A digital photo frame is a picture frame that displays digital photos without the need to print them or use a computer. The digital photo frame may also be able to display the photos on a TV set.
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A digital photo frame is a picture frame that displays digital photos without the need to print them or use a computer. The digital photo frame may also be able to display the photos on a TV set.
Features
Some digital photo frames can only display JPEG pictures. Most digital photo frames display the photos as a slideshow and usually with an adjustable time interval. They also can send photos to the printer.
However, others support additional multimedia content, including movie clips recorded in a digital camera's movie mode, MPEG video files and/or MP3 audio.
Certain frames can also load pictures over the Internet from RSS feeds, photo sharing sites such as Flickr, Picasa and from e-mail. Such networked models usually support wireless (802.11) connections.
Other ones can display txt files.
Digital photo frames typically display the pictures directly from a camera's memory card, though certain frames also provide internal memory storage. Certain frames allow users to directly upload pictures to the frame's memory via a USB connection. However, few digital photo frames have built-in memory due to the high price of in-built memory.
Some of them also include a rechargeable battery.
Most 7 inch (17.5cm) models show images at 430 x 234 pixels. With some models the width of each landscape image is stretched to achieve an aspect ratio of 16:9, which results in very noticeable distortion.
Implementation
A digital photo frame consists of three main parts, the LCD-panel, the PCB and the outside frame:
- The panel can have either an analog or digital interface and varies in size.
- The PCB is the heart of the digital photo frame, as it includes the device's software.
Security Issues
Some digital photo frames manufactured in China have been discovered with a computer Trojan Horse embedded in their firmware.
The Trojan Horse, which Computer Associates calls Mocmex, recognizes and blocks detection by most security vendor software, as well as the security and firewall mechanisms in Microsoft Windows. Mocmex downloads files and gives them random names, thus requiring a special program to disinfect the PC.
See also
- Internet radio device
- Mocmex
External links
- HSW: How Digital Picture Frames Work
