I know, there will be a lot of conflicts with my below comments...but as you asked...
I don't want to get into a fight, but Mridul, there are too many errors, omissions, and contradictions in your statements.
No Reciever/Amplifier/Scaler can upgrade the picture quality...it just convert the signals into digital mode, or enhance the digital picture into smaller microns, to look picture so called better...
Which signal are you converting into Digtal mode as you call it? Whether you are watching a DVD or a TV show, the signals are already digital in nature. The days of Analog TV transmission are gone.
When you say 'enhance the digital picture into smaller microns', I assume you are talking about pixels. The number of pixels is a hardware factor of the TV manufacture and cannot be increased or decreased in random by any software or program. Yes, you can populate lesser number of pixels than are available on a TV. But you cannot 'enhance into small microns', or, in others words, increase the number of pixels or make alterations to the size of each pixel.
But, if you do a test, or kind of survey, you will find out that actually, there is nothing that has happened, apart from being converted to digital, and the pixels becoming digitally upscaled, which in one or the other way of no use, and looses naturality of the original picture...
I am sure the design engineers at Sigma Designs, Anchor Bay, Fardoudja and other companies will all be ready to commit suicide if they read this statement of yours. I have explained in detail in many threads how scalers work and what they do. At the most minimum, a scaler will duplicate pixels to fill an entire screen with an enlarged image. This is usually done in computer monitors and in the early stages of LCD and Plasma displays. Without getting into details, let me tell you that modern scalers undertake some or all of the following tasks:
- Aspect ratio control
- Digital zoom and pan
- Adjustments of Brightness, contrast, hue, saturation, sharpness, and gamma
- Frame rate conversion
- Color point conversion
- Color space conversion (Component to RGB or RGB to Component)
- Mosquito noise reduction
- Block noise reduction
- Detail enhancement
- Edge enhancement
- Motion compensation
- Primary and secondary color calibration that includes hue, saturation, and luminance controls.
If you observe the upscaled picture you will see that the color variations are very less, that is suppose there is a Rose, you select one Petal of, now, observe the same petal in the original 720p version, then upscale it to 1080i version... In 720p version there will be atleast 100 color variations of Red to white, where in 1080i the color variations will be countable and only static..
Its the same concept of HD Ready TV and a Full HD TV...
I just don't know what to say. A scaler reduces color saturation? Even the most incompetent designer will leave the color saturation alone if he can't improve upon it.
So, its just a new way of selling products...and people like Denon, Cambridge, and all biggies, never give importance to the upscaling part of the Receiver, where guyz like Onkyo and all, count there system the best because of this...
(i) Other than the lowest models, Denon has high end scalers from companies such as Fardoudja, Anchor Bay and others in all their receivers.
(ii) Cambridge Audio is a very small player in the AVR market. The market in controlled by Denon, Onkyo and Yamaha. Companies such as Meridian have been having scalers for years. Do you know that Merdian has a scaler that can convert a 1080P signal by 10 times
? And they have a projector that can actually display that level of images?
(iii) In the year 2007-2008, Onkyo sold over 55% of the world's AVRs. In addition, Onkyo's Integra and Pro range of processors and amplifiers are stuff of legends. I dont understand how you can call them a 'smallie'.
(iv) One AVR manufacturer who does not have scalers built in is Maramtz, but their reasons are differemt. It has nothing to do with the capabilities of a scaling engine. They reasoned that DVD Players that scale were available in abundance, TV displays have inbuilt de-interlacers and even scalers, and Blu-Ray were around the corner - so why bother with scaling in the AVR also?