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Saw the device on TV
Measurement.Blues   6/20/2014 4:45:16 PM

Last night, I saw the device in a TV ad for the iPhone 5 during the Red Sox game. the ad was for all kinds of athletic monitoring with an iPhone.


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How the sensor read the trajectory & distance the ball travels
Sanjib.A   6/17/2014 2:56:57 PM
Since the sensor gets attached to the Velcro of the golf glove, does the sensor analysis the hand movement using an accelerometer? How the sensor analyzes ""Why did the ball go there?..."? How does it sense the trajectory of the ball and the distance the ball travels with that swing?

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Attached to the glove
Measurement.Blues   6/17/2014 8:37:05 AM
I wonder though, because the button attached to the golf glove, if that's the optimin location. I'm sure you get more info than not having it, but is there a better location? Or is attaching it to the glove the the best compromise between accuracy can practicality?

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Leveraging the phone
RichQ   6/16/2014 10:30:24 AM
I've seen a lot of sports and fitness devices that use a smartphone as their UI and link to the Internet. This one also uses the phone's accelerometer as one of the sensors for the golfer's actions. The unit measures the hand movements while the smartphone measures the hip movements. I think it was a clever idea to make the phone part of the product's sensor array since it can be assumed to be already present as the display device.

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Baseball and tennis
Measurement.Blues   6/16/2014 8:14:24 AM
Baseball has been into using data and statistics for several years now, but thiswill provide yet another set of metrics. But, it will be years, if ever, before players wear such devices in game situations. Baseball has only this year adopted video reviews of plays and we've had that capability for years.

In a way data acquisition might be better than video. Take a foul tip. Such a device would unquestionably tell if even the slightes foul tip occurred. Vidoes can still lave doubts if the foul tip is slight enough.

See Sports should adopt real technology for why we should use distance measuring devices for American football and other sports.

For baseball (a.k.a, American-rules cricket, sort of), knowing the trajectory of the ball eliminates any doubt of home runs. Crowd interference would be indicated by an abrupt change in the ball's trajectory. Strike zones would have to be defined by an umpire for each batter, which would allow the umpires some control of the game. They could even have a heads-up display to see the position of the ball as it passed over the plate and call balls and strikes appropriately and accurately, even consistently.

As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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