Company Filing History:
1 out of 21 
2 out of 832,912 Years Active: 1988-1992
Title: Innovative Contributions of Chih C. Chang
Introduction: Chih C. Chang, an inventive mind based in Huntingdon Valley, PA, has made significant strides in the field of technology with a total of three patented innovations. His work focuses particularly on the realms of signal processing and digital systems, contributing to the advancement of engineering applications.
Latest Patents: Among his most notable inventions is the patent for D/A and A/D converters utilizing weighted impedances. This apparatus converts the sum of multiple digital signals into an analog signal using only resistors and switches. The innovation allows the operating time to be reduced to merely the time required for a single switch to process the signal. Additionally, this technology can be employed in an A/D converter to efficiently derive a digital signal from the difference between an analog signal and several digital signals without incurring additional time for subtraction computations.
Another key invention by Chang is the Isolated carry propagation fast adder. This device enables the addition of two binary numbers with distinct computation of the sum and carry propagation. The carry is processed through a switch-controlled network, accelerating the process beyond what prior art adders could achieve, all without increasing the number of logic gates. This innovation can be seamlessly fabricated into an m-bit integrated circuit, serving as a foundational component for larger bit addition circuits.
Career Highlights: Throughout his career, Chih C. Chang has showcased an impressive ability to develop essential components that cater to the fast-evolving digital landscape. His emphasis on efficiency and speed in computing have positioned his patents as valuable contributions to the industry, influencing both theoretical research and practical applications.
Collaborations: During his professional journey, Chang has collaborated with notable companies such as Moore Products Company. These partnerships have allowed him to further refine his inventions and share his expertise in electronic components with a broader audience.
Conclusion: In summary, Chih C. Chang stands out as a prolific inventor whose three patents exemplify his commitment to enhancing the efficiency of digital signal processing. His contributions, particularly in the management of time and resourceful use of components, continue to influence advancements in modern technology.