sensors

Canon develops mammoth camera sensor

A week after announcing an image sensor with a whopping 120 megapixels, Canon revealed Monday it's created another boundary-pushing prototype: a chip with a light-gathering area measuring a vast 202x205mm.

The huge sensor is 40 times larger than even Canon's largest commercial image sensors, the full-frame chips measuring 36x24mm used in high-end SLRs. Indeed, it's a lot larger: big enough to swallow most of the surface area of the 300mm-diameter silicon crystal out of which it's made using a CMOS (complementary metal oxide semiconductor) process.

Notably, it employs new circuitry Canon had to develop to pump data off the processor fast enough to keep up with video.

One reason to build larger sensors is to increase their light-gathering area, and Canon delivers the goods here. It can record 60-frame-per-second video with light levels of 0.3 lux--about what a full moon overhead produces by some measurements. … Read more

Introducing the wheelchair that can stalk

The Human-Robot Interaction Center at Japan's Saitama University is developing a wheelchair whose camera and laser sensor enable it to track--and follow--the person next to it.

The wheelchair, which is considered standard in all other respects, uses a distance sensor to determine which way the followed person's shoulders are facing so that it can change direction as the leader does.

"[Care] facilities sometimes don't have enough staff, so a single helper has to push two wheelchairs," a Saitama spokesperson says in a news report. "With wheelchairs like this, which can follow automatically, you can … Read more

iPhone 4 proximity sensor may be causing issues during calls

While Apple cruises to new sales records with its latest iPhone family member, some users are finding iPhone 4 to be more like the drunk uncle than the cool aunt, citing proximity sensor issues when attempting to make phone calls.… Read more

Users: iPhone 4 proximity sensor causes issues

While Apple cruises to new sales records with its latest iPhone family member, some users are finding the iPhone 4 to be more like the drunk uncle than the cool aunt, citing, among other glitches, proximity sensor issues when attempting to make calls.

How deep is the issue? On the Apple support discussion forums, it's 20 pages deep. And counting. Details of the issue vary throughout the forum posts, but essentially, the proximity sensor (the one that shuts down the screen functionality when your iPhone is close to your face or in your pocket) seems to be malfunctioning.

Some … Read more

Is your perfect camera coming soon?

The number of compact and ultracompact digital cameras available from major manufacturers is overwhelming--and it's about to get worse. Before summer's out, most of the companies will have announced a new batch of point-and-shoot models in an attempt to woo you into upgrading or at least penciling them into your holiday shopping budget. Judging by the reader e-mails I receive, none of the current crop seem to have all of the features you desire, so maybe some new options are exactly what's needed.

My fear, though, is it'll just be more of the same, with too … Read more

What happened to the Vitality Sensor?

A few weeks ago, Nintendo developed a partnership with the American Heart Association. The Wii Fit is one of Nintendo's most successful product/game combinations ever. All new Wiis are now packaged with Wii Sports Resort and Wii MotionPlus, along with an approval stamp from the AHA.

It seemed like the stage was perfectly set to trot back out with the Vitality Sensor Satoru Iwata unveiled at last year's E3 press conference.

So, what happened?

Instead of fitness, motion, and heart health, Nintendo's presser was full of retro games and the 3DS. We're not complaining; far … Read more

Phase One: All the camera $55K can buy

Most folks think carefully before spending $300 on a new camera. I'm more serious about photography, but I still swallowed hard before buying an SLR costing about 10 times that.

But brace yourself for even more sticker shock, because there are some professionals who spend more than an order of magnitude beyond what I did. This is the domain of medium-format digital cameras, whose sensors have roughly twice the surface area of a high-end SLR for maximum image quality.

Medium-format gear is beyond my means but not beyond my curiosity, so I was pleased with an offer to try one out. In this case, it was Phase One's top-of-the line products--the 645AF and newer 645DF cameras, the P65+ image sensor back that can be attached, and a handful of lenses.

Such gear appeals chiefly to fashion and commercial photographers, the types who produce full-page ads of glamorous models and diamond-encrusted watches. Lacking the gaggle of assistants, spacious studio, and forest of flash equipment common in this realm, I'm not equipped to put a modern medium-format camera through its full paces. But I'm not a bad or inexperienced photographer, so for those who've wondered what a medium-format machine is like, here are my impressions.

So what do I think of a camera with this price tag? … Read more

Digital City 85: E3 edition--Kinect, motion games, Nintendo's mysterious 3DS

A certain E3 Expo has swept in to steal the spotlight everywhere, so, of course, we spend the episode breaking down the aftermath of Microsoft's news conference, including an impressive surprise from ESPN. Is the Kinect worth it? Will Nintendo's 3DS be any good? And why are there so many damn shooters? Our guest, gaming/tech expert, E3 veteran, and former Playboy editor Scott Alexander, joins us for some grumpy and impassioned talk.

Next week, Dan will be back from his E3 adventures, hands full of strange pictures and stranger stories. Until then, enjoy the show!

IBM launches Mote Runner for sensor networks

IBM on Monday rolled out a software development kit for an application dubbed Mote Runner with the aim of spurring the adoption of sensors in various devices, products, and systems. The real goal is to enable the so-called Internet of things by making sensor networks easier to deploy and manage.

Mote Runner is a free download. IBM made the announcement at the 2010 Sensors Expo & Conference. The Mote Runner moniker refers to motes--or wireless sensor nodes--that gather information including temperature, movement, and light and refer back to a network.

Meanwhile, Memsic, which makes these micro sensor systems, will include … Read more

The 404 582: Where we give 'em the horns (podcast)

Today's episode of CNET's The 404 Podcast kicks off with breaking news from Nintendo, which just announced a partnership with the American Heart Association.

In an effort to combat the irrefutable evidence that video games will make you fat, all Nintendo retail boxes will proudly display the AHA's heart-shaped logo in conjunction with a Web site offering healthy-lifestyle tips.

It's going to take more than a sticker to encourage kids to engage in an active lifestyle, but the AHA is willing to compromise with "active-play video games" like the Wii Fit and the Wii Vitality Sensor … Read more