The chip found on some MiniDV and DV tapes is for recording extra data items, such as index marks and titles. Only a few cameras use this feature, mostly from Sony. I am presently looking into a list of models that support use of the chip.
I do not use the feature myself, I use clear legible handwritten tape labels and separate paper tape logs for every tape. The chip does not offer as much flexibility for comments. There are a number of applications for the Palm pilot and PC's that can handle the data better, including some logging applications that can actually create an edit decision list.
I do not recommend making this chip feature a priority in tape purchase or camera selection.
Last update: 08:46 PM Saturday, April 29, 2006