Yeah I am hooked up to HDTV cable box (720P) atm and it's ok. The reason I asked this question in the first place because in both my TV and Blu Ray manual it says this ( the part in bold.)
Connect an HDMI Cable between the HDMI IN (1,2 or 3) jack on the TV and the HDMI jack on the DVD Player or Cable Box/Satellite receiver (Set-Top Box)
What is HDMI?
- HDMI(High-Definition Multimedia Interface), is an interface that enables the transmission of digital audio and video signals using a single cable.
- The difference between HDMI and DVI is that the HDMI device is smaller in size and has the HDCP (High Bandwidth Digital Copy Protection) coding feature installed
Each DVD Player or Cable Box/Satellite receiver (Set-Top Box) has a different back panel configuration.
The TV may not output sound and pictures may be displayed with abnormal color when DVD players/Cable Boxes/Satellite receivers supporting HDMI versions older than 1.3 are connected. When connecting an older HDMI cable and there is no sound, connect the HDMI cable to the HDMI IN 1 jack and the audio cables to the DVI IN (HDMI1) [R-AUDIO-L] jacks on the back of the TV. If this happens, contact the company that provided the DVD player/Cable Box/Satellite receiver to confirm the HDMI version, then request an upgrade.
HDMI cables that are not 1.3 may cause annoying flicker or no screen display.