Martyn WilliamsSenior U.S. Correspondent, IDG News Service Follow me on Google+

Martyn Williams covers mobile telecommunications, Silicon Valley, and general technology breaking news for the IDG News Service, and is based in San Francisco.

Panasonic to expand Lumix brand to phones

Panasonic is expanding its Lumix digital camera brand to cell phones and will unveil its first "Lumix Phone" at next week's Ceatec show in Japan.

Toshiba to show no-glasses 3D TV next week

Toshiba will unveil a 3D TV on Monday that doesn't require the viewer to wear glasses, it said late Tuesday.

Sharp sets aggressive goals for Android e-book reader

Sharp will enter the e-book market this December with two Android-based readers that it hopes can sell a million units in their first year.

Canon creates 120-megapixel image sensor

Engineers at Canon have created a digital image sensor with a resolution of 120-megapixels, the highest yet managed for a sensor of its size.

Toshiba claims hard-drive breakthrough

Toshiba plans to detail a breakthrough in data storage on Wednesday that it says lays the ground for hard drives with vastly higher capacity than today.

Laptop e-mail cache tipped Apple to kickbacks scheme

Much of the data used by Apple to allege kickbacks to a former manager came from a cache of emails found on his laptop, Apple said.

Asian suppliers mum on Apple-kickback allegations

Electronics component suppliers that allegedly paid kickbacks to gain business from Apple declined to comment on the allegations when contacted on Monday.

Japan user marks Twitter's 20 billionth 'tweet'

Twitter passed another milestone on Saturday with the sending of tweet number 20 billion.

Amazon's new Kindle rachets up e-reader price battle

Amazon.com's announcement that it will launch a new version of its Kindle e-book reader in late August could further stoke a price battle between major players.

Panasonic shows prototype 3D lens for Lumix cameras

Panasonic showed for the first time on Wednesday a prototype lens for its Lumix DSLR cameras that will give them the ability to capture 3D still images.

Foursquare registers 100 millionth check-in

Foursquare, the location-based social-networking service, registered its 100 millionth "check-in" on Monday evening, it said Tuesday.

Sharp plans to launch e-book reader this year

Japan's Sharp plans to enter the increasingly competitive e-book reader market later this year with a device that can read a file format of its own

Apple says 400 iTunes accounts hit with fraudulent purchases

Apple has banned a developer from its App Store after fraudulent purchases of his applications were made from around 400 accounts, it said in a statement.

Amazon raises the specs, cuts the price on latest Kindle DX

Amazon will launch on July 7 a new version of its Kindle DX that features a better screen and costs $110 less than the current model.

Sony says 535,000 laptops at risk of overheating

More than half a million Sony laptops sold this year contain a software bug that could lead them to overheat, the company said Wednesday.