This inventor holds 3 USPTO granted patents. Top assignee: Terax Communication Technologies Inc.. Active years: 2005-2009.
Company Filing History:
Years Active: 2005-2009
Title: Jinn-Ja Chang: Innovator in Bluetooth Technology
Introduction
Jinn-Ja Chang is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of Bluetooth technology, holding a total of 3 patents. His innovative work focuses on enhancing the functionality and efficiency of wireless communication devices.
Latest Patents
One of Jinn-Ja Chang's latest patents is a method of updating firmware using the object push profile in the Bluetooth object exchange protocol. This method involves connecting a Bluetooth transmitter to a Bluetooth electronic device that requires a firmware update and a host that stores the new program code. The Bluetooth transmitter checks the parameters in the EEPROM of the device to determine if an update is necessary. Using the object push profile in the OBEX protocol, the new program code is reprogrammed into the device's flash memory. Once the reprogramming is complete, the Bluetooth connection is terminated, finalizing the firmware update.
Another significant patent is for a wireless transmitter. This invention includes a ROM with a lookup table that stores various IF modulation signals. A state machine selects the appropriate signal based on loaded data, which is then converted into an analog IF modulation signal by a DAC. This signal is filtered and modulated to an emission frequency using a local oscillator, resulting in an RF signal. The design simplifies the complexity of the device, making it more compact and efficient for wireless products.
Career Highlights
Jinn-Ja Chang is currently employed at Terax Communication Technologies Inc., where he continues to innovate in the field of wireless communication. His work has significantly impacted the development of Bluetooth technology and its applications in various devices.
Collaborations
Throughout his career, Jinn-Ja has collaborated with notable colleagues, including Jen-Sheng Huang and Yaw-Guang Chang. These collaborations have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Jinn-Ja Chang is a prominent figure in the realm of Bluetooth technology, with a focus on improving wireless communication devices. His patents reflect his commitment to innovation and his contributions to the industry will continue to influence future developments.