Tuesday, April 21, 2009

Thomson’s LDK 6000 mk 2 World cam

Thomson’s LDK 6000 mk 2 World cam has the identical prism based imager and 2 by 3 inch CCD sensors used in the Viper camera. Three 9.2 million pixel (1920 by 4320) HD-DPM+ (Frame Transfer) CCDs, 12 bit A to D conversion and 22 bit digital signal processing permit capture of full resolution HD 1920 by 1080 or 1280 by 720 images in either the 1.78:1 or 2.35:1 aspect ratio using Thompson’s dynamic pixel management. The World cam can output the following formats to HDCAM, DVCPRO-HD or D5-HD recorders: 1080psF at 23.98, 24, 25 or 29.97 fps; 1080p at 23.976 fps; 1080i at 50 or 59.94 fps and 720p at 23.98, 25, 29.97, 50 or 59.94 fps.

Monday, April 20, 2009

More about Sony’s CineAlta

HDCAM is an 8 bit format with 3:1:1 color sampling a 7:1 compression ratio and a data rate of approximately 14o Mbps. Sony makes other HD cameras for field and studio used by broadcasters. Sony’s HDC900 studio camera and HDC950 portable camera rely on the same imager as the CineAlta camcorder. The major difference are that the HDC900 by 950 can output an HD signal in either the 1080i, 1080psf or 720p format and can down sample to output an NTSC or PAL signal. Sony’s HDC930 is a less expensive interlace only version which will output a 1080 by 60i, 1080 by 59.94i or 1080 by 50i signal.

Sony’s CineAlta

Sony’s CineAlta camcorder has a prism based imager with three 2 by 3 inch FTT 2.2 million pixel CCD sensors and 12 bit anolog to digital conversion to capture 1920 by 1080 progressive images in the 16:9 aspect ratios. These images are sub sampled to 1440 by 1080 for recording on HDCAM tape using Sony’s PsF recording scheme. The CineAlta can also capture images at the following progressive frame rates 23.976 fps, 24 fps, 25 fps, 29.976 fps or 30 fps and in interlaced mode at 50 fields per second and 59.94 fields per second.

More about Panasonic’s Varicam

Establishing the correct cadence of the footage relative to the final mastering frame rate which can be 24, 25, 30 or 60 frames per second is done in postproduction. In the field all the frames rate at or below 24 fps and at 25, 30 or 60 fps will play back correctly from the camera’s recorder. Frame rates above 24 fps with the exception of those rates noted above will not play back correctly in the field without using panasonic’s Frame rate converter or a desktop editing system capable of extracting and outputting the unique frames in the proper cadence for the operator’s selected mastering frame rate.


Saturday, April 18, 2009

Panasonic’s Varicam

Panasonic’s Varicam camcorder has a prism based imager with three 2 by 3 inch one million pixel IT CCD sensors that capture 1280 by 720 progressive images at 60 frames per second. These images are sub sampled to 960 by 720 for recording on the DVCPRO-HD tape format. The Varicam camera can alter the rate it captures the images so the frame rates at a constant 60 frames per second. What is recorded in each of those 60 frames varies based on the camera’s capture rate which is set by the operator.

Thursday, April 16, 2009

High Definition Video Cameras

PAL countries use 1080/50i (25 fps) and NTSC countries, 1080/60i (30 fps). Cameras or VTRs capable of recording progressive images in the 1080 format are indicated with a P or PsF after the frame rate. PsF is an acronym for progressive segmented frame recording, developed by Sony to record progressively scanned images on HDCAM recorders which are interlaced recorders. Each progressive frame is split into two fields in order to record it on tape. Because each frame is captured at a single temporal moment, there’s no vertical movement between the fields as there is when interlaced scanning is used. Consequently there’s no loss of vertical resolution due to the interlace factor when the image is reassembled for display or postproduction.

11. High Definition Video Cameras

PAL countries use 1080/50i (25 fps) and NTSC countries, 1080/60i (30 fps). Cameras or VTRs capable of recording progressive images in the 1080 format are indicated with a P or PsF after the frame rate. PsF is an acronym for progressive segmented frame recording, developed by Sony to record progressively scanned images on HDCAM recorders which are interlaced recorders. Each progressive frame is split into two fields in order to record it on tape. Because each frame is captured at a single temporal moment, there’s no vertical movement between the fields as there is when interlaced scanning is used. Consequently there’s no loss of vertical resolution due to the interlace factor when the image is reassembled for display or postproduction.

Sony’s HDC-F950

Sony’s HDC-F950 also relies on a prism based imager with 2/3 inch CCD sensors. The camera has an electronic shutter, electronic viewfinder and uses HD lenses in B4 mounts. Sony’s 2.2 million pixels FIT CCDs have an active picture area of 1920 by 1080 4:4:4 RGB, 10 bit log files via a single fiber optic cable to Sony’s SRW-1 recorder. Output from the HDC-F950 can also be recorded on a SRW-5000 HDCAM-SR recorder or a hard drive array. Multiple HD (Y Cr Cb) formats are supported including: 1080P at frame rates of 24, 25 or 30 fps and 1080i at the frame rates of 50 or 60 fps.


Monday, April 13, 2009

11. High Definition Video Cameras

The high resolution HD signal as defined by the Advanced Television Standards Committee (ATSC) is the 1080 line format, which is 1920 by 1080 with an aspect ratio of 16:9. Images can be interlaced or progressively scanned. Most equipment designated as recording in the 1080 format actually only captures 1440 × 1080 due to sub sampling of the signal. Cameras or VTRs recording 1080 interlaced signals use the letter “i” after the frame rate to designate interlaced recording. Differences between PAL and NTSC frame rates are maintained when recording a 1080 interlaced signal.

Thompson’s Viper

Viper departs from traditional HD cameras because operators can decide to bypass the digital signal processing in the camera and output the raw data from the CCDs as 1920 × 1080 4:4:4 RGB, 10 bit log files through dual link HD-SDI, when the camera is in “Film stream” mode. Viper has three other output modes: as 4:4:4 RGB output as full bandwidth, full resolution video processed through the DSP for color balance, color gamut, gamma, Knee gamma, toe gamma and detail enhancement and multiple HD formats. The HD formats that can be output include: 1080P at frame rates of 23.98, 24, 25, 29.97, 30 fps; 1080i at frame rates of 50, 59.94 or 60 fps and 720p at frame rates of 23.98, 24, 25, 29.97, 30, 50 and 60 fps.

9. Thompson’s Viper

Thompson’s Viper camera relies on a prism based imager and three 2/3 inch CCD sensors, as do most professional HD or SD cameras it has a mechanical shutter, adjustable from 90 to 359 degrees and an electronic viewfinder. The viper uses HD lenses in B4 mounts. Thomson’s 9.2 million pixel Frame Transfer CCDs are able to capture images at the full resolution of the CCD in either the 1.78:1 or 2.35:1 aspect ratio by mapping the 1920 by 4320 pixel array using what Thomson calls dynamic pixel management.

Saturday, April 11, 2009

Panavision’s Genesis

It also has an HD-SDI monitor output, two electronic viewfinder outputs, a fiber optic camera adaptor and integrated lens control. Remote camera control options include Panavision’s RDC or Sony’s MSU or RMB series controllers. The camera’s weight and form factor are similar to existing Panavision 35mm cameras; the Genesis camera body weights 13.25 Ibs and 25 Ibs. The SRW-1 dockable recorder manufactured by Sony is attached. Other notable features include support for variable frame rates from 1 to 50 frames per second and compatibility with Panavision’s film equipment.

Friday, April 10, 2009

Kinetta’s Digital Cinema

The electronics to support what the company calls a sensor agnostic camera is being urbanized by Martin Snashall, an industry veteran. The Kinetta is a hand detained camera about the size of a 16mm film camera. It uses 16mm PL mount or C mount lenses and supports interchangeable sensors CCD or CMOS designs with a highest pixel count of 16 million. The first camera prototypes will use CMOS sensors from Altasens. These sensors have a picture area of 1936 by 1036 and catch either 1920 by 1080 interlaced or 1280 by 720 progressive images. The raw data from the CMOS sensor will be stored on a removable hard drive array that mounts on the camera in a manner similar to a film magazine. Each electronic storage magazine holds 110 minutes of footage. The power specifications suggest a single 80 watt battery will run the camera of several hours. Kinetta’s proposed breakout box, tethered to the camera via a single fiber optic cable, will provide dual link HD-SDI ports to output a 1920 by 1080 4:4:4 RGB signal or a single link HD-SDI port to output a 4:2:2 Y Cr Cb signal. The box also has an SDI port so operators can output a down converted SD video signal.


Thursday, April 9, 2009

Dalsa’s Origin

Dalsa’s Origin is a single sensor camera design by means of Bayer pattern filtration to capture color images. Dalsa’s sensor is an 8.4 million pixel frame transfer CCD. It has a lively picture area of 4046 by 2048, which is larger than 35mm film. The origin camera have an optical throughout the lens, viewfinder and uses 35mm PL Mount lenses and is capable of outputting a 4K data signal. At the moment, there are no recording devices capable of handling neither its 402 data rate nor any with the terabytes of storage necessary for the Origin’s 4 K output. The 4K data workflow Dalsa is envisaging deliver the camera output over four fiber optic channels by the Infiniband protocol developed by silicon graphics. The frame size is 4046 by 2048 and the data are in a proprietary interpolated 4:4:4 RGB linear file format that stores 16 bits per pixel and 16 bits per channel. The abridged 4K bandwidth outputs available: a 12 bit log format, which lowers the data rate to 302 Mbps; and a 10 bit log option, which inferiors the data rate to252 Mbps. The camera’s native file can be converted afterwards using lossless processing to additional file formats such as Cineon, DPX or TIFF

Panavision’s Genesis

Panavision’s Genesis camera uses a 12.4 million pixel CCD sensor with an active picture area matching the 35mm film format, which allows any of Panavision’s existing lenses to be used. The sensor uses a proprietary striped RGB filter pattern instead of a Bayer pattern arrangement. It has twice the pixel density necessary to capture images. The extra density allows the image to over sample to reduce aliasing. The camera outputs a 1920 by 1080 4:4:4 RGB 10 bit log signal through dual link HD-SDI

Bayer pattern

When we seem at the bay pattern, we can perceive that four green and four blue pixels bounded each red pixel. This collection takes advantage of partly cover that exists linking the color spectra of the filters. That overlap makes it likely to exclaim exact values based on pixel’s position and the color values created by the adjacent pixels. The pixel count on the CMOS sensor is 2880 by 2160. The Bayer pattern decreases the amount of pixels for each color to 1440 by 1080, although arri’s claims higher color resolutions are accomplished using their interpolation algorithms. The data generated by the CMOS sensor is processed by means of their 32 12 bit analog to digital converters in parallel and output in real time as a down sampled 1920 by 1080 YUV (4:2:2) HD signal via HD-SDI. Raw Bayer data can be output via dual link HD-SDI to a disk array for non real time depiction to 1920 by 1080 RGB (4:4:4) images.


HYBRID ELECTRIC VEHICLE

Hybrid electric vehicle is a combination of internal combustion engine and battery powered electric vehicle. HEV offers the additional flexibility to reduce emissions and improve fuel economy. Depending upon the power flow of the system has two types of HEV configurations are series and parallel configurations. In series HEV configuration the APU (accessory power unit) supplements the energy storage system which is then used by the main propulsion system. The power flows from APU to ESS and then to propulsion system. The vehicles performance is determined by main propulsion system, ESS characteristics, APU capability and its system controller to manage the power flow. The series HEV configuration is simple to control because APU is not mechanically coupled to the drive system. In parallel HEV configuration the APU is mechanically coupled with the electric drive system. Parallel HEV configuration operates in three modes. They are (1) as a pure EV using the electric motor only, (2) as a conventional vehicle is using only the APU, (3) or both using the APU and the electric motor. The electric motor can also be used a generator, where it supplies energy to the ESS, thus, the APU is used as the main propulsion

Tuesday, April 7, 2009

G20 Summit

G20 describe as Group of Twenty countries summit in United Kingdom. These twenty countries contributed in all summits. Recently, meeting is held at London on April 2nd, 2009. In this pinnacle, all the leaders of twenty countries participate and discuss about the financial markets and crisis about world economy. They continue their discussion about how to face the serious global challenges. In the meeting, they help to support the development of economy and growth across globally. In the working groups of all countries enhance to support the regulation and re-enforcing the global co-operation. The contribution in G20 summit has aimed to develop the worldwide economic and monetary system.

Friday, April 3, 2009

Bluetooth - an advanced technology

It is a highly developed technology and provides some wireless connections to its devices. It does not require any devices to install the further drivers. It is mainly used for the different system communication devices. The most popular utilize of the bluetooth technology is in the cars and automotive. The user may approve to get any user concentration completely. The technology has some accurate for considering all data to be regarded. The enabled devices can make their change based on the frequency very rapidly. These bluetooth devices are used in some safety features. It makes all improved devices for enhancing to all other communication devices.