WinI2C-DDC

WinI2C/DDC is a professional tool that allows to control display devices in Windows environment via DDC/CI protocol. It allows to send DDC/CI commands via standard video cable (VGA, DVI, HDMI) and control display devices that support DDC/CI protocol: CRT/LCD monitors, projectors, and plasma displays. WinI2C/DDC library supports many types of video chips (nVidia, ATI, Intel, S3, and SiS) and configurations with several monitors.

WinI2C/DDC library is compatible with Windows 2000/XP/2003/Vista/Windows7/Windows8, it supports many types of video chips (nVidia, ATI, Intel, S3, SiS, Matrox, etc) and configurations with several monitors. Also WinI2C/DDC provides a COM interface for all API functions so you can simply use it in VB or such .NET languages as VB.NET or C#. The following Windows 64bit platforms are supported as well: Windows 2003 x64, Windows XP x64, Windows Vista x64, Windows7 x64, Windows8 x64.

WinI2C/DDC is the fastest and cost-effective way to create such software as color calibration solutions or OSD replacement utilities. The WinI2C/DDC library can be very useful in a lot of projects, for example, it can be integrated into any asset management software for providing all necessary information about installed display devices.

WinI2C/DDC can also be used for In System Programming (ISP) via VGA/DVI, for example, by OEM monitor manufacturers for updating the firmware of their monitors.

I2C (Inter-Integrated Circuit) is a multi-master serial computer bus invented by Philips that is used to attach low-speed peripherals to a motherboard, embedded system, or cellphone. I2C uses only two bidirectional open-drain lines, serial data (SDA) and serial clock (SCL), pulled up with resistors. Typical voltages used are +5 V or +3.3 V although systems with other, higher or lower, voltages are permitted. The I2C reference design has a 7-bit address space with 16 reserved addresses, so a maximum of 112 nodes can communicate on the same bus. The most common I2C bus modes are the 100 kbit/s standard mode and the 10 kbit/s low-speed mode, but clock frequencies down to zero are also allowed. Recent revisions of I2C can host more nodes and run faster (400 kbit/s Fast mode and 3.4 Mbit/s High Speed mode), and also support other extended features, such as 10-bit addressing.

I2C is the basis for the VESA Display Data Channel (DDC) interface, it allows to control through the software the settings of a graphical terminal, such as a monitor; with this standard the monitor can directly communicate with the video card. DDC is based on I2C architecture, its advantages are the low cost and its reliability in transmitting the data. The DDC link is carried on three pins – data, clock and ground – in a 15-pin VGA connector, a DVI connector or an HDMI connector. Using DDC, a monitor can inform the video card about its properties, such as maximum resolution and color depth. The video card can then use this information to ensure that the user is presented with valid options for configuring the display.

DDC/CI protocol (CI means “command interface”) is an extension to DDC specified by VESA. It allows a computer with a suitably designed graphics adapter to adjust monitor parameters such as brightness and colour balance, or to initiate degaussing.

Extended display identification data (EDID) is a data structure provided by a computer display to describe its capabilities to a graphics card. It is what enables a modern personal computer to know what kind of monitor is connected. EDID is defined by a standard published by the Video Electronics Standards Association (VESA). The EDID includes manufacturer name, product type, phosphor or filter type, timings supported by the display, display size, luminance data and (for digital displays only) pixel mapping data. The EDID is often stored in the monitor in a memory device called a serial PROM (programmable read-only memory) or EEPROM (electrically erasable PROM) that is compatible with the I2C bus.

WinI2C/DDC is a strong application that enables you to use the DDC/CI protocol in order to control the display devices connected to your computer. It allows you to send DDC/CI commands via the standard video cable (VGA or DVI) and control all display devices that support the DDC/CI protocol: CRT/LCD monitors, projectors, plasma panels, etc.

WinI2C/DDC library supports many types of video chips (nVidia, ATI, Intel, S3, SiS, Matrox, etc) and configurations with several monitors. Also WinI2C/DDC provides a COM interface for all API functions so you can simply use it in VB or such .NET languages as VB.NET or C#.

WinI2C/DDC is the fastest and cost-effective way to create such software as color calibration solutions or OSD replacement utilities. The WinI2C/DDC library can be very useful in a lot of projects, for example, it can be integrated into any asset management software for providing all necessary information about installed display devices.

WinI2C/DDC can also be used for In System Programming (ISP) via VGA/DVI, for example, by OEM monitor manufacturers for updating the firmware of their monitors.WinI2C/DDC is a powerful solution that allows you to control display devices in the Windows environment via the DDC/CI protocol. It allows you to send DDC/CI commands via the standard video cable (VGA or DVI) and control all display devices that support the DDC/CI protocol: CRT/LCD monitors, projectors, plasma panels, etc.
WinI2C/DDC is the fastest and cost-effective way to create such software as color calibration solutions or OSD replacement utilities. The WinI2C/DDC library can be very useful in a lot of projects, for example, it can be integrated into any asset management software for providing all necessary information about installed display devices.
WinI2C/DDC can also be used for In System Programming (ISP) via VGA/DVI, for example, by OEM monitor manufacturers for updating the firmware of their monitors.

The WinI2C/DDC API allows you to perform all necessary operations with display devices:

– Enumerate all installed monitors.
– Get DDC/CI monitor capabilities.
– Read EDID (extended display identification data) directly from the monitor. EDID contains basic information about the monitor and its capabilities, including vendor information, maximum image size, color characteristics, factory preset timings, frequency range limits, and character strings for the monitor name and serial number.
– Read and change such monitor settings as brightness, contrast, screen position, size, color gain, etc.
– Execute any commands that the display device supports via DDC/CI.
– A wide set of advanced operations, for example, changing EDID or display’s firmware.

Key features

The WinI2C/DDC API allows you to perform all necessary operations with display devices:

• Enumerate all installed monitors.
• Get DDC/CI monitor capabilities.
• Read EDID (extended display identification data) directly from the monitor. EDID contains basic information about the monitor and its capabilities, including vendor information, maximum image size, color characteristics, factory preset timings, frequency range limits, and character strings for the monitor name and serial number.
• Read and change such monitor settings as brightness, contrast, screen position, size, color gain, etc.
• Execute any commands that the display device supports via DDC/CI.