Does anyone know if a television or computer monitor existed in the 1970's that had a graphical display of a volume or brightness control? If the volume or brightness changed, a bar or a character should be displayed to show the change in volume or brightness. Do any articles possibly exist on the subject?

Thanks.

Magnavox had the "Star System" TV in the 70's that had on screen channel numbers, it may have done volume too but I don't think it did the video adjustments?

Eric

Heath and of course RCA, both with their respective 2000 models had on screen time and/or channel displays but I doubt that anyone had a set with other types of OSD's.

Anthony

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Forgot to mention, the Heathkit GR-2000 set with OSD came out in about '73 and was only predated by the RCA G-2000 which was over twice as much money.

Anthony

Don't forget Zenith- They got in on the OSD bandwagon pretty early also. I've got a set outside (yes, several years still working) that has OSD with a metal cabinet, but I'm not sure on displaying the adjustments besides time and station. They seemed to be on the "cutting edge" during the late 70's early 80's.

Cory

I had a RCA CTC-92 from 1979 or so that used a delta gun crt and had ultrasonic remote, it had an on-screen display of channel and time. It was scrapped out for parts because the CRT was extremely weak, even when the filament voltage was boosted.