Compaq dc7900 An Overview of Current Display Interfaces
Compaq dc7900 - Convertible Minitower PC Manual
 |
View all Compaq dc7900 manuals
Add to My Manuals
Save this manual to your list of manuals |
Compaq dc7900 manual content summary:
- Compaq dc7900 | An Overview of Current Display Interfaces - Page 1
An Overview of Current Display Interfaces Introduction 2 The Future of Display Interfaces 2 Monitor and TV Market Trends 2 VGA 4 DVI 6 HDMI 9 DisplayPort 11 Display Interface Comparison Table 13 - Compaq dc7900 | An Overview of Current Display Interfaces - Page 2
PCs, except for connection to TV products. Most recently, a pair of new PC-oriented standards, the Intel Unified Display Interface (UDI) and the VESA DisplayPort (DP) specification sized monitors, the upper end of this market will not increase significantly in terms of size - the majority of desktop - Compaq dc7900 | An Overview of Current Display Interfaces - Page 3
SDTV equipment and start to displace the older analog-only TV interfaces (such as S-Video). HDMI, however, is very unlikely to see much use as a PC monitor connection or graphics output, except for TV connectivity purposes and in the near future as a smaller DVI-compatible output for some notebook - Compaq dc7900 | An Overview of Current Display Interfaces - Page 4
for15-pin high-density Dsubminiature) remains the standard analog video interface of the PC industry, but is beginning to experience limitations. The D- video, and VGA connections can often show the effects of low bandwidth, overall signal loss, and "ghosting" from impedance mismatches in the system - Compaq dc7900 | An Overview of Current Display Interfaces - Page 5
Figure 2 VGA Connector Pinout Table 1 VGA Connector Pinout Pin Signal 1 Red video 2 Green video 3 Blue video 4 Unused (n.c.) 5 Return 6 Red return 7 Green return 8 Blue return 9 +5 VDC 10 Sync. return 11 Unused 12 DDC Data (SDA) 13 Horizontal sync (TTL) 14 Vertical - Compaq dc7900 | An Overview of Current Display Interfaces - Page 6
seven PC-industry companies - HP, Compaq, PC monitors. However, the DDWG group has not met for over five years, and may be considered defunct. Further development of the DVI specification is not expected. DVI is available in two forms: DVI-I, which includes both a VGA-compatible set of analog video - Compaq dc7900 | An Overview of Current Display Interfaces - Page 7
Figure 4 DVI-D Receptacle Connector Figure 5 DVI-I Receptacle Connector Table 2 DVI Pinout Pin Signal Pin 1 TMDS Data 2- 14 2 TMDS Data 2+ 15 3 TMDS Data 2/4 shield 16 4 TMDS Data 4- 17 5 TMDS Data 4+ 18 6 DDC clock (SCL) 19 7 DDC data (SDA) 20 8 Vertical sync (DVI-I only - Compaq dc7900 | An Overview of Current Display Interfaces - Page 8
Table 3 DVI-I (only) Pinout Pin Signal C1 Red video (analog) C2 Green video (analog) C3 Blue video (analog) C4 Horizontal sync (TTL) C5 Common return 8 - Compaq dc7900 | An Overview of Current Display Interfaces - Page 9
of carrying digital audio signals within the video data stream. Like DVI, HDMI also supports the Intel High Definition Content Protection (HDCP the 1.2 specification revision) provides support for up to 165 MHz pixel rates, or about 4.8 Gbit/sec. raw data capacity. The HDMI 1.3 spec is intended - Compaq dc7900 | An Overview of Current Display Interfaces - Page 10
1 shield 6 TMDS Data 1- 7 TMDS Data 0+ 8 TMDS Data 0 shield 9 TMDS Data 0- 10 TMDS Clock+ 11 TMDS Clock shield 12 TMDS Clock- 13 CEC 14 Reserved (no connect) 15 DDC clock (SCL) 16 DDC data (SDA) Signal DDC/CEC ground +5 VDC Hot plug detect (HPD) 10 - Compaq dc7900 | An Overview of Current Display Interfaces - Page 11
protocol to enable support for multiple displays per physical connection, tiling, conditional update, etc., with full backward compatibility with the original spec. DisplayPort was also designed to be both an external (monitor, TV, etc.) connection as well as an internal (panel-level) interface - Compaq dc7900 | An Overview of Current Display Interfaces - Page 12
18 19 19 20 20 Signal Ground Ground AUX channel + Ground AUX channel Hot Plug Detect (HPD) Return DP Power NOTE: Note difference in Lane 0-3 connections, source side vs. sink. Cable assemblies do not carry DP Power (pin 20), which is an output for both. 12 - Compaq dc7900 | An Overview of Current Display Interfaces - Page 13
spec to ~9.6 Gbit/sec. Up to 10.8 Gbit/sec. if all four lanes used. Electrical layer 0.7 Vp-p analog video also supports DPCP, a content protection system specifications are separate and maintained by their respective originators. At this point, HDCP is expected to be the content-protection system - Compaq dc7900 | An Overview of Current Display Interfaces - Page 14
to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors
-
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8
-
9
-
10
-
11
-
12
-
13
-
14
 |
 |
An Overview of Current Display Interfaces
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
The Future of Display Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Monitor and TV Market Trends
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
VGA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
DVI
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
HDMI
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
DisplayPort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Display Interface Comparison Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13