5/16/2008 - Photo of rumored Palm Treo 800w appears |
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Back in the day when I had a Palm OS Treo I used to load up the custom ROMs created by Shadowmite since they took out a bunch of junk that was included by default and helped me recover some available memory. It seems he scored the first photos of the rumored upcoming Windows Mobile Palm Treo 800w. It seems his site is getting hit hard so check out Palm Infocenter for the photo and more rumored specs of this device. It look like a Palm OS Centro device with a couple more keys to activate the Windows Mobile soft keys.
Apparently, the device may be running Windows Mobile Professional 6.1 (touch screen) on a 320×320 resolution display. The CPU may be around 400 mHz, it may have 128MB RAM and 256MB ROM, have EV-DO Rev. A, integrated GPS receiver (a first for Palm), and integrated WiFi (another first for a Palm smartphone). With the EV-DO support it will come from Sprint or Verizon, but no availability is yet known. Sprint was the first to get the Centro so maybe they will get the 800w first as well.
I personally enjoyed using the Palm Centro device, but have moved on from the Palm OS so I did not buy one for myself. This Windows Mobile version is tempting, but at this time I would actually liked to have seen a non-touch screen device from Palm running Windows Mobile since I find the Standard/non-touch screen devices to be snappier and more stable while still having 90% of the functionality of the touch screen devices.
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4/11/2008 - Digital video camera format types of storage |
1, AVI file format
Extension. AVI video formats, can be said to be the earliest one of the popularization of specifications. Because AVI format has not been compressed, so just tens of AVI video files often need 5 to 8 MB of storage space. Plus, in the absence of a complete set of standard AVI format to use to reference the manufacturers alone, each interpreting their own specifications are at least 100 species of the above. Despite the current popularity of video playback software, such as: WINDVD, POWERDVD, even AcdSee 3R-1, and other so-called broadcast can be up to 60 per cent to 70 per cent of the AVI file. But from the current situation, the MicroSoft Mediea Player 8.0 is compatible with the best of AVI video player software. One of the most common video formats.
2, MOV file format
MOV is most digital camera makers most of the mining animation format. The main reason lies in its streamlined compression technology, provides users in the low-resolution video under good choice, coupled with the player software by Apple Computer's QuickTime free license to use, even more of its natural rate. QuickTime 4.12 above the current version not only be able to handle video, animation, graphics, text, sound, and even 360-degree virtual reality (VR) is not the problem.
3, Motion JPEG - AVI file format
The JPEG standard is adopted Quancaiyingxiang, a unique distortion DCT compression technology, the image data will be less important in the removal of effectively reduce the file size. Animation playback capability combined with the JPEG, MJPEG that is known as the acronym for Motion JPEG. Their stockpiles of AVI extension was still to meet player software compatibility. Because of this image specifications simple, of memory and small, and many do not support synchronous radio digital camera, for example: Nikon CoolPix 9XX series, as well as some simple video conferencing network with the camera, prefer this format.
4, MPG - file format
With the increasing popularity of the VCD, even with MPEG-1 technology can also be extended to follow. Although, at present only very small part of the digital camera to support this specification animation recording (mostly to Japan SONY majority). Its combination of professional CCD, lens coupled with the results of animation technology, and almost no less than DV. MPEG is the full name of Moving Picture Experts Group, is ISO / IEC standards (ISO and the International Association of Electronic Technology) one. MPEG-1 standard appeared in 1992, was designed to support the first generation of CD-ROM players specifications, transmission speed of 1.5-4-0 Mbps (megabits per second, about a 29.97 fps), Resolution: 352 x240 . There are three MPEG compression of the frame, respectively, I frame (Intra frame), P frame (Predicted frame) and B frame (Bi-directional frame) to increase compression performance. Through the player's decoding, MPEG-1 technology allows the electronic images can be a long time to fast forward, and even choose the time to bring these action points. The recorded files to MPG, but also in direct burn VCD, VCD PLAYER to see through.
5, ASF - file format
The introduction of MPEG-1, at least two major computer revolution in the world, the first time that electronic recording animation files with the search function, and the other is to suppress all MP3 music. Because record companies have long plagued by the MP3 player, in the development of a new generation of audio-visual technology to make sure that is more stringent, it is not easy being copied to replace the MP3 audio format. To this end as a software industry leader Microsoft fully committed to promoting the popularity of ASF format: ASF format is characterized by some of the latest MPEG4 video compression, voice and partly to use their own R & D WMA format (WMA MP3 compression ratio stressed its strong two also times, and the sound quality similar to MP3, WMA with the confidentiality provisions and the right to use the design as MP3 files is not as easy to copy).
To avoid copyright disputes WMA audio, the industry there has been a switch to the DIVX video standard MP3 format. DIVX to MPEG4 video compression, MP3 audio compression, and AVI file format storage! . However, as players DIVX standard image files downloaded DIVX necessary when the CODEC, and DIVX players resource requirements of the system is very high, at least in the AMD K-350 or Pentium II 300 CPU can be more successful players. In the foreseeable future, unless substantially enhance the digital audio IC processing speed, or within a short period of time will not see this with the specifications listed digital audio recording equipment.
6, RM - file format
RealNetworks RealVideo is exclusively for the Internet developed by the real-time audio and video playback software, creating web pages on the web site can provide real-time audio-visual programmes. Similarly, the development of RealAudio by RealNetworks, the Web site can provide real-time voice broadcast. Users can search to the following Web site a free download RealPlayer software and information. In addition, the RM can also support direct broadcast online Stream Line, and no need to download the entire video files. However, because of the shortcomings of poor quality RM is not effectively resolved, the market also did not support the current RM format of the recorded digital camera. But some of the domestic manufacturers low-end digital cameras has been made in the mandate of RM are being developed with the technology is that the near future can be seen on the support network of RM format digital camera.
7, GIF animation format
GIF, strictly speaking, only the dynamic picture display format. Color only support to the 256-color histogram, not recording. Standard also divided into two GIF87a and GIF89a, only a transparent background and GIF89a animation playback capability. Digital cameras, and only one can direct the production SONY GIF CLIP.
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3/27/2008 - DVD players and DVD-ROM drive |
DVD players and DVD-ROM drive
Perfect DVD standards, including standards of the film industry and computer industry standards, the application is also derived from DVD player and DVD-ROM drives two-defined function approximation and the series. To the ordinary user is concerned, we are familiar with is the DVD player, it is with the DVD-ROM drive what difference there?
1. DVD players
DVD players now include video and audio DVD Video Player of the DVD Audio Player, and now we are all common DVD Video Player for playback of high-definition DVD player. The first generation of DVD video player is basically Japan's Matsu****a, Toshiba, Sony and South Korea's Samsung, LG, and other company's products, due to the initial products copyright protection reasons, mostly used Code restriction technologies. However, the escalation in the follow-up products, Sony Corporation was the first to launch a regional player code, allowing for further improve the penetration rate. China's third-generation DVD player such as the new Branch, love, and so many vendors are the region's major product code.
As a typical DVD players should include at least two core components: decoder chip and movement. Decoder chip is the role of head of the laser reader decode the signal processing, which have a direct impact on the quality of image definition to the level of audio processing is 100% digital, and other functions.
DVD DVD player movement responsible for the rotation, the first completed by the DVD laser signal read. DVD players from the early development of the first generation to the third generation and even today the fourth generation of its key components in the optical head structure has undergone significant changes, single skinhead replace Shuangguangtou become the trend of the times. The first generation of DVD players to be more compatible CD / VCD discs used Shuangguangtoudoupan technology, but with the constant renewal of existing technologies, the high cost of Shuangguangtou coil, such as complex mechanical structure gradually exposed shortcomings, Bald-the-road simple structure, components, the number of small, responsive, stable performance advantages beginning to show up with a better ability to read films, more compatibility, DVD players become the main trend.
In the function, the function of DVD players and other video devices also have very different from the DVD due to the use of advanced international standard MPEG-2 video compression technology and VBR technology, the DVD can reach the level of more than 500 lines resolution. To appreciate the perfect definition DVD, users get a big-screen color TV (29 inches or more) or digital TV with the match, but even the use of general-TV, the DVD or VCD images than will the Super VCD images clearer and more fluent. In the audio, DVD player is compatible with Dolby AC-3, MPEG-2, DTS playback technologies, such as voice, in addition to higher quality images and sound, the DVD also with a variety of unique features:
¡ñ multi-angle function (Multi-Angle) may at any time from different angles to watch DVD discs. How to select a function with the perspective of the players and discs, players can be up to four different from the angle of viewing.
¡ñ more plot function (Multi-Story) allows users to choose different plot development clips, according to their personal preferences scheduling of programming.
¡ñ multiple languages (Multi-Language), this feature can choose a different language to watch DVD player, to provide maximum choice of eight languages.
¡ñ more subtitles function (Multi-Subbtitle) This feature allows users to select one of the language subtitles to watch DVD player, up to 32 kinds of language subtitles to choose.
¡ñ multi-functional TV screen ratio (Multi-Aspect) can be set up to watch the TV screen aspect ratio is 16 9 film, even an ordinary aspect ratio is 4 3 TV, according to the Dashboard of discs to watch video screen or panoramic images.
In addition, the DVD player also includes child lock feature, grading rewind, fast forward, slow release and programming functions to meet our customers some of the basic operational requirements. In essence, it provides the same function is similar to DVD VCD playback, but the picture and sound quality are to a considerable height.
2. DVD-ROM drive
DVD players and DVD playback simply different, DVD-ROM drive on your computer to the application of a much wider, to a large extent, DVD technology is the improvement of personal computers and television combined opportunity, Microsoft, Intel and Compaq, and other companies even plan within ten years now personal computers, analog TV and digital TV convergence of three phases. DVD-ROM drives, DVD players and the development of similar, was also originally from Japan's Toshiba, Panasonic, the United States IBM, Compaq and Singapore-based Creative is equivalent to the first launch in 1996, after several years of development, and DVD-ROM drives have been of course, a CD-ROM drive for alternatives.
Since it is a DVD-ROM drive, which is defined naturally and CD-ROM drive the same, a single-4X DVD-ROM drive as an example, the data transmission rate of 1350 KB / s, single-double speed CD-ROM drive, 150 KB / s 9 times. The speed of development, like the CD-ROM drive, experienced from a singleto 4withand is becoming mainstream 8x or 10 product process, and each time the speed increase also represents the end of a generation. DVD-ROM drive far from the structure of a DVD player so complicated, it is the overall movement, servo circuits, such as a simple control circuit components, but because movement with a structure similar to the DVD player features, some low - The price of DVD players also use the DVD-ROM drive of the movement to create, to reduce production costs, the actual performance and with a dedicated product compared to the natural movement will be greatly reduced. A DVD-ROM drive only monomer equipment, it can and CD, VCD and CD-ROM compatible data, it is no comparison DVD players, but DVD-ROM drive no decoder chip circuit design, in the intervals DVD player must be With hardware or software products. |
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