Audiologica Ltd: Company Registration Number : 6632457    VAT Registration Number: 892 5261 02

Quick: what do hybrid cars, tidal power turbines, and RedEye mini have in common? The answer is that all three use a technique called power harvesting to capture and store energy. Hybrid cars harvest power from braking, tidal power turbines harvest power from the tides, and RedEye mini harvests power from the communication signals sent over the headphone jack modem. We use some of this power to run the microprocessor, but most of it is stored in a pair of rather large capacitors that act like small batteries to give RedEye mini that extra kick when transmitting an infrared signal. By tuning the frequency at which the modem operates, the size of the capacitors, and the way we pulse the LED, we were able to give RedEye mini a substantial range boost over what we could get from the headphone jack alone.

What does all this mean for you? Simply that a lot of engineering went into RedEye mini so that you can get the most out of it.

Includes

   * “RedEye mini” universal remote adapter

   * Carrying case with keychain

Capabilities

   * Remotely control equipment up to 30 feet away

   * Integrated infrared learning sensor

   * Storage capacity limited only by the amount of memory available on your iPhone, iPod touch, or iPad

Requirements

   * iPod touch (2nd or 3rd generation), iPhone 3G/3GS, iPhone 4, or iPad running iOS 3.0 or later

   * RedEye software application (available as a free download from iTunes)

Supports

   * Virtually all home entertainment devices with infrared capabilities. (Infrared transmission and learning between 20kHz and 60kHz.)

Device Compatibility

   * iPod touch (2nd and 3rd generations)

   * iPhone 3G/3GS

   * iPhone 4

   * iPad

By itself, your iPhone does not have the ability to send out the infrared signals used to control most home theater equipment. RedEye mini fills that gap. It runs off of the power your phone delivers through the headphone jack, so RedEye mini is completely portable, requires no batteries, and never needs recharging. Download the RedEye iPhone application, plug in your RedEye mini, and you are ready to go.

RedEye mini works with the 2nd or 3rd generation iPod touch, iPhone 3G/3GS, iPhone 4, and iPad.

With very few exceptions, infrared remote controls use carrier frequencies between 20kHz and 60kHz, with the majority operating at around 38kHz. By contrast, audio playback through the headphone jack of a modern MP3 player tops out at around 20kHz. Although that may seem good enough, the Nyquist theorem states that in order to faithfully capture and reproduce a signal we need to operate at more than twice the frequency — or 40kHz to 120kHz. Since these frequencies are beyond the capability of the headphone jack, we needed to find another solution.

In order to reproduce these higher frequencies, we put a microprocessor into the RedEye mini. The mini’s microprocessor has no problems keeping up with normal infrared control frequencies, but the question was how to tell the microprocessor what signals to send. To accomplish this we turned the headphone jack into a small modem. We can send signals up to the mini’s processor through the left and right channels, and the processor can respond over the microphone line. Thankfully iOS gives us fine-grained control over audio playback and recording so we didn’t have to worry about keeping up on that side.