Tag: 上海狼族419龙凤

XPS 13 is Finally Perfect. Smile!

XPS 13 is Finally Perfect. Smile!

first_imgAt Dell, we are very proud of the XPS 13. Not only is it a laptop that embodies our continuous innovation, it is also a laptop that has garnered the admiration and accolades of the industry as a whole. Throughout the last few years, reviews have more or less deemed it a perfect laptop, except for one small thing – the placement of our camera. When we disrupted the industry in 2015 by introducing the first edge to edge InfinityEdge screen, it enabled us, for the first time, to fit a 13-inch display in an 11-inch frame. But we also found ourselves faced with a conflict. With our top bezel of the display too small to fit the camera, and technology and engineering not yet advanced enough to provide us with a smaller camera, how could we maintain the integrity of our new narrow bezel? For the time being, we compromised on building the camera into the bottom bezel but immediately set out on a mission to one day move it back to the top.Four years later, we’ve come a long way. Here’s our journey of introducing quite possibly the smallest HD webcam ever built – placed modestly back on the top bezel – and officially perfecting the XPS 13. Solidifying a new sensorEarly on in the development process, we were able to engineer down from a 6-7mm camera dimension to 4mm, but that was still far too big for the XPS 13, which was designed for extreme mobility. We found that the microscopic gold wires that connected the sensor to the camera’s circuit board were taking up critical space, and that we needed a new sensor design to further reduce the size. We worked with our partners to create a new generation sensor that was a smaller format, and moved the wiring pads to the sides so it could be attached horizontally. That eliminated ¾ mm to 1 mm in additional camera height.A new approach to lens designNext, we moved on to tackle the lens. We once again worked closely with our supplier to heavily invest in the design and assembly of these ultra-small components. They even needed to redesign their manufacturing process to miniaturize everything, drastically reducing the package of the lens. They had to develop new capabilities to make all the elements thinner and smaller, while still maintaining incredibly tight tolerances that preserve the lens’ optical quality. Traditionally, the lens and plastic body of the camera are two separate pieces threaded together manually to adjust the focus — sometimes by hand. But as we took a closer look, we realized the threads were adding unnecessary thickness to the camera. We took a page from the smartphone industry and implemented active alignment technology, a first for PC webcams.Our supplier built an assembly machine for laptop cameras specifically to support Dell’s products. These machines are unlike anything we’ve used before and comprise an ultra-precise robot. This highly automated assembly also lends to less variation from module to module, ensuring every customer can expect the same performance and quality. Employing this all-new assembly process, however, meant we had to invest in more than a year of testing to ensure reliability. For example, during pilot runs, we discovered sometimes a small amount of glue could expand beyond the camera body, pushing the top bezel larger than acceptable. So we introduced a laser beam to trim any extra glue, ensuring each camera module is exactly the same size. Through this tested manufacturing process, we were able to shrink the height of the camera another ¾ mm, achieving a vanishingly small 2.25mm final height. Bingo.Smaller without sacrificeIn reducing the camera size, we risked lowering the quality for video conferencing in low light conditions.  When it is dark, it is more difficult for your camera to decipher the beginning and end of an object, so we implemented temporal noise reduction (the first PC maker to do so), that looks at multiple frames of data to decide what’s an edge and what is not, and preserves more of the fine details. We were able to see a 3-4x improvement in the noise levels, enabling us to preserve video quality while reducing the camera size.We made it happenThrough this thorough process of tests, failures, redos and continued innovations over the last four years, we were able to reduce the camera from 7mm to 2.25mm and maintain exceptional high resolution video and picture quality. We disrupted the industry first introducing the narrow bezel trend, and now we are changing the game again with quite possibly the smallest HD webcam ever built. XPS 13 remains at the top of its class.last_img read more

Paratroopers Train to Launch onto Body of Water

Paratroopers Train to Launch onto Body of Water

first_img I served in the glorious Brazilian Army during five years of my life. Those where wonderful years, I had a great aspiration to serve at the Paratroopers Brigade, but, as I served at the Amazon Rainforest area this was very difficult to happen. Nevertheless, I served at an unit which was the Army’s elite at that region, the 5th Company of Guards. Excellent The Airborne Infantry Brigade, part of the Brazilian Army’s Rapid Action Force, performed one of the largest operations ever recorded at an aquatic launching zone, during the first week of March 2013. A C-105 Amazonas airplane from the 1st/9th Aviation Group (GAv), Arara Squadron of the Brazilian Air Force, launched 154 military Soldiers at a launch zone in Sahy, in Rio de Janeiro’s Costa Verde region. The goal of the exercise was to familiarize the troops from the Biguá Task Force with a maneuver element based on the 27th Paratrooper Infantry Battalion, which includes characteristics and challenges of an operation with aquatic landings. The training is part of an extensive brigade course for jungle operations in the Amazon, where ground drop zones are few and the rivers and lakes become a valuable option for military paratroopers. Jumping onto bodies of water has only been done by special troops, such as the Pioneer Company and the Special Forces units, and it requires a series of adjusted guidelines and material. At the Paratroopers Infantry Brigade the pioneers performed a series of tests and equipment adjustments, resulting in established guidelines for this type of operation. Prior to the mission at the General Penha Brasil Paratroopers Instruction Center, the troops trained on how to transport individual equipment, the launching zone operation, and the reorganization of the beachhead. The pioneers have many resources to facilitate the airplane launcher’s job during the operation at a conventional launch zone, but it is more complex when launching on bodies of water. Support boats positioned along the limit of the launching zone use smoke signals assisted by floating equipment developed by the company itself. The lack of signaling in this type of operation forces the individual responsible for the procedure to seek geographic references on land to direct the troops to a precise safety location. During the launch in Sahy, the Delta team, specializing in sub-aquatic and aquatic infiltration, was responsible for the operation’s safety. Major General Roberto Escoto, commander of the Paratrooper Infantry Brigade, was responsible for the first airplane’s launch. He monitored the entire operation with the participation of Soldiers from all paratrooper units, especially the Paratrooper Engineer Battalion that managed and operated all vessels, and the Folding and Maintenance of Parachutes Battalion that ensured proper recovery of equipment with no recorded incidents. By Dialogo March 18, 2013last_img read more

Haslemere reveals takeover bid details

Haslemere reveals takeover bid details

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Lynagh: O’Connell should lead Lions

Lynagh: O’Connell should lead Lions

first_img Press Association Bookmakers suspended betting on the captaincy after Warburton was backed heavily late last week, and the Wales flanker is expected to be unveiled when the squad is announced in London on Tuesday. “I guess the favourite is Warburton, but for me it has to be Paul O’Connell,” said Lynagh, speaking at the launch of Specsavers’ sponsorship of match officials for the British and Irish Lions tour to Australia. “He’s done it before, he’s a big guy, an inspirational bloke, fresh because he hasn’t played much this season and is as fit as he’s ever been. “From a political point of view you have Scottish, Welsh and English represented in the management and no Irish. Appointing O’Connell would balance things up.” Lynagh subscribes to the view that for the first time a ‘tour captain’, who would not be guaranteed his place in the Test XV, should be chosen. “I’d go down that route because it takes the pressure off who’s going to be a certainty in the team,” said Lynagh, who won 72 caps between 1984-1995. “If he’s not playing well, do you drop the captain? If you pick a tour captain then he has to perform during the opening three weeks of the tour to get in the Test team. That would be interesting.” O’Connell, who has missed most of the season with a back injury, became a genuine contender following an epic display for Munster against Harlequins in the Heineken Cup quarter-finals. center_img Australia great Michael Lynagh views Paul O’Connell as the best man to lead the British and Irish Lions this summer, but predicts that Warren Gatland will opt for Sam Warburton.last_img read more