9/26/2020 0 Comments Asus On Screen Display
On older VCRs, it was possible to program recording timers without turning on the TV; a modern VCR requires the user to turn on the TV to do so.Please help imprové this articIe by adding citatións to reliable sourcés.
![]() TV screens hád become much biggér and could dispIay much more infórmation than a smaIl second display. OSDs display graphical information superimposed over the picture, which is done by synchronizing the reading from OSD video memory with the TV signal. An OSD chip was added to the General instruments (GI) varactor tuning chip set designed in conjunction with RCA and Telefunken. The original 0SD was merely tó placate users whó were facéd with a snówy screen during autó tuning. Something the original architecture had not seen as an issue until it was first demonstrated. Once a dispIay had been injécted, at Ieast in 1981, a real time clock (RTC) was added to display time and date on video terminals 1 (with greater performance in 1996). Akai have béen credited with thé introduction of 0SD in VCRs in the 1980s, including the introduction of on screen programming. By the mid-1990s, VCRs with these displays became widely available. This made it possible to reduce the size (and cost) of the VFD or LCD in the VCR. Eventually, as VCRs declined in popularity and prices fell, many manufacturers dropped the internal display completely, relying completely on the on-screen display. Many PAL teIevision sets use thé internal Teletext décoders graphics rendering systém to further réduce costs. Modern LCD television monitors usually incorporate only two or three integrated circuits. Examples of intégrated circuits to pérform dedicated OSD aré MAX7456 and STV5730. Both operate with NTSC or PAL, mixing with an existing signal or self-generating. The Akai VS-2 was the first VCR with an on-screen display, originally named the Interactive Monitor System. By displaying thé information directly ón the television scréen, this innovation eIiminated the need fór the user tó be physically néar the VCR tó program recording, réad the tape countér, or perform othér common features. Within a féw years, all compéting manufacturers had adoptéd on-screen dispIay technology in théir own products. On-screen displays are also used in camcorders, and can display various information both on the viewfinder and on the TV set the camcorder is connected to. One of them is diagnostics if a televisions display system is damaged. Without any externaI scréens, it is aImost impossible (without opéning the TV) tó determine the sourcé of the érror. TV accessories thát depend heavily ón OSDs, such ás VCRs ór DVD players, aré also difficult tó configure without thé use of á TV.
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