Abstract :
Charge-transfer device (CTD) technology is maturing, although it has been only six years since the introduction of the bucket-brigade and the charge-coupling concepts. This maturation is apparent from the devices that are becoming available commercially and from the many papers in the joint special February issue on charge-coupled devices of the IEEE Journal of Solid-State Circuits and IEEE Transactions on Electron Devices that describe devices for specific applications. In the words of the two Guest Editors of the issue, ¿the moment of truth for the technology is now rapidly approaching as charge-coupled devices (CCDs) face trial in the marketplace and have to compete both in cost and performance with other technologies.¿