Transition-minimized differential signaling (TMDS) is the backbone technology for HDMI, DVI, and MHL display interfaces.
Diodes Incorporated has developed superior equalization technology that can recover weak TMDS signals, enabling transmission over longer cable lengths without compromising reliability or image quality. In addition, equalization helps to minimize jitter, which has an increasingly negative impact the longer signals must run.
Key features for Diodes Incorporated video components include:
The High-Definition Multimedia Interface (HDMI) is a digital replacement for analog video and has become the industry standard for digital audio/video multimedia transmission. Over the years, HDMI has evolved to enable higher resolution and greater color depth. With the move to HDMI 1.4, 2K and 4K ultra HD resolution is supported with expanded support for color spaces; i.e., 3840 x 2160p Quad HD at 24/25/30 Hz or digital theater resolution of 4096 x 2160p at 24 Hz. Version 1.4 also introduced 3D graphics over HDMI, the HDMI Ethernet Channel (HEC) to enable a 100 Mbps connection between two HDMI connected devices to be able to share an Internet connection, and Audio Return Channel (ARC).
DVI (Digital Visual Interface) was designed to transmit uncompressed digital video with support for analog connections, including VGA. Although it is primarily used in computer devices, DVI has been implemented in some consumer electronics equipment such as TVs. However, most new consumer electronic equipment uses all-digital HDMI.
Mobile High-Definition Link (MHL) is a mobile audio/video standard for directly connecting portable consumer electronic devices such as mobile phones and tablets to high-definition televisions (HDTVs) and other home entertainment equipment. It supports 1080p HD video with digital audio over a single cable while simultaneously powering devices and allows TV remotes to control the mobile device and navigation of content.
While the MHL standard requires only 3 pins, handset designs will utilize the established 5-pin micro USB connector. To achieve this, a multiplexor is required to be able to switch between incoming MHL signals and USB 2.0 High Speed signals. Diodes Incorporated has switch products specifically designed combine both USB and MHL onto the same 5-pin connector without compromising signal integrity or reliability.