ssrs barcode image Direct Broadcast Satellite (DBS) Television in Software

Make QR-Code in Software Direct Broadcast Satellite (DBS) Television

Direct Broadcast Satellite (DBS) Television
Recognizing QR Code In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Quick Response Code Drawer In None
Using Barcode printer for Software Control to generate, create Denso QR Bar Code image in Software applications.
per pixel gives a color depth of 2 65536 colors. Using the HDTV format having a pixel count per frame of 1920 1080 and a refresh rate of 30 frames per second as shown in Table 16.1, the estimated bit rate is 995 Mbps. (A somewhat different estimate is sometimes used, which allows for 8 bits for each of the three primary colors, and this would result in a bit rate of approximately 1.49 Gbps for this version of HDTV). From Table 16.1 it is seen that the uncompressed bit rate ranges from 118 Mb/s for standard definition television at the lowest pixel resolution to 995 Mb/s for high definition TV at the highest resolution. As a note of interest, the broadcast raster for studio-quality television, when digitized according to the international CCIR-601 television standard, requires a bit rate of 216 Mb/s (Netravali and Lippman, 1995). A single DBS transponder has to carry somewhere between four and eight TV programs to be commercially viable (Mead, 2000). The programs may originate from a variety of sources, for example film, analog TV, and videocassette. Before transmission, these must all be converted to digital, compressed, and then time-division multiplexed (TDM). This TDM baseband signal is applied as QPSK modulation to the uplink carrier reaching a given transponder. The compressed bit rate, and hence the number of channels that are carried, depends on the type of program material. Talk shows where
Decoding QR Code JIS X 0510 In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Make QR Code In C#
Using Barcode creator for .NET framework Control to generate, create Denso QR Bar Code image in VS .NET applications.
TABLE 16.1
QR Code ISO/IEC18004 Drawer In VS .NET
Using Barcode creation for ASP.NET Control to generate, create QR image in ASP.NET applications.
Quick Response Code Printer In .NET Framework
Using Barcode creator for .NET framework Control to generate, create QR Code ISO/IEC18004 image in .NET framework applications.
ATSC Television Formats Name Aspect ratio 480i 480p 480p 480p 480i 480p 480p 480p 480i 480p 480p 480p 720p 720p 720p 1080i 1080p 1080p 4:3 4:3 4:3 4:3 4:3 4:3 4:3 4:3 16:9 16:9 16:9 16:9 16:9 16:9 16:9 16:9 16:9 16:9 Resolution pixels 640 640 640 640 704 704 704 704 704 704 704 704 1280 1280 1280 1920 1920 1920 480 480 480 480 480 480 480 480 480 480 480 480 720 720 720 1080 1080 1080 Frames per second 30 24 30 60 30 24 30 60 30 24 30 60 24 30 60 30 24 30 Uncompressed bit rate, mbps 148 118 148 295 162 130 162 324 162 130 162 324 334 442 885 995 796 995
QR-Code Generator In VB.NET
Using Barcode printer for .NET framework Control to generate, create QR Code 2d barcode image in VS .NET applications.
Code 128 Creation In None
Using Barcode creation for Software Control to generate, create ANSI/AIM Code 128 image in Software applications.
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Generating GTIN - 13 In None
Using Barcode maker for Software Control to generate, create EAN-13 image in Software applications.
Code 39 Creation In None
Using Barcode generator for Software Control to generate, create ANSI/AIM Code 39 image in Software applications.
Format type SDTV EDTV EDTV EDTV EDTV EDTV EDTV EDTV EDTV EDTV EDTV EDTV HDTV HDTV HDTV HDTV HDTV HDTV
Encode Bar Code In None
Using Barcode generation for Software Control to generate, create bar code image in Software applications.
GTIN - 128 Generation In None
Using Barcode creation for Software Control to generate, create UCC-128 image in Software applications.
NOTES: ATSC Advanced Television Systems Committee; HDTV high-definition television; SDTV standard definition television; EDTV enhanced definition television; p progressive scanning; i interlaced scanning. SOURCES: Booth, 1999; www.timefordvd.com, 2004.
Encode ISSN - 10 In None
Using Barcode creator for Software Control to generate, create International Standard Serial Number image in Software applications.
Barcode Generator In VS .NET
Using Barcode creation for .NET framework Control to generate, create bar code image in .NET framework applications.
Sixteen
Code 128A Drawer In Objective-C
Using Barcode generator for iPhone Control to generate, create Code 128 Code Set B image in iPhone applications.
Recognize Barcode In C#
Using Barcode scanner for VS .NET Control to read, scan read, scan image in VS .NET applications.
there is little movement require the lowest bit rate, while sports channels with lots of movement require comparatively large bit rates. Typical values for SDTV are in the range of 4 Mb/s for a movie channel, 5 Mb/s for a variety channel, and 6 Mb/s for a sports channel (from MPEG and DSS Technical Notes (v0.3) by C. Fogg, 1995). Compression is carried out to Moving Pictures Expert Group (MPEG) standards. 16.7 MPEG Compression Standards MPEG is a group within the International Standards Organization and the International Electrochemical Commission (ISO/IEC) that undertook the job of defining standards for the transmission and storage of moving pictures and sound. The standards are concerned only with the bit stream syntax and the decoding process, not with how encoding and decoding might be implemented. Syntax covers matters such as bit rate, picture resolution, time frames for audio, and the packet details for transmission. The design of hardware for the encoding and decoding processes is left to the equipment manufacturer. Comprehensive descriptions of the MPEG can be found at http://www.mpeg.org and in Sweet (1997) and Bhatt et al. (1997). The MPEG standards currently available are MPEG-1, MPEG-2, MPEG-4, and MPEG-7. For a brief explanation of the missing numbers, see Koenen (1999). In DBS systems, MPEG-2 is used for video compression. As a first or preprocessing step, the analog outputs from the red (R), green (G), and blue (B) color cameras are converted to a luminance component (Y) and two chrominance components (Cr) and (Cb). This is similar to the analog NTSC arrangement shown in Fig. 9.7, except that the coefficients of the matrix M (the 3 3 matrix) are different. In matrix notation, the equation relating the three primary colors to the Y, Cr, and Cb components is Y C Cr S Cb 0.299 C 0.168736 0.5 0.587 0.331264 0.418688 0.114 R 0.5 S CGS 0.081312 B
Creating Code 3/9 In .NET Framework
Using Barcode encoder for Reporting Service Control to generate, create USS Code 39 image in Reporting Service applications.
Draw UPC - 13 In VB.NET
Using Barcode maker for VS .NET Control to generate, create GS1 - 13 image in VS .NET applications.
(16.2)
UCC - 12 Recognizer In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Create Barcode In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
The Y, Cr, and Cb analog signals are sampled in the digitizer shown in Fig. 16.3. It is an observed fact that the human eye is less sensitive to resolution in the color components (Cr and Cb) than the luminance (Y) component. This allows a lower sampling rate to be used for the color components. This is referred to as chroma subsampling, and it represents one step in the compression process. MPEG-2 uses 4:2:0 sampling, which is described next. Sampling is usually indicated by the ratios Y:U:V where Y represents the luminance (or luma) sampling rate, U the Cb sampling rate, and V the Cr sampling rate. The values for YUV are normalized to a value of
Copyright © OnBarcode.com . All rights reserved.