Mark D Chapman

Title: Mark D Chapman: Innovator in Communication Systems

Introduction

Mark D Chapman is a notable inventor based in Marengo, IL (US). He has made significant contributions to the field of communication systems, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of integrated voice and data communication systems.

Latest Patents

Chapman's latest patents include a "Method and apparatus for scan operation in an integrated voice and data communication system." This invention relates to a scan mode of operation for communication systems that support both voice and data services. Prior to entering the scan mode, a mobile station sends a message to the fixed network equipment, specifically to a data controller, indicating its transition into scan mode. Upon exiting scan mode, the mobile station communicates with the data controller to signal that it is no longer in scan mode. With this knowledge, the data controller can send data messages to the mobile station using a preamble that may include multiple short confirmed message packets, each containing a list of mobile stations scheduled to receive data messages.

Another significant patent is the "Transceiver self-diagnostic testing apparatus and method." This invention includes an apparatus and method for conducting self-diagnostic testing of transceivers in a communication system. A feedback unit is utilized, allowing for the performance of a loopback test independent of the transmit frequency to receive frequency difference, minimizing the need for excessive circuitry.

Career Highlights

Mark D Chapman is currently associated with Motorola Corporation, a leading company in the telecommunications industry. His work at Motorola has allowed him to contribute to innovative solutions in communication technology.

Collaborations

Throughout his career, Chapman has collaborated with notable colleagues, including Kenneth P Weiss and Mario Frank DeRango. These collaborations have further enriched his contributions to the field.

Conclusion

Mark D Chapman is a distinguished inventor whose work in communication systems has led to valuable patents that enhance the functionality of voice and data communication. His contributions continue to influence the industry positively.