viewcam

October 17, 2009 | By admin |

A charge-coupled device (CCD) is a device for the movement of electrical charge, usually from within the device to an area where the charge can be manipulated, for example conversion into a digital value. This is achieved by “shifting” the signals between stages within the device one at a time. Technically, CCDs are implemented as shift registers that move charge between capacative bins in the device, with the shift allowing for the transfer of charge between bins.

Often the device is integrated with a sensor, such as a photoelectric device to produce the charge that is being read, thus making the CCD a major technology where the conversion of images into a digital signal is required. Although CCDs are not the only technology to allow for light detection, CCDs are widely used in professional, medical, and scientific applications where high-quality image data is required.

If you are working at home or in the office at your computer, you will also need a microphone (see enhanced hardware).We recommend using a USB microphone, for best audio quality.

The addition of a webcam will allow you to create elements with video and audio as stand alone elements or can be combined with separately recorded modules. Logitech makes very good Webcams and their software allows for creating WMV videos, which can be used in Camtasia.

The graphic tablets are a great addition to the tools available for creating video podcasts. Most tablets will allow you to either draw ‘electronically’ on the surface or you can use an ink pen and draw on paper. These are great for working through equations or for drawing on slid