OSD controlling system and controlling method thereof
An exemplary on-screen display (OSD) controlling system ( 1 ) includes an extended display identification data integrated circuit (EDID IC, 12 ) and a scalar integrated circuit (IC, 13 ) electrically connected to the EDID IC. The EDID IC includes a read-write part ( 122 ). The scalar IC includes a micro-controller unit (MCU, 131 ). The MCU is configured for processing data of the read-write part of the EDID IC. Because the scalar IC is connected to the EDID IC and can process the data stored in the read-write part, individualized information can be inputted by a user and displayed. Thus, the OSD controlling system can satisfy the demand for customization of an OSD.
1 . An on-screen display (OSD) controlling system comprising:
an extended display identification data integrated circuit (EDID IC) comprising a read-write part; and
a scalar integrated circuit (IC) electrically connected to the EDID IC, the scalar IC comprising a micro-controller unit (MCU), the MCU configured for processing data of the read-write part of the EDID IC.
2 . The OSD controlling system in claim 1 , wherein the read-write part is a read-write memory.
3 . The OSD controlling system in claim 2 , further comprising an interface, the interface being electrically connected with the EDID IC.
4 . The OSD controlling system in claim 3 , wherein the interface supports an Inter-Integrated Circuit (I 2 C) protocol.
5 . The OSD controlling system in claim 3 , wherein the interface is also electrically connected with the scalar IC.
6 . The OSD controlling system in claim 5 , wherein the interface is one of a video graphics array (VGA) interface and a digital visual interface (DVI).
7 . The OSD controlling system in claim 1 , wherein the read-write part of the EDID IC comprises an identifier; wherein if the identifier is locked, the data of the read-write part cannot be processed; and if the identifier is not locked, the data of the read-write part can be processed.
8 . The OSD controlling system in claim 1 , wherein the scalar IC further comprises a character library, the character library storing characters and graphics supported by the OSD controlling system in the form of codes.
9 . The OSD controlling system in claim 1 , wherein the scalar IC further comprises a buffer, the buffer storing function programs and resources of characters and graphics.
10 . The OSD controlling system in claim 1 , wherein EDID IC communicates with the scalar IC through an Inter-Integrated Circuit (I 2 C) protocol.
11 . The OSD controlling system in claim 1 , wherein the EDID IC further comprises a read-only part.
12 . An on-screen display (OSD) controlling method utilizing an OSD controlling system, the OSD controlling system comprising an extended display identification data integrated circuit (EDID IC) and a scalar integrated circuit (IC) electrically connected with the EDID IC, the EDID IC comprising a read-write part, the method comprising:
inputting information to be displayed;
transforming the inputted information into codes according to a convention, and storing the codes in the read-write part of the EDID IC; and
reading and executing the codes stored in the read-write part of the EDID IC, and thereby displaying the inputted information.
13 . The OSD controlling method in claim 12 , further comprising the following before inputting the information to be displayed:
reading the state of a write operation function of the EDID IC, wherein if the write operation function of the EDID IC is not locked, the method proceeds to inputting the information to be displayed.
14 . The OSD controlling method in claim 13 , wherein the EDID IC further comprises a read-only part, and the method further comprises reading the read-only part before reading the state of the write operation function of the EDID IC.
15 . The OSD controlling method in claim 12 , wherein the scalar IC comprises a character library and a buffer, the character library storing characters and graphics supported by the OSD controlling system in the form of codes, the buffer storing function programs and resources of the characters and the graphics.
16 . The OSD controlling method in claim 15 , wherein the convention is a transformation rule between the characters, the graphics, the programs, and the resources stored in the character library and the buffer and the codes.
17 . The OSD controlling method in claim 12 , wherein the read-write part of the EDID IC comprises an identifier, the identifier selectably having a locked state and an unlocked state.
18 . The OSD controlling method in claim 12 , further comprising the following between transforming the inputted information and reading and executing the codes:
setting the identifier according to whether the inputted information is going to be displayed or not, wherein if the inputted information is going to be displayed, the identifier is not locked, and if the inputted information is not going to be displayed, the identifier is not locked.
19 . The OSD controlling method in claim 18 , further comprising the following between setting the identifier and reading and executing the codes:
sending a Reset instruction to trigger a display device to refresh a display thereof.
20 . The OSD controlling method in claim 19 , further comprising the following between sending the Reset instruction and reading and executing the codes:
reading the identifier, and if the identifier is not locked, proceeding to reading and executing the codes.