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Digital Rights Management for Consumer Devices
Published in Borko Furht, Darko Kirovski, Multimedia Security Handbook, 2004
Nonetheless, there were concerns about the DVI bus not having any protection. In 1999, Intel defined the High Definition Content Protection (HDCP) technology to protect the DVI bus. HDCP’s keys use the same scheme used in DTCP’s restricted authentication mode. Also, the scheme uses scrambling, not encryption, to actually protect the data. So, HDCP is not a particularly strong protection scheme, but the data it is protecting are not particularly vulnerable. Because HDCP can be inexpensively implemented in the device, it appears as though the designers have achieved a reasonable balance.
Digital Rights Management for Consumer Devices
Published in Borko Furht, Darko Kirovski, Multimedia Encryption and Authentication Techniques and Applications, 2006
Nonetheless, there were concerns about the DVI bus not having any protection. In 1999, Intel defined the High Definition Content Protection (HDCP) technology to protect the DVI bus. HDCP’s keys use the same scheme used in DTCP’s restricted authentication mode. Also, the scheme uses scrambling, not encryption, to actually protect the data. So, HDCP is not a particularly strong protection scheme, but the data it is protecting is not particularly vulnerable. Because HDCP can be inexpensively implemented in the device, it appears as though the designers have achieved a reasonable balance.
Multimedia Systems
Published in Sreeparna Banerjee, Elements of Multimedia, 2019
Present-day video interfaces to televisions and computers use high-definition multimedia interface (HDMI), digital visual interface (DVI), or DisplayPort [18]. VGA was used earlier, but it is an analog signal and so it has been replaced by HDMI, DVI, or DisplayPort connections, which are all digital connections. The similarities between HDMI and DVI include pixel resolution potentials of 1920 × 1080/60 and same transition minimized differential signaling (TMDS) standards. Conversion between HDMI and DVI can be performed using an adaptor cable. When a monitor is being used, HDMI is the input.
The Changing Face of Public Broadcasting in India
Published in IETE Journal of Education, 2023
The analog TV used interlaced scanning to save bandwidth, which is represented by a letter i appended at the end of the resolution number. The letter p represents progressive scanning. In case of interlaced scanning, odd fields start at the left top corner of the picture, and end in the middle of the bottom. The even fields start at top middle and end at the bottom right corner of the picture. The progressive scanning is simpler, all the fields start at the left top corner, and end at the bottom right corner of the picture. The digital TV signal is compressed before transmission, and reconstructed at the receiving end. Thus there is no need for interlaced scanning. The standard video interface for the video signal, between source and display, has been the yellow RCA plug, carrying composite video, sync and blanking signal (CVSB). It is an analog interface and can support image resolution only up to standard definition (SD). The high definition multimedia interface (HDMI), carries digital signals over balanced signal lines, and therefore, can support high definition (HD) video interfacing. The older digital video interactive (DVI) interface, also uses balanced lines for digital signals and can support higher resolution. The DVI, in addition, supports analog primary color signals as well. The HDMI is quite versatile and includes support for digital audio signals as well. Most of the modern day computer monitors have provision for video graphics array (VGA), as well as HDMI interface, and can be successfully used as TV display.