TWAIN  (“never the twain shall meet”) <ul><li>Supported by scanners and imaging applications </li></ul><ul><li>“ Never the...
Scanner configuration features <ul><li>Image type –  Sets the grayscale, color or line art </li></ul><ul><li>Scan mode —  ...
Optical Character Recognition <ul><li>Scan text to graphics image </li></ul><ul><li>Install OCR software to edit and searc...
Scanner connections <ul><li>Older scanners </li></ul><ul><ul><li>Slow parallel ports </li></ul></ul><ul><ul><li>SCSI devic...
Troubleshooting (ASID) <ul><li>Acquire information about the problem </li></ul><ul><li>Simplify by removing any non-critic...
Digital cameras <ul><li>Connect via USB or FireWire </li></ul><ul><li>May or may not require drivers </li></ul><ul><li>Qua...
Resolutions Prosumer and professional grade digital cameras 11x14 inches and larger Professional use; very large prints Ov...
Digital camera memory cards <ul><li>CompactFlash </li></ul><ul><li>Memory Stick </li></ul><ul><li>Secure Digital </li></ul...
Printing images <ul><li>No film development costs </li></ul><ul><li>Store and view photos on computer </li></ul><ul><li>Pr...
Digital camera memory cards (con’t) Memory stick SD card Compact flash memory cards
Digital camera connections <ul><li>Still cameras - USB </li></ul><ul><li>Video camera – Firewire </li></ul><ul><li>Devices...
Memory card readers
Camera connection problems <ul><li>Batteries </li></ul><ul><li>Cable </li></ul><ul><li>Camera mode </li></ul><ul><li>Devic...
Unit summary <ul><li>Described, installed, and resolved issues with CRT displays </li></ul><ul><li>Described, installed, a...
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0_VideoandmultimediaIOdevices3.ppt

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0_VideoandmultimediaIOdevices3.ppt

  1. 1. TWAIN (“never the twain shall meet”) <ul><li>Supported by scanners and imaging applications </li></ul><ul><li>“ Never the twain shall meet” </li></ul><ul><li>TWAIN eases scanner connection </li></ul><ul><li>Most scanners have more full-featured software from manufacturer </li></ul><ul><li>NB. The TWAIN Working Group is a not-for-profit organization which represents the imaging industry. TWAIN’s purpose is to provide and foster a universal public standard which links applications and image acquisition devices. The ongoing mission of this organization is to continue to enhance the standard to accommodate future technologies </li></ul>
  2. 2. Scanner configuration features <ul><li>Image type – Sets the grayscale, color or line art </li></ul><ul><li>Scan mode — Sets to high speed or high quality </li></ul><ul><li>Scan resolution – Sets the DPI (dots per inch) to be used for the scanned image. </li></ul><ul><li>Scaling– Specifies whether the image is the same size as the original or is enlarged or reduced from the size of the original. </li></ul><ul><li>Destination– Sends to a file (converting it from an analog image to a digital file) or directly to a printer (where the scanner functions as a component in a copier) </li></ul><ul><li>Image control – Inverts the image (swap black and white also referred to as a negative image.) , enables color balancing, controls the brightness and contrast of the image, rotates the image , mirrors the image . </li></ul><ul><li>Preview features – Zoom in and out the scan area without affecting the affecting the scanned image, preview what the scanner will output. Preview area usually has a feature to select a specific area of the scanned image to scan to a file or printer. </li></ul><ul><li>Scan– Performs the scan in which the image is scanned and the output is sent to the destination configured in the software. </li></ul>
  3. 3. Optical Character Recognition <ul><li>Scan text to graphics image </li></ul><ul><li>Install OCR software to edit and search docs. </li></ul><ul><li>OCR is good with typed docs </li></ul><ul><li>Handwritten text is difficult for OCR to interpret. </li></ul>
  4. 4. Scanner connections <ul><li>Older scanners </li></ul><ul><ul><li>Slow parallel ports </li></ul></ul><ul><ul><li>SCSI devices </li></ul></ul><ul><li>Current scanners </li></ul><ul><ul><li>USB </li></ul></ul><ul><ul><li>FireWire </li></ul></ul><ul><ul><li>All PnP-compliant </li></ul></ul><ul><li>Use Device Manager to update driver </li></ul>
  5. 5. Troubleshooting (ASID) <ul><li>Acquire information about the problem </li></ul><ul><li>Simplify by removing any non-critical components, shut down unnecessary running programs, and disconnect from the Internet or network. </li></ul><ul><li>Implement by identifying probable causes and implementing potential solutions one at a time. </li></ul><ul><li>Document the error symptoms, the components you removed from the computer, and the solutions you tried and whether they were successful. </li></ul>
  6. 6. Digital cameras <ul><li>Connect via USB or FireWire </li></ul><ul><li>May or may not require drivers </li></ul><ul><li>Quality of picture expressed in mega pixels </li></ul><ul><li>Cameras available from 1 mega pixel to over 8 mega pixels </li></ul>
  7. 7. Resolutions Prosumer and professional grade digital cameras 11x14 inches and larger Professional use; very large prints Over 8 MP “ Prosumer” digital cameras 8x10 inches Large prints 5 to 8 MP Mid-range, consumer-grade, digital cameras 5x7 inches Printing, e-mailing, using on Web if you crop image 3 to 4 MP Camera phones, still shot on digital video cameras, older digital cameras 4x6 inches E-mailing pictures 1 to 2 MP Web cameras (webcams) Broadcasting over the Internet Under 1 MP Found in Max print size Good for Megapixels
  8. 8. Digital camera memory cards <ul><li>CompactFlash </li></ul><ul><li>Memory Stick </li></ul><ul><li>Secure Digital </li></ul><ul><li>SmartMedia </li></ul><ul><li>xD-Picture Card </li></ul>
  9. 9. Printing images <ul><li>No film development costs </li></ul><ul><li>Store and view photos on computer </li></ul><ul><li>Print at home </li></ul><ul><li>Print at store </li></ul><ul><li>Home prints aren’t same quality as store </li></ul>
  10. 10. Digital camera memory cards (con’t) Memory stick SD card Compact flash memory cards
  11. 11. Digital camera connections <ul><li>Still cameras - USB </li></ul><ul><li>Video camera – Firewire </li></ul><ul><li>Devices run on batteries </li></ul><ul><ul><li>Rechargeable </li></ul></ul><ul><ul><li>Disposable </li></ul></ul><ul><ul><li>If disposable, use digital-rated </li></ul></ul><ul><li>Card readers </li></ul><ul><ul><li>Built-in </li></ul></ul><ul><ul><li>External device </li></ul></ul>
  12. 12. Memory card readers
  13. 13. Camera connection problems <ul><li>Batteries </li></ul><ul><li>Cable </li></ul><ul><li>Camera mode </li></ul><ul><li>Device manager </li></ul>
  14. 14. Unit summary <ul><li>Described, installed, and resolved issues with CRT displays </li></ul><ul><li>Described, installed, and resolved issues with LCD displays </li></ul><ul><li>Connected and used speakers and a microphone </li></ul><ul><li>Connected and resolved issues with digital cameras and scanners </li></ul>

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