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Tag: laser pointer

Stop getting run over by those passenger-transport golf carts in airport concourses with this one incredible tip, brought to you by the Big Laser Pointer industry.

Background:

Airport terminals often have small golf-cart-like trams that can be driven around in the passenger concourses. These are often used to help people move around the concourses (for example, one might be used to help a passenger with a leg in a cast who is trying to make it to a connecting flight).

The issue:

These passenger carts can move quickly, and may run over pedestrians in the terminal. To help prevent this, the carts usually emit an incredibly loud and annoying beep (like a truck backing up).

However, it is usually not very obvious where a cart is based only on the annoying beeping sound, especially in a crowded concourse (Figure 1).

 

2a-old-style.png

Fig. 1: The annoying beeping coming from this airport golf cart lets people know that a cart is nearby, but requires pedestrians to 1) find the cart and 2) figure out what path the cart is attempting to take through the airport crowds.

 

Proposal:

Instead of only beeping, the passenger cart could also have a special set of headlights that would project a “danger zone” image in front of them. This would make it extremely obvious as to where pedestrians should not walk.

 

2b-new-style.png

Fig. 2: This updated passenger cart has special headlights that project a “danger zone” region in the path of travel of the cart. These headlights could be repurposed laser pointers with a more spread out pattern (instead of a single dot).

Conclusion:

These new headlights could be an after-market attachment, since most airports will probably not want to replace their existing fleet of golf carts.

The light would only turn on when the shuttle is moving and would only consume as much energy as ~10 handheld laser pointers, so it shouldn’t substantially reduce cart battery life.

PROS: Would make it much easier to avoid being run over by an airport carts.

CONS: Probably… none? Is this a legitimately good idea?

 

3-airport-shuttle.png

Fig. 3 (bonus): Illustration for a hypothetical patent application.

Are you hunched over your laptop while you give a presentation? Save both your posture and your presentation with this one incredible eco-friendly tip.

Background:

When giving a presentation on a large screen, there are two popular options for calling attention to specific areas of a slide deck:

  1. Physically gesture at the screen (or use a laser pointer, as seen in Figure 1).
  2. Use the laptop trackpad to move the mouse pointer / arrow around.

The issue:

The trackpad method—which requires the presenter to hover around their laptop—usually makes for a less engaging presentation, but it’s the only option for a presentation that requires real-time interaction.

So far, there’s been no way to combine the best of both worlds: 1) the direct-pointing of the laser pointer and 2) the ability to affect the on-screen user interface elements.

 

laser-remote

Fig. 1: Presentation remotes often consist of a slide advance button, a “back” button, and a laser pointer. Some of them also have a gyroscopic mouse, but this feature usually controls awkwardly at best.

Proposal:

Until now, that is!

In this proposal, the presentation remote (and laser pointer) will allow the user to point the laser at an element on the screen (say, a “play video” button), click a button on the remote, and have the on-screen element respond (in this case, playing the video).

The system works as follows:

  • The presentation remote is paired to the presenter’s laptop already, in order to allow the slide advance button to work. This is a normal feature of all presentation remotes.
  • The remote also gets a “reference” image of what’s on the laptop screen at the exact moment. This doesn’t have to be high-resolution; the remote just has to know generally what the screen looks like, updated a few times per second.
  • The remote also also contains a camera, so it can see what its laser pointer is pointing at.
  • So when the presenter points a laser at the large presentation screen, the remote now knows exactly what element the laser is hitting, since it can compare the camera image to the reference image of what’s on the laptop.

This allows the user to essentially turn the presentation screen into a giant touchscreen.

For a touch-aware operating system (e.g. iOS, Android, or Microsoft Windows), this would require no additional software support beyond sending a simulated touch event at the laser-pointer-pointed-at location.

laser-pointer-touchscreen

Fig. 2: The remote has a camera in it, so it can compare what it’s pointing at to the “reference” image from the presenter’s laptop: if the images mostly match, the remote can figure out exactly what the laser pointer is pointing at.

Conclusion:

If you thought it was TOO EASY to set up a presentation these days, this new and complex system will guarantee at least 15 minutes of “wait… hang on, I think I’ve got it working…. no, huh. Is it input 1, or input 2?” at the beginning of every presentation.

PROS: Prevents deforestation by reducing the number of wooden presentation pointers that will be manufactured.

CONS: May reduce deforestation so much that plants grow rampantly across the globe, killing all animal life and depleting the atmosphere of carbon dioxide. All because you couldn’t be bothered to walk over to your laptop to move the mouse!!!