The following from ExtremeTech.com
Motorola patents e-tattoo that can read your thoughts by listening to unvocalized words in your throat
by John Hewitt
Imagine
trying to patent the smartphone, or for that matter, the tattoo. Any company
that could swing that, could probably also patent the fork and knife.
Incredibly, a new application from Google-owned Motorola Mobility seeks a
patent not for any particular utensil, but rather, for setting the table. In
other words, if you have an electronic smart tattoo, and want it to speak to
your mobile communications device, you may soon be able to do it in spades, but
you will have to do it Google style.
But
hold on for a minute, as there is a bit more to the whole concept than might
first appear. The tattoo they have in mind is actually one that will be
emblazoned over your vocal cords to intercept subtle voice commands — perhaps
even subvocal commands, or even the fully internal whisperings that fail to
pluck the vocal cords when not given full cerebral approval. One might even
conclude that they are not just patenting device communications from a patch of
smartskin, but communications from your soul.
Or
maybe not. It has been known for decades that when you speak to yourself in
your inner voice, your brain still sends neural spike volleys to your vocal
apparatus, in a similar fashion to when you actually speak aloud. The main
difference between the two, is that the nervous action driving covert speech as it is called, is subthreshold, and does not generate the
full muscle contraction. The same might also be said for imagining throwing a
baseball — it is probably not possible to even do so without simultaneously
calling up and at least partially launching unamplified motor programs. Stated
another way, your thoughts are your motor intentions, only they are not always
recognizable as such if they are sufficiently abstracted.
The
actual patent speaks of
picking up an “auditory signal” from the tattoo, and converting it into a
digital signal. The signals from the brain, carried by spikes on the hundreds
of laryngeal nerve fibers (and other nerves modulating the vocal tract), are
already digital. They bear no real resemblance to an auditory signal at this
point. After transformation in the numerous muscles that control the speech
organs, there is still no single signal that could be sent to a transducer to
generate sound recognizable as speech. Looking at an image of a smart tattoo
pioneered by John Roger’s Illinois-based research lab,
there seems to be all kinds of sensor goodies which can be built in to pick up
various biologics. I don’t know if the strain gauges could pick up an actual
speech signal in the same way that a conventional microphone could, but they
would certainly generate useful information. The built-in EMG and ECG
electrodes would not pick up individual spikes so to speak, but could certainly
generate electrical records of muscle activity, and perhaps eventually compound
nerve potentials. Rogers helped to form a company, MC10, that hoped to
commercialize this technology, and although he indicated that he was not
involved in these recent ventures, they have joint development efforts with
Motorola Mobility
There is already a device known as a throat microphone
that has been used to record an auditory signal in noisy conditions like, for
example, the cockpit of a jet fighter. Developed along with the first pressure
suit back in 1934, it used a direct contact microphone to pick up sound waves
traveling through solid objects such as the throat wall. Later so-called throat
microphones, such as the Xbox 360 accessory, only use an open-air microphone.
They do not really exclude background noise, nor have the ability to pick up
unvoiced signals. What got some folks attention recently, namely those over at Patently
Apple, was a few peculiar statements in the patent regarding the recording
of galvanic skin responses. These guys first heard about the e-skin tattoo from
Regina Dugan, the former DARPA head who is now in charge of advanced research
at Motorola. Their article notes that the e-tattoo would provide a nice way to
do authentication, but the seemingly out of place inclusion of the lie
detection talk certainly raises some questions.
Covert voice activation of your device in a crowd would definitely be a nice feature. Instead of actually speaking to Siri or Google Now, you could merely think your voice command. Detecting stress and other emotion could have some applicability too, although who else really needs to know if you have a lump in your throat? Perhaps I have not read that many patents recently, but there certainly did seem to be an excess of wording, and scope. Every wireless communications protocol I am familiar with was included in some form, somewhere. Not only were there definitions for words like “a” and “an,” but also actual percentages associated with a list of words like “about,” “approximately”, “essentially”, and “substantially”. Clearly this is one among several recent patents that we all may want to keep an eye on.
Covert voice activation of your device in a crowd would definitely be a nice feature. Instead of actually speaking to Siri or Google Now, you could merely think your voice command. Detecting stress and other emotion could have some applicability too, although who else really needs to know if you have a lump in your throat? Perhaps I have not read that many patents recently, but there certainly did seem to be an excess of wording, and scope. Every wireless communications protocol I am familiar with was included in some form, somewhere. Not only were there definitions for words like “a” and “an,” but also actual percentages associated with a list of words like “about,” “approximately”, “essentially”, and “substantially”. Clearly this is one among several recent patents that we all may want to keep an eye on.
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