Knowledge

Video decoder

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sources. Next, the chrominance is demodulated to produce color difference video data. At this point, the data may be modified so as to adjust brightness, contrast, saturation and hue. Finally, the data is transformed by a
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The input signal to a video decoder is analog video that conforms to a standard format. For example, a standard definition (SD) decoder accepts (
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signals to digital video. Video decoders commonly allow programmable control over video characteristics such as
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Lock — indicates the decoder has detected and is locked (synchronized) to a valid analog input video signal
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This article is about decoding analog video signals. For digital video compression decoders, see
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converter to generate data in conformance with any of several color space standards, such as
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The output digital video may be formatted in various ways, such as 8-bit or 16-bit
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The main functional blocks of a video decoder typically include these:
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Video demystified : a handbook for the digital engineer
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Video decoding involves several processing steps. First the
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to produce a raw, digital data stream. In the case of
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because they "decode" an analog video format such as
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Integrated circuit video decoder (Philips SAA7114H)
336: 253: 214:are then separated; this is not necessary for 319: 326: 312: 136:— indicates the beginning of a video frame 33: 14: 337: 294:This electronics-related article is a 167:Y/C (luminance/chrominance) separation 98:) that conforms to SD formats such as 282: 259: 155: 231:. Together, these steps constitute 142:— indicates video blanking interval 24: 50:, often contained within a single 25: 361: 286: 54:chip, that converts base-band 13: 1: 246: 298:. You can help Knowledge by 185:Host communication interface 7: 200:analog-to-digital converter 129:and other signals such as: 10: 366: 281: 189: 85: 26: 179:A/D converters for Y/C 176:Clock/timing processor 39: 170:Chrominance processor 76:video capture devices 37: 260:Jack, Keith (1996). 350:Electronic circuits 198:is digitized by an 173:Luminance processor 52:integrated circuit 48:electronic circuit 40: 345:Electronics stubs 307: 306: 164:Analog processors 156:Functional blocks 16:(Redirected from 357: 328: 321: 314: 290: 283: 276: 275: 257: 182:Output formatter 21: 365: 364: 360: 359: 358: 356: 355: 354: 335: 334: 333: 332: 280: 279: 272: 258: 254: 249: 204:composite video 192: 158: 88: 32: 23: 22: 15: 12: 11: 5: 363: 353: 352: 347: 331: 330: 323: 316: 308: 305: 304: 291: 278: 277: 270: 251: 250: 248: 245: 233:video decoding 191: 188: 187: 186: 183: 180: 177: 174: 171: 168: 165: 157: 154: 153: 152: 149: 143: 137: 87: 84: 80:frame grabbers 18:Video decoding 9: 6: 4: 3: 2: 362: 351: 348: 346: 343: 342: 340: 329: 324: 322: 317: 315: 310: 309: 303: 301: 297: 292: 289: 285: 284: 273: 271:1-878707-23-X 267: 263: 256: 252: 244: 242: 238: 234: 230: 226: 222: 217: 213: 209: 205: 201: 197: 196:analog signal 184: 181: 178: 175: 172: 169: 166: 163: 162: 161: 150: 147: 144: 141: 138: 135: 132: 131: 130: 128: 124: 120: 116: 112: 107: 105: 101: 97: 93: 83: 81: 77: 73: 72:video encoder 69: 65: 61: 57: 53: 49: 45: 44:video decoder 36: 30: 19: 300:expanding it 293: 261: 255: 232: 193: 159: 127:clock signal 108: 89: 71: 56:analog video 43: 41: 221:color space 212:chrominance 29:video codec 339:Categories 247:References 68:saturation 208:luminance 113:, 12-bit 92:composite 140:Blanking 121:(SD) or 64:contrast 216:S-Video 190:Process 123:BT.1120 96:S-Video 86:Signals 268:  206:, the 119:BT.656 66:, and 46:is an 229:YCbCr 146:Field 115:4:1:1 111:4:2:2 296:stub 266:ISBN 237:NTSC 227:and 210:and 134:Sync 100:NTSC 78:and 241:PAL 239:or 225:RGB 104:PAL 102:or 94:or 60:hue 341:: 243:. 117:, 82:. 62:, 42:A 327:e 320:t 313:v 302:. 274:. 31:. 20:)

Index

Video decoding
video codec

electronic circuit
integrated circuit
analog video
hue
contrast
saturation
video capture devices
frame grabbers
composite
S-Video
NTSC
PAL
4:2:2
4:1:1
BT.656
BT.1120
clock signal
Sync
Blanking
Field
analog signal
analog-to-digital converter
composite video
luminance
chrominance
S-Video
color space

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