded replicas. This invention aims to improve the seal between matrixes and their replicas, reducing premature separation issues. A circumferential spiral groove of a rectangular configuration is cut into the outermost area of the matrix, forming a highly effective seal. This design enhances the electrolyte seal between the replica and the matrix, ensuring better quality in the final product.
Career Highlights
Gunter John has worked with RCA Inc., a company known for its innovations in electronics and media technology. His work at RCA has allowed him to explore and develop groundbreaking technologies in the field of video discs.
Collaborations
Throughout his career, Gunter John has collaborated with notable coworkers, including Philip Michael Heyman and David P Bortfeld. These collaborations have contributed to the advancement of technology in their respective fields.
Conclusion
Gunter John's contributions to video disc technology and his innovative patents have significantly impacted the industry. His work continues to influence the way audio and visual media are produced and experienced.