STV9937

Horizontal frequency up to 150 kHz
I²C interface for microcontrollers with slave address BA(h) in Read and Write modes PictureBoost

Pixel clock (FPIXEL1) for the PictureBooST
(PB) from 30 to 60 MHz synchronised either on Hsync or on Hfly: CLK1
Window position programmable by RGB or I2C interface
Video Analog inputs with comparator on three channels
Three 8 bit registers for other data,programmable by RGB OSD
On-chip Pixel Clock Generator (FPIXEL2) from 7.68 MHz to 120 MHz, CLK2
OSD clock synchronized on Hsync or Hfly
Programmable horizontal resolutions from 384 to 1524 dots per scan line
4 independent windows all with character display
Overlapping windows with automatic control of display priorities and scrolling menu effects
Independent and programmable displays,positions and sizes for each window
Transparent or 8 programmable background colors for each window
Window size up to 16 rows of 32 characters
Each window has its own bordering or shadowing effects with programmable color,height and width
Each window can be separately erased
Programmable common positioning to easily control centered display
496 standard and 16 multi-color characters or graphic fonts in ROM. Character fonts can be customized using a ask-programmable ROM
Characters
Common character height and row space.Character height from 18 to 127 lines and space lines from 0 to 62 split above and below character rows
12 x 18 dot matrix per character
Display of up to 640 characters
Programmable shadow effects for characters in each separate window
32 programmable background, foreground,blinking character colors for characters (8 possibilities per window)
8 selectable colors for standard characters
Transparent and 8 selectable colors for background
On-Screen Effects
Fade-in/Fade-out effects
Possibility of full-screen display with a selectable color

The STV9937 is an Advanced On Screen Display generator for CRT monitors. It includes a specific rchitecture allowing multiple menu displays, a built in 512 character ROM and the Picture BooSTTM system.

The patented Picture BooSTTM feature allows images to be boosted either within a window, a screen area or even over the entire screen.
 
Using traditional architecture (OSD + Preamp STV9212) and without any additional devices on the CRT board, Picture BooSTTM boosts the brightness and sharpness of the video on CRT displays giving a TV like effect.

The STV9937 can drive Picture BooSTTM either through the VGA cable (using RGB or DDC),through the USB channel via the MCU or through the OSD menu (the registers can be accessed by the MCU via I²C).

The STV9937 embeds the RGB data decoder, the Picture BooSTTM Control Registers and the Picture BooSTTM signal generator.
Along with the Picture BooSTTM and traditional OSD features, the STV9937 allows a simultaneous display of up to four menus anywhere on the screen. Each of the four independent windows, all displaying characters, can be overlapped and display priorities are automatically controlled.
Window sizes and positions are independently programmable as well as scrolling menu effects.
Programming of the general OSD and of the 4 windows is controlled by an I²C bus in Read and Write modes, to suit the various CRT displays.
Associated with an easily programmable character height, the internal PLL generates the programmable pixel clock, without using a crystal oscillator, that defines the character width making the device suitable for multi-sync applications.
A maximum of 640 characters, defined in the mask-programmable ROM, are distributed among the 4 windows and displayed simultaneously.