transmitters

Devices that monitor inner ear activity could eventually be powered by the ear itself, according to research detailed in the current issue of the journal Nature Biotechnology by scientists from MIT, Massachusetts Eye and Ear Infirmary (MEEI), and the Harvard-MIT Division of Health Sciences and Technology (HST).

They say that for decades we have known the inner ear houses its own natural battery, but this is the first demonstration of its ability to power something external without compromising hearing.… Read more

Old McDonald had a farm. E-I-E-I-O. And on his farm he had a cow with a wireless intravaginal temperature sensor. E-I-E-I-O.

Swiss farmers are helping to test a new system that sends them alerts when their dairy cows are in heat. Stresses and supplements have led to cows showing fewer visual signs of being in heat. That's where technology is stepping in.

The system from Swiss company Anemon consists of a wireless sensor (installed where the sun don't shine) and a transmitter box that attaches to the cow's collar. An accelerometer in the transmitter collects activity data.

When the cow reaches an optimal temperature (also know as "feeling frisky"), the transmitter text messages the farmer to arrange for a bull rendezvous or artificial insemination. … Read more

In human relationships, nothing should surprise. Indeed, the only extreme reaction ought to be disappointment.

This is what I feel after I learned from the excellent Beaver County Times that a man is being accused of placing a transmitter beneath his wife's bed.

His purpose was allegedly to discover if she was having sex.

The more alert among you might have noticed the phrase "his wife's bed." This would suggest either that the gentleman in question and his wife had an agreeable but separate sleeping arrangement. Or that there was trouble beneath their roof.

It seems … Read more

As implantable medical devices become smaller and less power hungry, they are taking on a variety of new roles. What began as largely stationary objects, such as pacemakers and cochlear implants, are becoming small enough to actually pass through our bodies (i.e. in the form of pills) to deliver drugs and perform diagnostics.

Now, a new class of medical devices is emerging that adds a twist to the traditional implant: the devices are so small that they can travel through our bloodstream, not to mention are powered wirelessly via electromagnetic radio waves, according to Stanford electrical engineer Ada Poon.

By moving through the bloodstream, these tiny implants will be able to perform minor surgeries such as removing blood clots, Poon told an audience at the International Solid-State Circuits Conference in San Francisco this week.… Read more

Livio Radio, developer of a free car Internet radio app for iPhone and Android, and Dice, developer of audio integration kits for OEM car stereos, have teamed up to provide a solution for streaming Internet radio to your car without ripping out the stock receiver. It starts with an app on your iPhone and ends with hardware that takes over your car's satellite radio input.

Livio's app delivers more than 45,000 Internet radio stations and Internet streaming AM and FM radio stations via your smartphone's data connection. (The app's free version steps down to 300 … Read more

With millions of implantable medical devices in the U.S. alone, and some 300,000 more people receiving them worldwide every year, the need to protect these wireless devices from being hacked is increasingly urgent.

Wearers might soon be better protected, thanks to new work out of MIT and the University of Massachusetts-Amherst, so long as they don't mind walking around in invisible shields.

The system the research team will be proposing at the Association for Computing Machinery's Sigcomm conference in Toronto this August uses a jamming transmitter small enough to be worn as a watch or necklace.

The device would essentially be authorized to access the implant and send encrypted instructions to the transmitter (the team calls this the "shield"), which would in turn decode the encryption and relay the instructions to the implant.

Using a device that is separate from the medical implant is key for a few reasons: it allows for post-encryption in devices that are already implanted; it enables authorized emergency responders to simply remove the patient's shield in the event of emergencies; and it doesn't require the size of the implants to increase to accommodate and power the shield.

The new system expands on a technique recently developed at Stanford University that allows for sending and receiving signals in the same frequency band. In typical wireless technology, using the same frequency band interferes with the signal, but by employing three antennas positioned precise distances apart, one band can now be used.… Read more

Dexim--manufacturer of accessories for iPhones, BlackBerrys, and other smartphones--has sent us a pair of devices from its car solutions line of products.

The first is the DFU012 Touch Screen FM Transmitter, a universal adapter for smartphones and MP3 players that takes an audio signal and broadcasts it over a low-power FM channel to be picked up by a nearby car stereo.

The device runs on a single AAA battery and should work with any device that features a 3.5mm headphone jack or audio output. At an MSRP of about $30, an FM transmitter such as this is one of … Read more

EPO Consulting's XML Transmitter is a powerful tool for developing and testing Web services. It will POST or GET XML messages using HTTP to a Web server and display the server's response. It's a handy addition to your Web management toolkit.

The program's configurable interface includes links advertising the developer's other products along the top edge, though registration removes them. The interface itself is efficient and attractive, with a look that sets it apart from typical Windows applications. Separate Directory and Server panes keep things tidy. There's a PDF-based Help file and Web-based assistance, … Read more

Can you imagine placing your cellphone on a Starbucks table and seeing it charge instantly?

Gainesville, Fla.-based WiPower (pronounced "y"-power) is manufacturing wireless-charging technology that could potentially facilitate just that.

Ryan Tseng founded WiPower after he realized how burdening it is to travel with bundles of chargers.

His frustration resulted in WiPower's wireless power transmitter, a mouse pad-like device that connects to a wall with one cord. Devices with an integrated power receiver placed upon the mat start charging immediately.

The product uses inductive coupling, a technology electric toothbrushes have used for years now, mostly … Read more