This section briefly explains the difficult terms that are not explained in the text of this guide. For details, refer to other commercially available publications.
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Aspect Ratio |
The ratio between an image's length and its height. Screens with a horizontal:vertical ratio of 16:9, such as HDTV screens, are known as wide screens. SDTV and general computer displays have an aspect ratio of 4:3. |
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Composite Video |
A method that combines the video signal into a luminance component and a color component for transmission down a single cable. |
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Contrast |
The relative brightness of the light and dark areas of an image can be increased or decreased to make text and graphics stand out more clearly, or to make them appear softer. Adjusting this particular property of an image is called contrast adjustment. |
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DHCP |
An abbreviation of Dynamic Host Configuration Protocol, this protocol automatically assigns an IP address to equipment connected to a network. |
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Full HD |
A screen size standard with a resolution of 1,280 (horizontal) × 1,080 (vertical) dots. |
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Gateway Address |
This is a server (router) for communicating across a network (subnet) divided according to subnet mask. |
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HDCP |
HDCP is an abbreviation for High-bandwidth Digital Content Protection. It is used to prevent illegal copying and protect copyrights by encrypting digital signals sent over DVI and HDMI ports. Because the HDMI port on this projector supports HDCP, it can project digital images protected by HDCP technology. However, the projector may not be able to project images protected with updated or revised versions of HDCP encryption. |
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HDMI™ |
An abbreviation for High Definition Multimedia Interface. HDMI™ is a standard aimed at digital consumer electronics and computers. This is the standard by which HD images and multichannel audio signals are digitally transmitted. By not compressing the digital signal, the image can be transferred at the highest quality possible. It also provides an encryption function for the digital signal. |
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HDTV |
An abbreviation for High-Definition Television that refers to high-definition systems which satisfy the following conditions:
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Interlace |
Transmits information needed to create one screen by sending every other line, starting from the top of the image and working down to the bottom. Images are more likely to flicker because one frame is displayed every other line. |
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IP Address |
A number to identify a computer connected to a network. |
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Progressive |
Projects information to create one screen at a time, displaying the image for one frame. Even though the number of scan lines is the same, the amount of flicker in images decreases because the volume of information has doubled compared with an interlace system. |
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Refresh Rate |
The light-emitting element of a display maintains the same luminosity and color for an extremely short time. Because of this, the image must be scanned many times per second to refresh the light-emitting element. The number of refresh operations per second is called the Refresh rate and is expressed in hertz (Hz). |
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SDTV |
An abbreviation for Standard Definition Television that refers to standard television systems which do not satisfy the conditions for HDTV High-Definition Television. |
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SNMP |
An abbreviation for Simple Network Management Protocol, which is the protocol for monitoring and controlling devices such as routers and computers connected to a TCP/IP network. |
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sRGB |
An international standard for color intervals that was formulated so that colors that are reproduced by video equipment can be handled easily by computer operating systems (OS) and the Internet. If the connected source has an sRGB mode, set both the projector and the connected signal source to sRGB. |
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SSID |
SSID is identification data for connecting to another device on a wireless LAN. Wireless communication is possible between devices with the same SSID. |
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Subnet Mask |
This is a numerical value that defines the number of bits used for the network address on a divided network (subnet) from the IP address. |
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SVGA |
A screen size standard with a resolution of 800 (horizontal) × 600 (vertical) dots. |
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SXGA |
A screen size standard with a resolution of 1,280 (horizontal) × 1,024 (vertical) dots. |
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Sync. |
The signals output from computers have a specific frequency. If the projector frequency does not match this frequency, the resulting images are not of a good quality. The process of matching the phases of these signals (the relative position of the crests and the troughs in the signal) is called Synchronization. If the signals are not synchronized, flickering, blurriness, and horizontal interference occur. |
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Tracking |
The signals output from computers have a specific frequency. If the projector frequency does not match this frequency, the resulting images are not of a good quality. The process of matching the frequency of these signals (the number of crests in the signal) is called Tracking. If Tracking is not carried out correctly, wide vertical stripes appear in the signal. |
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Trap IP Address |
This is the IP address for the destination computer used for error notification in SNMP. |
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VGA |
A screen size standard with a resolution of 640 (horizontal) × 480 (vertical) dots. |
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XGA |
A screen size standard with a resolution of 1,024 (horizontal) × 768 (vertical) dots. |
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WXGA |
A screen size standard with a resolution of 1,280 (horizontal) × 800 (vertical) dots. |
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WUXGA |
A screen size standard with a resolution of 1,920 (horizontal) × 1,200 (vertical) dots. |