Digital Television
On May 1, 2003, ThinkTV marked the beginning of its conversion to digital technology with the introduction of four new digital program services and a digital simulcast channel for ThinkTV16/WPTD. ThinkTV16's digital channel was UHF channel 58. One year later in May 2004, ThinkTV entered phase two of its digital conversion with the installation of new digital Master Control equipment and the introduction of new digital channels for ThinkTV14/WPTO. ThinkTV14's digital channel was UHF channel 28.
During this period, the digital channels were 16.2 - ThinkTV 16 DT, 16.3 - ThinkTV 16 Again, 16.4 - ThinkTV 16 Create, 16.5 - ThinkTV 16 Ohio, 16.6 - ThinkTV HD; 14.2 - ThinkTV 14 DT, 14.3 - ThinkTV 14 Prime, 14.4 - ThinkTV 14 Learn, 14.5 - ThinkTV 14 World and 14.6 - ThinkTV HD. Note that neither WPTD nor WPTO had an X.1 subchannel; the X.2 subchannels matched their respective analog channels; also, 16.6 and 14.6 carried identical PBS HD programming, which was distinct from the separate analog programming on WPTD and on WPTO.
ThinkTV switched to an all digital service on May 1, 2009, as part of the DTV transition in the United States. On this date, ThinkTV16 ended its digital broadcast on channel 58 and switched channel 16 from an analog broadcast to a digital one. ThinkTV14 ended its analog broadcast on channel 14. It remained on its digital channel, 28, using the PSIP protocol to display its virtual channel as 14.
The subchannels were realigned as shown below. Note that 16.3 was changed from ThinkTV 16 Create to ThinkTV 16 Life later in 2009.
The digital signals of WPTD and WPTO are both multiplexed:
Read more about this topic: WPTD
Famous quotes containing the word television:
“Cultural expectations shade and color the images that parents- to-be form. The baby product ads, showing a woman serenely holding her child, looking blissfully and mysteriously contented, or the television parents, wisely and humorously solving problems, influence parents-to-be.”
—Ellen Galinsky (20th century)