TMP88CS38 datasheet(144/226 Pages) TOSHIBA

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TMP88CS38/CM38A/CP38A

2007-09-12

88CS38-144

2.15 On-screen Display (OSD) Circuit

The TMP88CS38/CM38A/CP38A features a built-in on-screen display circuit used to display

characters and symbols on the TV screen. There are 384 characters and any characters can be

displayed in an area of 32 columns

× 12 lines (Include 2 columns for solid space). With an OSD

interrupt, additional lines can be displayed. The functions of the OSD circuit meet the

requirements of on-screen display functions of closed caption decoders based on FCC standards.

OSD circuit functions are as follows:

(1) Number of character fonts:

384

(2) Number of display characters:384 (32 columns

× 12 lines)

(3) Composition of character:

Horizontal 16

× vertical 18 dots

(4) Character sizes:

3 kinds for large, middle and small characters

(Selectable line by line)

(5) Character ornamentation function

Fringing function

Smoothing function

Slant function (Italics)

Blinking function

Underline

(6) Solid space

(7) Area plane function: 2 planes

(8) Full-raster blanking function

(9) Display colors

Character colors: 8 or 15 colors (Selectable character by character)

Fringe color:

8 or 15 colors (Selectable page by page)

Background color: 8 or 15 colors (Selectable page by page)

Area plane color: 8 or 15 colors (Selectable each of 2 planes)

Raster color:

8 or 15 colors (Selectable page by page)

(10) Display position: 256 horizontal steps and 512 vertical steps for code plane

: 512 horizontal steps and 512 vertical steps for Area plane

(11) Window function: 512 vertical steps

(12) Half transparency output function

The TMP88CS38/CM38A/CP38A outputs OSD through 3 planes; code, area, and raster. 3

planes function independently. In addition, they are displayed simultaneously. There is the

priority among these 3 planes, so they are displayed on a screen according to the priority.

These 3 planes have the priority such as

Code

> Area > Raster.

TMP88CS38 Datasheet(PDF) 144 Page - Toshiba Semiconductor

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