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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Reserved for Future Use Picture Aspect Ratio Conversion Example Timing parameters for xp Timing parameters for xi Timing Parameters for Xi Timing parameters for xp 50 Hz.
Timing parameters for xi 50 Hz Timing Parameters for xi 50 Hz Timing Parameters for Xp Timing Parameters for Xp 50 Hz. Timing Parameters for Xi 50 Hz Timing Parameters for Xp 25 Hz. Example of options for format conversion Example of problem resulting from double stretch New B Video Format Timings all optional Summary of Video Format Requirements Formats new to this Standard B Valid Pixel Repeat Values for each video format timing Source Product Description InfoFrame format Audio InfoFrame Data Byte Synchronizing signal data for DVI General Format of InfoPacket List of InfoFrame Type Codes Some Typical Audio Applications Speaker allocation information to support multi-channel LPCM audio.
Several new InfoFrames to provide additional information about the source device and stream. It 81b the transmission of digital audio if the specific interface supports digital audio. Like A, B is fully backward compatible with and requires the use of a backward compatible version of the interface used with cez.
In both of these cases, the system would have the same functionality as if both devices were only devices. The relationship of the various versions of is shown in Figure 1. Note ce the potential functionality of each link is set by the lowest version of on either side of the interface.
The actual functionality depends on which options are implemented. Ver 1 Single AR support etc. Ver 2 Dual AR support etc. Vendor Unique Data optional Game formats Functionality Full A Functionality possible Full 861bb Functionality possible Figure 1 Relationship of Different Versions of It is recommended that devices using the DTV profile defined in this standard incorporate a digital content protection system to ensure interoperability and provide protection for copy-protected content traversing uncompressed, digital, high-speed, baseband interfaces.
At the time of this writing, there are two options for transmitting uncompressed digital video to the DTV Monitor. Newer physical interfaces that are expected to be backward compatible with DVI 1. These new interfaces can each be used separately to enable the full capabilities of this standard.
The table is for summary purposes only. Details of the requirements are found in the document text. Ver 1 for extra byte descriptors.
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. If for some reason the source cannot supply that format, the source should supply the next most preferred format, and so on to the last format advertised.
The timing requirements for video formats are described along with requirements for video format discovery. Also, a mechanism allowing the source device to discover all supported formats and the preferred formats of a DTV Monitor is described. Four basic video format timings from are defined in this document for countries using 60 Hz.
Two are high definition formats xi, xpone is enhanced definition xpand the remaining one is standard definition Xi. Additionally, six new 60 Hz format timings have been added in this standard B.
All of these new formats are optional.
Their discovery is handled somewhat differently than the previously defined formats due to the desire to reduce the number of bytes used to discover formats and at the same time maintain backward compatibility with and A. Several of the vudeo cae timings old and new are available ca two different picture aspect ratios.
A method of indicating to the DTV Monitor the picture aspect ratio and colorimetry in which the video should be displayed is included. Several of the new video formats 861h game formats. These formats have pixels per line in the transmitted form, but the number of pixels displayed is less based on a pixel repeat field. For countries using 50 Hz systems, four similar video format timings from A have also been defined in this document.
Two are high definition formats xi, xpone is enhanced definition xpand one is standard definition Xi. Additionally, six new 50 Hz format timings have been added in this standard B.
Several of the video format timings old and new are available in two different picture aspect ratios. The method of indicating to the DTV Monitor the aspect ratio and colorimetry in which the video should be 8661b also applies. Several of these new 50 Hz formats are also game formats. An additional format added to B is a version based on a film frame rate Xp 24Hz. This fea is available in only The ability to send colorimetry and picture aspect ratio information to the DTV was added in A.
At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed in Sec. If the referenced standard is dated, the reader is advised to use the version specified. United States of America?
References listed below shall take precedence over references within these listed references. Some of these documents are drafts of standards that may become normative references in a future release of this standard. General, First Edition, Consumer Cwa, First Edition, Audio, Second Edition, Active Format Description A data dea that describes what portion of the picture actually contains 861bb information i.
It is standardized in DVB, and is partially adopted in this standard.
Extended Display Identification Data
Additional information defined in this standard related to the video being sent from a source device to a DTV Monitor. Region of the display screen that is 81b driven or scanned at either zero luminance or at a uniform luminance; or regions of a picture that are intended to be driven e. In other words, it is the portion of ccea picture that does not contain useful information. Uncompressed, two channel, digital audio.
Exact parameters are determined by the interface specification used with this standard e. This standard B specifies new requirements for the use of this timing extension see Section 7.
A device that receives, decodes, and presents audio and video material that has been xea in a compressed form. The device can be a single unit or it can be constructed from a number of individual components e.
A DTV Monitor can also be any combination of these terms. A DTV Monitor that cez supports both picture aspect ratios of a video format timing e. Simultaneous support is signified by listing both formats in the EDID data structure at the same time.
Extended Display Identification Data – Wikipedia
A video monitor capable of displaying xp in The timing associated with a single frame of video. A video monitor capable of displaying Xi or Xp video in its native format on a InfoFrames are specific to the type of information e. Various InfoFrames are described vea Section 6. A data transfer structure for sending miscellaneous information from a source device to a DTV monitor over an Ceq interface.
This structure first appeared in A. The general structure is shown in Annex G.