posted 10-22-2011 11:00 AM ET (US)
Unless you have been asleep for twenty years a la Rip Van Winkle, you certainly must be aware of the shift in user interface to touch screen technology from dedicated push buttons and other devices. This trend was likely accelerated by the Apple technology of the iPhone and the iPad, and touch-screen interfaces are now very much standard in mobile devices. The same trend seems to be occurring in marine electronics.One of the benefits of touch screen interfaces is the elimination of many other hardware devices for user input. In particular for marine devices where some waterproof or water-resistant method must be used, eliminating front panel buttons can save money. Instead of ten buttons, you can use the display screen. That saves the cost of ten water-tight switches, fabricating holes for them in a panel, wiring them onto a circuit board, and so on. Instead you just use the display as the input.
A further benefit is the ability to alter the functionality in software. If you decide that you want to add a new button, you can easily add it to the display screen and create a new function. You cannot do that with mechanical switches and dedicated inputs.
I have often thought that the most expensive element of marine electronic devices would be the display, and now that we need a touch sensitive display that would be even more true. However, it appears that manufacturing innovation and volume production in touch sensitive displays has reduced their costs dramatically. For example, I recently received a news release touting a 7-inch wide-screen color display with full touch screen sensitivity that was offered at OEM volume pricing for $20. This is an amazing price point for such a wonderful technology.
With touch screen technology in such high-volume and low-cost production, I think it is soon going to be--or perhaps already is--at the point where it will be less expensive to produce a product with a touch screen interface than with dedicated input buttons and controls.
I am not naive, and I expect that very high brightness displays with water resistant screens are going to be more expensive than $20, but that notion that we are starting from a base price of $20 still astounds me.
Once hardware and system software designers become acquainted with touch screen technology its cost to implement will also decrease. There will be fewer components, fewer sub-assemblies, and less connecting cables. Once you are up to speed with touch screen control interfaces, the cost of adding or changing a feature will be tiny--just a new software release or patch will be needed.
Based on the economy possible with touch screen interfaces, I expect we are going to see more of them in marine electronics and also more at the entry level price points.