Moving Apple screen images to your TV

Q: I read your column about how to transfer a Windows 10 screen image to a Samsung Smart TV (see tinyurl.com/jto844d.) How could I do the same thing with an Apple ­computer?

Mike Dosch, Eagan

A: There are a couple of ways to transfer the view on your Macintosh computer screen to your HDTV, a process called screen mirroring.

To do it Apple's way, you'll need a newer computer and operating system that can handle the AirPlay feature. Macs that can handle the task include the iMac, Mac Mini, MacBook Air or MacBook Pro models from 2011 or later, Mac Pro models from late 2013 onward and MacBook models from earlier this year. Those Macs must use the operating system OS X Mountain Lion version 10.8, or a newer one.

In addition, you'll need an Apple TV device that plugs into your TV's HDMI port, then wirelessly connects to your Mac. The most basic Mac-to-Apple TV connection, which uses a home Wi-Fi network as an intermediary, requires a second-generation or later Apple TV unit.

If you want to link a Mac directly to your HDTV without a Wi-Fi network, you'll need a third-generation Apple TV and a 2012 or newer Mac running the operating system OS X Yosemite version 10.10, or a newer one. For details, see tinyurl.com/nnldkga.

A non-Apple method for screen mirroring involves linking, via a Wi-Fi network, Google's Chrome Web browser on the Mac and Google's Chromecast device that plugs in to your TV's HDMI port. See tinyurl.com/hfpdpoe. For Mac system requirements and a Chrome browser download site, see tinyurl.com/l7w8wdf and click "Mac."

Tom Madere, LaPlace, La.

A: Google Earth is acting as if your Windows 10 computer doesn't have high enough screen resolution (picture sharpness) to display its images. That can be fixed by changing the PC's DPI, or dots per inch, setting for Google Earth. (While screen resolution is often measured by the number of pixels horizontally and vertically, DPI counts just the pixels in a line 1 inch long.)

To alter the DPI setting, use Windows Explorer to find the Google Earth program on your C drive. Right click the Google Earth application folder, select "properties," then choose "compatibility." Under "settings," uncheck the box in front of "disable display scaling on high DPI settings."