how to read data from barcode scanner in c# High-End Coding Standards and Applications in C#

Scanning PDF-417 2d barcode in C# High-End Coding Standards and Applications

Table 2-5 High-End Coding Standards and Applications
Scan PDF417 In Visual C#.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan PDF417 image in .NET framework applications.
www.OnBarcode.com
PDF-417 2d Barcode Recognizer In Visual C#
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Algorithm APT-X100 ATRAC Lucent PAC Dolby AC-2 Dolby AC-3
Bar Code Reader In C#
Using Barcode recognizer for VS .NET Control to read, scan bar code image in .NET framework applications.
www.OnBarcode.com
Scan Bar Code In C#.NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Sample Rates (kHz) 441 441 441 441 441
Scanning PDF 417 In C#.NET
Using Barcode decoder for .NET Control to read, scan PDF-417 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
PDF 417 Recognizer In .NET Framework
Using Barcode reader for ASP.NET Control to read, scan PDF417 image in ASP.NET applications.
www.OnBarcode.com
Channels 1 2 1 51 2 1 51
Decode PDF417 In .NET Framework
Using Barcode reader for VS .NET Control to read, scan PDF-417 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
PDF-417 2d Barcode Recognizer In VB.NET
Using Barcode decoder for .NET Control to read, scan PDF-417 2d barcode image in VS .NET applications.
www.OnBarcode.com
Bit Rates (Kbps) 1764 256/ch 128/stereo 256/ch 32 384
Recognize DataMatrix In Visual C#
Using Barcode scanner for VS .NET Control to read, scan ECC200 image in VS .NET applications.
www.OnBarcode.com
Recognizing UPC Code In C#.NET
Using Barcode decoder for .NET framework Control to read, scan UPC A image in .NET applications.
www.OnBarcode.com
Applications Cinema MiniDisc DBA: 128/160 Kbps DBA Cinema, highdefinition television (HDTV) MP3: LIII DBA: LII@256 Kbps DBS: LII@224 Kbps DCC: LI@384 Kbps Cinema Internet/www, for example, LiquidAudioTM and atobTM audio General
Decoding USS-128 In Visual C#
Using Barcode reader for .NET framework Control to read, scan GS1-128 image in .NET framework applications.
www.OnBarcode.com
Scan Bar Code In Visual C#.NET
Using Barcode decoder for VS .NET Control to read, scan barcode image in .NET applications.
www.OnBarcode.com
MPEG-1, LI-III
MSI Plessey Recognizer In Visual C#.NET
Using Barcode reader for Visual Studio .NET Control to read, scan MSI Plessey image in .NET applications.
www.OnBarcode.com
PDF417 Reader In .NET
Using Barcode reader for Reporting Service Control to read, scan PDF-417 2d barcode image in Reporting Service applications.
www.OnBarcode.com
32, 441, 48
Scanning Code 39 Extended In Java
Using Barcode decoder for Java Control to read, scan Code-39 image in Java applications.
www.OnBarcode.com
Recognizing EAN 13 In Objective-C
Using Barcode reader for iPad Control to read, scan EAN-13 Supplement 5 image in iPad applications.
www.OnBarcode.com
1, 2
Recognizing Bar Code In .NET Framework
Using Barcode recognizer for Reporting Service Control to read, scan barcode image in Reporting Service applications.
www.OnBarcode.com
Recognize Bar Code In Java
Using Barcode decoder for BIRT Control to read, scan barcode image in BIRT applications.
www.OnBarcode.com
32 448
Decode Code 3/9 In Objective-C
Using Barcode decoder for iPad Control to read, scan Code 39 Extended image in iPad applications.
www.OnBarcode.com
UCC - 12 Scanner In VS .NET
Using Barcode scanner for Reporting Service Control to read, scan EAN / UCC - 13 image in Reporting Service applications.
www.OnBarcode.com
MPEG-2/BCLSF MPEG-2/AAC
32, 441, 48, 16, 22, 24
1 51 1 96
32 640 8 64/ch
MPEG-4
200 bps 64 Kbps/ch
Technologies for Packet-Based Voice Applications
Bitrate per channel (Kbps)
Figure 2-7 Example of audio encoder(s) (MPEG-4)
2 4 6 8 10 12 14 16
Scalable Coder
Text-toSpeech Parametric Coder (eg, HILN) CELP Coder
T/F Coder (AAC or TWIN-VQ) 4 kHz 8 kHz Typical Audio Bandwidth MPEG-4 audio version one integrates a set of tools for coding of natural sounds at bit rates ranging from as low as 200 bps up to 64 Kbps per channel For speech and audio, three distinct algorithms are integrated into the framework, namely, two parametric coders for bit rates of 2 4 Kbps and 8-kHz sample rate as well as 4 16 Kbps and 8- or 16-kHz sample rates For higher quality, narrow-band (8-kHz sample rate) or wideband (16 kHz) speech is handled by a CELP speech codec operating between 6 and 24 Kbps For generic audio at bit rates above 16 Kbps, a "time/frequency" perceptual coder is employed 20 kHz
22 ITU-T Recommendation G726: ADPCM
Initial implementations of VoATM tended to utilize PCM or ADPCM methods, while VoFR tended to use ADPCM or proprietary compression schemes VoMPLS could use any number of encoding schemes listed in Table 2-2 Given the potential (although low-probability) utilization of ADPCM, we cover the technology over the next two sections The importance of ADPCM may diminish over time as the CELP/ACELP algorithms of nearly equal MOS, yet with a quarter of the bandwidth requirement, become more deployed Nonetheless, you must keep in mind that carriers are not going to be revamping their networks and replace $50 billion of working equipment just to save bandwidth (and not achieve a major growth in new revenue opportunities) The characteristics described in this section90 are recommended by the ITU-T for the conversion of a 64-Kbps A-law or m-law PCM channel to and from a 40-, 32-, 24-, or 16-Kbps channel in G72691 The conversion is applied
2
to the PCM bit stream using an ADPCM transcoding technique The relationship between the voice-frequency signals and the PCM encoding/decoding laws is specified in ITU-T Recommendation G711 As stated by the ITU-T, the principle application of 24- and 16-Kbps channels is for overload channels carrying voice in DCME, whereas the principle application of 40-Kbps channels is to carry data modem signals in DCME, especially for modems operating at greater than 4,800 bps A simplified block diagram of both the ADPCM encoder and decoder is shown in Figure 2-891
221 ADPCM Encoder
Subsequent to the conversion of the A-law or m-law PCM input to uniform PCM, a difference signal is obtained by subtracting an estimate of the input signal from the input signal itself An adaptive 31-, 15-, 7-, or 4-level quantizer is used to assign 5, 4, 3, or 2 binary digits, respectively, to the value of the difference signal for transmission to the decoder An inverse quantizer produces a quantizer difference signal from the same 5, 4, 3, or 2 binary digits, respectively The signal estimate is added to this quantized difference signal to produce the reconstructed version of the input signal Both the
Figure 2-8 Simplified block diagram for ADPCM
64 Kbps PCM input
Convert to unifrom PCM
Input + signal
Different signal
Adaptive quantizer
ADPCM output
Signal estimate Reconstructed signal Adaptive predictor + Inverse adaptive quantizer
Quantized difference signal Encoder
ADPCM input
Inverse adaptive quantizer
Quantized difference signal +
Reconstructed signal
Convert to PCM
Synchronous coding adjustment
64 Kbps output
Signal estimate Adaptive predictor Decoder
Technologies for Packet-Based Voice Applications
reconstructed signal and the quantized difference signal are operated on by an adaptive predictor, which produces the estimate of the input signal, thereby completing the feedback loop
222 ADPCM Decoder
The decoder includes a structure identical to the feedback portion of the encoder, together with a uniform PCM to A-law or m-law conversion and a synchronous coding adjustment The synchronous coding adjustment prevents cumulative distortion from occurring on synchronous tandem codings (ADPCM-PCM-ADPCM digital connections) under certain conditions The synchronous coding adjustment is achieved by adjusting the PCM output codes in a manner to eliminate quantizing distortion in the next ADPCM encoding stage
Copyright © OnBarcode.com . All rights reserved.