Archive for the ‘Video Projectors’ Category

Apple patent roundup: Pico projectors and schematic maps

Thursday, August 11th, 2011

It’s turning out to be a pretty big week for Apple’s patent portfolio. Earlier this week the company was granted nearly 20 new patents, and it’s just filed for two more eyebrow-raising patents. The first patent, described in detail at Patently Apple, covers so-called “pico” projectors that could display information from an iPhone, iPad, or Mac against a wall for presentations and other applications. The patent describes built-in projectors for iDevices (which have been a pie-in-the-sky rumored feature for years) and a small projector accessory for Macs. According to the patent this goes beyond simple projection, however, with a “shared workspace” feature enabling images from one projected display to be shared and transferred to another.

This projector patent also describes support for a gesture-based interface that sounds broadly similar to the Kinect peripheral for the Xbox 360. The advantages for Keynote presentations are obvious, and it’s likely that third-party game developers would jump on this feature too. Between the gesture-based interface and the projected images, this all sounds very evocative of the computer interface from the early 00s film Minority Report.

Apple may just be covering its patent bases and may have no plans to actually debut this feature any time soon, but MacRumors notes that Apple did recently purchase the applepico.com domain, possibly related to these new pico projector concepts.

AppleInsider describes today’s other major patent application, Schematic Maps. This patent describes a feature whereby relevant features on a map would be emphasized for a user. For example, roads along a driving route could be distorted to represent only those roads relevant to the route, with distances warped so the entire route could fit on an iPhone’s small display.

This would of course render the map inaccurate in several other ways, but it would definitely simplify navigation compared to the current Maps app, which must zoom in and out among various levels of detail for longer routes with multiple turns. This would also be more in line with how most users actually think about navigation; the emphasis is usually less on accurate representation of distances, cartography, etc., and more about finding landmarks and relevant points of interest along a route.

AppleInsider notes that this second patent is credited to two former employees of Placebase, a Google Maps competitor that Apple purchased nearly two years ago.

http://www.tuaw.com/2011/08/11/apple-patent-roundup-pico-projectors-and-schematic-maps/

Pocket Projectors Advance in Key Features

Monday, November 8th, 2010
Tony Hoffman – PC Magazine Tony Hoffman – Pc Magazine Mon Nov 8, 1:19 pm ET

Pocket projectors are becoming brighter, with increased resolution and battery life, boding well for the rapid growth of the sector, a market research firm asserts.

In a report this past spring on the pocket projector market, Pocket Projector Technology and Market Forecast Report, DisplaySearch predicted that more than 140 million pocket projectors will be in use by 2018. The company had identified the need for simultaneous improvement in these devices’ resolution, brightness, and battery life, and says that trends typified by recent product introductions and announcements bear out its rosy outlook.

Video projectors are useful for at least two things

Saturday, June 26th, 2010

Video projectors are useful for at least two things; enlarging the display of a computer and playing back video (like televisions-having nothing to do with computers). I am an advocate of the latter. Video projectors in rural locations can be a window to the rest of the world. One of the original definitions a of tele-vision is LONG DISTANCE SIGHT.  Video projectors empower teachers to show videos, shot with a video camcorder that is very far away from the rural location.
It does not matter if we can successfully imagine and/or create a future where video projectors will be pervasive in rural schools. IT IS INEVITABLE.

The ratio of financial cost compared to the number of learner hours is vastly superior to any other solution. Video stored on flash media requires 1 gigabyte for 10 hours. In mid 2010, an 8 GB SD card costs $16 and holds 80 hours of video. In the coming years, an SD card will hold 2 terabytes holding 20,000 hours of video.

In the long run Haitz’s Law will impact video projectors in two ways. Brighter video projectors will make for larger screens; someday as large as a drive-in movie theater from a hand held pico projector. Haitz’s Law can also dramatically reduce the power requirements for a pico projector such that it can be operated with a button battery used for wristwatches. These batteries will be recharged in a few minutes and run for hours.

We are working on a formula that you may find helpful in considering solar recharging.

Friday, January 15th, 2010

The formula will tell us how many square inches of solar panel/hours are required for every lumen/hour of projection brightness

CES Report

Friday, January 15th, 2010

Portable media players are smaller, cheaper, faster, louder, brighter and use less energy.
We saw about 20 projectors at CES that run on DC. The mini-projectors are over 100 lumens and the small projectors are over 200 lumens.
Only the Pico projectors (under 100 lumens) have an internal battery.
The mini-projectors and the small projectors use a laptop power supply which converts AC to DC.
None of them are intended to run from batteries because they require a battery about the size of a scooter battery. This is impractical for the business presentation market.
Any of them work well when connected to a scooter, automobile or UPS battery.
None have more than 1GB internal memory.
Most can connect to external speakers.

We are currently testing a Samsung projector.
http://downloadcenter.samsung.com/content/UM/200910/20091030192951875/BP59-00092F-06Eng.pdf

The SP-P410M is 170 lumens (17 times brighter than a pico)
It uses lots more energy, 49 Watts.
There is no internal memory but it plays from USB sticks.
The internal speakers are very loud

There is a direct relationship between battery weight and lumen hours.
Brighter projectors or more hours require more amp/hours.

Hoping to complete our hand cranked projector prototype

Monday, November 9th, 2009

Visiting these folks tomorrow  http://globalrecordings.net/ to learn about their hand cranked audio players.

Mini Projectors

Thursday, August 13th, 2009

Pico video projectors are tiny, using very little power but they are dim (only about 10 lumens). Mini projectors are 100 lumens but they use more electricity. Some mini projectors are battery powered but most of them are DC powered via a laptop power supply that plugs in to the AC grid (mains). We are testing the Benq Joybee GP1 LED Mini Projector with batteries. We are finding that it will probablly work well with a motorcycle battery or a high capacity cordless drill battery.