DE9320527U1 - Adjustable monitor - Google Patents

Description

29 September 1994 TH/pi 93 071G

Adjustable monitor

The present invention relates to an adjustable monitor for a screen display.

A conventionally designed monitor often has a multi-scan function for different display types. Each display type displays a display pattern. Therefore, a variety of functions must be set in advance to obtain an appropriate display image. Furthermore, the user must set the display pattern according to a display type according to his or her preferred software. All these requirements make the designs and procedures necessary for setting complicated for the user and designer.

Newer designs use a digital-to-analog converter to control the analog circuit of the monitor. Such a converter can also receive the control command from the user's control panel and set all the setting parameters for each display type and the monitor's EEPROM, as shown in Fig. 2.

The invention is based on the object of creating a novel construction with which control commands can be received directly from the connected system without using the control panel on the monitor.

This object is achieved according to the invention by a monitor according to claim 1.

:;&ugr;·&ugr;9·9*&igr;·

The following detailed description of an embodiment in conjunction with the drawing serves to better explain the invention. They show:

Fig. 1 is a block diagram of the digital control monitor according to the invention;

Fig. 2 is a block diagram of a conventional digital control monitor;

Fig. 3 is an illustration of an original display image; Fig. 4 is an illustration of the microphone setting menu;

Fig. 5 a representation of the

Horizontal phase adjustment;

Fig. 6 a representation of the

Horizontal phase adjustment;

Fig. 7 shows the fixed polarity of HSYN and VSYN; and

Fig. 8 shows the coded polarity of HSYN and VSYN.

Referring now to Fig. 1, a microprocessor 1 is capable of controlling and storing a display image such as the geometric display (VSIZE, VPHASE, HSIZE, HPHASE, PINCUSHION etc.), brightness, contrast, color purity etc. The microprocessor 1 can also detect the signals from the connected system 2 such as synchronous signals (HSYS, VSYN), display signals (R, G, B) and monitor identification signals (IDO-2) etc.

■ «** t»

The system 2 described above may be a personal computer or a workstation. The system 2 may have a program stored in memory. The program may be operated via a hot key on a keyboard 3 using an operating system (such as DOS) or executed via a command within the operating system. The program may run under a software system such as Windows, OS2, IJNIX, or the image may run under any specific operating system. The program may also be executed/operated via a display device (such as a mouse) or other methods.

When the program is running, the setting menu of the monitor is directly changed on the original display image, as shown in Fig. 3 and 4. Therefore, the original display image should be saved in the memory or disk so that the original display image can be restored after adjusting the monitor.

In all setting operations, the functions are selected using the numeric keys or the mouse, after which the functions are set using the arrow keys, for example, selecting the four HPHASE function as shown in Fig. 4 to determine the functions that need to be set. Fig. 5 shows that the submenu that can be set by the user can be used to move the display directly.

When setting the submenu as shown in Fig. 5, the user can press the arrow key or use the display device (mouse) toward the displayed block. Then the display on the screen will be immediately set to a number as shown in Fig. 6.

The following description shows how all function selection and setting processes are coded and fed to the monitor:

HSYN and VSYN are widely used in screen synchronization across the monitor and are used to identify different types of monitors and display modes. In a current multi-scan monitor, an analog or digital circuit is used to distinguish the different display modes. Refer to Fig. 7. Each mode has a fixed HSYN and VSYN frequency and polarity and the monitor has a predetermined circuit with respect to these signals. _Λ

Although the microprocessor 1 is used in the monitor according to the invention, if the polarity is fixed, the circuitry of the monitor can be predetermined. When the system 2 is initiated by the user's request for adjustment, it can use the previously defined alternating polarity signals to output HSYN and VSYN for initiation and adjustment. The adjustment command from the user can be encoded on the alternating polarity signals and decoded by the microprocessor. Refer to Fig. 8 for this. To eliminate the noise within the alternating polarity period, the signal must be sampled at the midpoint between VSYN and HSYN, where (1,0) means VSYN-I and HSYN-O. A guide code frequency such as (0,0), (0,1), (1,1), (1,0) corresponds to a required initiation adjustment operation. The data is therefore encoded with two bits each time and each byte is encoded four times and decoded into one byte by microprocessor 1. The code "FF" (llllllll) is reserved for the termination of the setting command.

♦,·

From the foregoing it is clear that a PC system using an analog VGA interface (address input "3c2", bit 7 and bit 6) 10 can control the polarity of HSYN and VSYN without additional circuitry.

Claims (4)

9 August 1994 TH/pl 93O7IG Protection claims: 1. Adjustable monitor for a screen display with a microprocessor (1) for controlling and storing the display image with the aid of a setting command and a system (2) connected to the microprocessor (1) for issuing the setting command via the synchronization signals (HSYN, VSYN), display signals (R, G, B) and monitor identification signals (ID0-ID2), the above-mentioned signals being detected by the microprocessor (1). 2. Monitor according to claim 1, wherein the system (2) is formed by a personal computer or a workstation. 3. A monitor according to claim 1, wherein the adjustment signals are encoded into the original display signals from the system (2). 4. Monitor according to claim 1, wherein the adjustment command includes the display image, such as the geometric display (VSIZE, VPHASE, HSIZE, HPHASE, PINCUSHION etc.), brightness, contrast, color purity etc.