Mark W Troeller

Title: Mark W Troeller: Innovator in Data Transfer Technologies

Introduction

Mark W Troeller is a notable inventor based in Visalia, California, recognized for his contributions to data transfer technologies. He holds three patents that showcase his innovative approach to enhancing data processing and video image manipulation.

Latest Patents

One of Troeller's latest patents is a "Direct memory access apparatus for transferring a block of data." This invention provides a method and arrangement for a DMA transfer mode that supports multiple transactions. It generates a set of transaction entries for a DMA transfer, each containing information related to the address and command instruction of a transaction. The transaction entries are stored in an address/cmd-output FIFO. The invention negotiates for control of the system bus, and upon gaining control, the commands and addresses related to each transaction are sequentially placed on the bus. For read operations, data received from the bus is stored in a data-in FIFO before being sent to the desired destination. For write operations, the data to be transferred is stored in a data-out FIFO before being placed on the bus for transfer. The number of data words transferred is monitored to determine when a transaction is complete, as well as the total number of transactions to ascertain when a DMA transfer is complete.

Another significant patent is for a "Circuit to separate and combine color space component data of a video." This invention provides a method for separating interleaved luminance and chrominance color space components in a single data stream with minimal CPU intervention. The separating circuit receives a series of graphics/video image data composed of interleaved components at successive clock cycles. It directs selected bytes representing the luminance component to a first path, where data from two successive clock cycles are combined. Similarly, chrominance component data is directed to a second path for combination. The combined data are then output alternately. Additionally, the invention includes a method for interleaving luminance and chrominance components stored separately into a single data stream.

Career Highlights

Troeller has worked with prominent companies such as Silicon Graphics, Incorporated and Silicon Graphics, Inc. His experience in these organizations has contributed to his expertise in data processing technologies.

Collaborations

Throughout his career, Troeller has collaborated with notable individuals, including Michael L Fuccio and Henry Packard Moreton. These collaborations have likely enriched his work and contributed to his innovative projects.

Conclusion