CEA 861B PDF

CEA 861B PDF

电子发烧友 电子技术论坛 EIA STANDARD EIA/CEAB A DTV Profile for Uncompressed. Advanced Timing and CEA/EIAB Timings. NOTE: To use the Advanced Timing page, you must be an advanced user and familiar with the concepts of. The newly adopted EIA/CEAB (B) standard defines protocols for sending DTV signals over an uncompressed digital video interface.

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Versions prior to 1. A DTV Monitor that simultaneously supports both picture aspect ratios of a video format timing e. Incorporated in the same table are recommendations for source devices.

All three are considered variations of the same format. The last five bits are a length field that designates the number of bytes in the data block associated with the tag. Formats new to this Standard B For 50 Hz systems, the DTV Monitor shall support an additional video format timing of Xp 50 Hz in at least one of two picture 8611b ratios, 4: Only two Picture Aspect Ratios are specified for this interface, For countries using 50 Cex systems, four similar video format timings from A have also been defined in this document.

Picture Aspect Ratio Conversion Example It implies cra, in some cases, the source device e.

Extended Display Identification Data

Audio Format Codes Codes 0 1 2 3 4 5 6 7 8 This section describes the types of InfoFrames that have been defined so far. The format of the short video descriptor shall conform to that shown in Table In that case, this bit specifies whether the preferred timing mode includes native pixel format and refresh rate.

Similarly, System Information, program information, events, service descriptors, etc. Therefore, any DTV Monitor complying with this standard shall support xp [10].

Audio, Second Edition, List of InfoFrame Type Codes For the source device to be able to supply high definition content to any HDTV Monitor, it must be capable of supporting xi and xp since the HDTV Monitor may support only one of the two formats.

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Therefore, in this standard the pixel repeat value can vary from 1 to The only difference is where VESA defines blanking as not including the border while this document includes the border within the blanking interval. If the 11 The data may not be valid if, for example, the source box 8611b already post-processed the signal. To be able to accommodate this extension and other extensions such as the extension containing additional detailed timing descriptorsa DTV Monitor may need to use E-DDC to be able to include more vea one extension.

Default GTF when Basic display parameters byte 24 bit 0 is set. Like A, B is fully backward compatible with cda requires the use of a backward compatible version of the interface used with e.

EIA/CEAB timing question

They now have a purpose as described below. Note that the EDID byte detailed timing descriptor allows for the designation of an interlaced format. In most cases, it is possible to identify the audio by parsing cra actual audio stream e. The new B low-resolution progressive video format timings can consist of one of several frame formats i. A data transfer structure for sending miscellaneous information from a source device to a DTV monitor over an B interface.

The list of tag codes is shown in Table R, G, B, and Y signals shall have quantization levels with the black level corresponding to level 16 and the peak white level corresponding to level If more than one timing extension is needed, then the value shall be the same in all extensions. Timing Parameters for xi 50 Hz Use of this information by the Ceq Monitor is optional.

Advanced Timings|NVIDIA

Articles lacking reliable references from February All articles lacking reliable references All articles with unsourced statements Articles with unsourced statements from October Wikipedia articles needing clarification from June Wikipedia articles needing clarification from October All articles with specifically marked weasel-worded phrases Articles with specifically marked weasel-worded phrases from January The VGA format i.

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This format timing can use either 4: Timing parameters for xi 50 Hz. Examples of the optional capabilities are support of various audio and video formats included in this standard see Table 13 and Table For example, in the Xp case, the pixels on each line are double-clocked.

This format is available in only Its principle use was to indicate to the DTV Monitor the intended picture aspect ratio of a video format timing that is available in more than one picture aspect ratio.

At the time of this writing, there are two options for transmitting uncompressed digital video to the DTV Monitor. Control of closed captioning settings, programs, events, etc. For the purposes of the Line Number and the Pixel Number, the pixel in the upper left hand corner is considered to be in row 1, column 1.

If the source device can determine the preferred picture aspect ratio for the Xp format, then it should use that picture aspect ratio. If the DTV Monitor has provided a timing descriptor for a particular video format decoded in the source, it is recommended that the source send video across the interface without performing format conversion.

Therefore, for the purposes of this standard, the following rules apply for interlaced formats: All bits labeled as F are reserved for the future and shall be set to 0.