Display Interfaces

Standards for Analog Video -Part II: The Personal Computer (Display Interfaces) Part 1

Introduction For over 30 years, broadcast television represented essentially the only electronic display system, and display interface, in truly widespread use. Various forms of electronic displays were in use in many applications, notably in test and measurement equipment and in early computing devices, but these were for the most part “embedded” display applications in which […]

Standards for Analog Video -Part II: The Personal Computer (Display Interfaces) Part 2

Workstation Display Standards The engineering workstation industry, as previously noted, developed its own de facto standards separately from those of the PC market. As was the case with the PC, there were still no true industry standards, although there was some degree of commonality in the design choices made by the manufacturers of these systems. […]

Digital Display Interface Standards Part 1

Introduction While the history of analog display interfaces can be viewed as starting with television and then moving into the computer field, digital display interfaces took the opposite course. This is not surprising; while computing systems may have first been developed in the analog domain, the digital computer very quickly came to be the only […]

Digital Display Interface Standards Part 2

PanelLink™ and TMDS™ In the mid-1990s, a small Silicon Valley company, Silicon Image, Inc., introduced its “PanelLink™” interface system, intended as an alternative to the LVDS interface of National Semiconductor and Texas Instruments. Conceptually, PanelLink was similar to LVDS – a flat-panel interface system which serialized the data to be transmitted onto several differential data […]

Digital Display Interface Standards Part 3

The Apple Display Connector Some mention should also be made of the Apple Display Connector (ADC), although this is a proprietary design used (to date) only in Apple Computer Corp. systems. In many ways, the ADC resembles both the VESA Plug & Display connector (in the “P&D-A/D” form) and the Digital Visual Interface standard. Like […]

Additional Interfaces to the Display Part 1

Introduction While the subject of this topic so far has primarily been the transmission of image information from any of a number of different sources to the display device, there is very often a need to convey additional types of data between the two. Examples of the functions enabled by additional or supplemental interfaces between […]

Additional Interfaces to the Display Part 2

ICC Profiles and the sRGB Standard Before moving on to other physical and electrical interfaces often used with displays, we should mention two additional standards that relate to the problem of display identification. Prior to the introduction of the DDC and EDID standards, as noted above, the host system had no practical means of determining […]

Additional Interfaces to the Display Part 3

Supplemental General-Purpose Interfaces As noted previously, the recent trend has been for more general-purpose interfaces to be included in the display interface definition, along with the primary video channel. This permits a wide variety of additional data and control functions to be communicated to the display. In addition to providing identification and control of the […]

The Impact of Digital Television and HDTV (Display Interfaces) Part 1

Introduction This is especially true when considering the case of high-definition television, or “HDTV,” as it has developed over the last several decades. HDTV began simply as an effort to bring significantly higher image quality to the television consumer, through an increase in the “resolution” (line count and effective video bandwidth, at least) of the […]

The Impact of Digital Television and HDTV (Display Interfaces) Part 2

Video Compression Basics In short, it was the availability of practical and relatively low-cost digital compression and decompression hardware that made digital HDTV possible. This same capability can also be exploited in another way, and has in commercial systems – by reducing the channel capacity required for a given transmission, digital compression also permits multiple […]