JPH11167479A - Multi-input monitor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring device for communicating between connected information processors by window-displaying data of plural information processors by plural input interfaces. SOLUTION: First and second interface parts 19 and 20 receive display data and communication data from first and second PC 2 and 3. At a monitor device 1, a communication control means identifies control information on the display picture of the second PC 3 from communication data received by the part 19. In addition, the displays of a first display picture based on display data and communication data received by the part 19 and a second display picture based on display data and communication data received by the part 20 are controlled according to control information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device,
In particular, the present invention relates to a monitor device connected to an information processing device such as a personal computer (PC) and a workstation (WS).

[0002]

2. Description of the Related Art A conventional display device has one interface for receiving display data from a PC, such as a multi-scan monitor "DC1552" manufactured by Hitachi. The display device performs display according to display data sent via the interface.

[0003]

In the prior art described above, there is one interface for display data, and one monitor is connected to one PC. However, since connection of a plurality of PCs is not considered, when connecting a plurality of PCs, the only option is to switch the display data using a switching device such as an external switcher. .

[0004] It is an object of the present invention to provide a multi-input monitor device capable of connecting a plurality of information processing devices to solve the above-mentioned problems.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is a monitor device that receives display data and performs display in accordance with the display data. A first interface unit for receiving display data and communication data from the information processing apparatus; a display unit for displaying a display screen; and a second interface unit based on communication data received by the first interface unit. Communication control means for identifying control information on a display screen based on the display data and communication data received by the first interface unit, a display screen based on the display data and communication data received by the first interface unit, and the second interface unit The display data and the display screen based on the communication data received by the communication control means. And a display control unit for controlling the display in accordance with control information. In this case, the communication control unit can transfer the communication data received by the second interface unit to the first interface unit. Further, the communication control means can transfer the communication data received by the second interface unit to the first interface unit.

An information processing apparatus connected to a monitor device having first and second interface units for receiving display data and communication data, wherein the control means generates the display data and the communication data; Communication control means for transferring display data and the communication data to the monitor device, wherein the control means generates control information about a display screen of another information processing device connected to the monitor device, And the data may be transferred by the communication control means.

[0007] According to the present invention, a plurality of PCs, which conventionally could only be connected to one PC, can be connected. In addition, since communication control means for controlling communication between information processing apparatuses is provided, communication between PCs, such as file exchange, can be performed on the superimposed display screen.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an example of use of a monitor device according to an embodiment of the present invention.

In FIG. 1, a monitor device 1 is a liquid crystal monitor or the like, and includes a first and a second information processing device (hereinafter, referred to as a first information processing device).
PCs (referred to as PCs) 2 and 3 are provided, and include first and second interface units for receiving display data and communication data from them, and a display unit for displaying the display data on a display screen. First PC2 and second PC3
Generates display data and communication data, and transfers the generated display data and communication data.

The first PC 2 is connected with a keyboard 4 and a mouse 5 of a user interface for receiving an instruction from a user. Keyboard 4 and mouse 5
Receives the instruction on the first PC 2 and
The instruction in PC3 is also accepted.

In FIG. 1, a first P
A display based on the display data and the communication data transferred from the second PC 3 is displayed on a display screen based on the display data and the communication data transferred from the C2.

FIG. 2 shows a display example of a screen of the monitor device according to the present embodiment.

In FIG. 2, the display screen 6 is the first PC 2
Is a display screen based on the display data and the communication data transferred from, and has a resolution of, for example, 1024 × 768 dots. The display screen 7 is a display screen based on display data and communication data transferred from the second PC 3, and initially has a display resolution designated by the second PC, for example, 6
It is assumed that the image is displayed with 40 × 480 dots. Also,
In FIG. 2, 8 is the vertical coordinate of the upper left corner of the window display, 9 is the vertical size of the window display, 10 is the horizontal coordinate of the upper left corner of the window display, and 11 is the horizontal size of the window display. . In the case of the above-mentioned resolution, the horizontal size 11 of the window display,
The vertical size 9 is initially 640 and 480 dots, respectively. The mouse cursor 12 is controlled by the mouse of the first PC 2. For example, when the window position of the display screen 7 is changed by the mouse cursor 12, the vertical coordinate 8 and the horizontal coordinate 10 at the upper left corner of the window display are changed, and the position of the second PC display screen 7 is changed. When the window size is changed, the size 9 in the vertical direction and the size 11 in the horizontal direction are changed, and the second PC display screen 7 is displayed in accordance therewith. When a file or the like is moved or copied, the file is moved on the screen by the mouse cursor 12, so that the first PC 2 is moved to the second PC 3 or the second PC 3 is moved.
Is transferred to the first PC 2.

FIG. 3 shows a block diagram of a monitor device according to the embodiment of the present invention.

In FIG. 3, the first PC connector 13 is
The first display data 14 is a display data transferred from the first PC, and the first communication data 15 is transmitted and received between the first PC and the monitor device. Communication data. The second PC connector 16 is a connector for connecting a monitor in the second PC, the second display data 17 is display data transferred from the second PC, and the second communication data 18 is a second PC.
And communication data transmitted and received between the device and the monitor device. First
The monitor connector 19 is a connector for connecting a monitor included in the monitor device 1, and the second monitor connector 20 has an interface similar to that of the first monitor connector 19. The first PC 2 and the second PC 3 include a first PC connector 13 and a second PC connector 16 for monitor connection, which are similar interfaces. The first PC connector 13 and the first monitor connector 19 are interfaces for transmitting and receiving the first display data 14 and the first communication data 15. The second PC connector 16 and the second monitor connector 20 are interfaces for transmitting and receiving the second display data 17 and the second communication data 18. The first display data 14 and the second display data 17 are display data for color display, and here, are 8-bit color data transmitted by a low voltage differential signal (LVDS) method. Further, the first communication data 15 and the second communication data 18 are control data for exchanging control information from each PC and instruction information of input means such as a keyboard and a mouse, and here, a USB (Universal).
Serial communication is called serial bus.

Next, the internal configuration of the monitor device 1 will be described. FIG. 4 shows an embodiment of the internal configuration of the monitor device 1.

In FIG. 4, the communication control unit 21
The communication data between C2 and the second PC 3 is controlled. The second resolution signal 22 indicates the resolution of the window screen for the second PC 3. The display position designation signal 23 is the second PC3
The position on the display screen 6 is shown for the window screen of FIG.
The display control unit 24 controls display screens of the first PC 2 and the second PC 3. The liquid crystal display data 25 is data to be displayed on the liquid crystal display 26. The communication control unit 21 exchanges files between the first PC 2 and the second PC 3 via the first communication data 15 and the second communication data 18. Further, the communication control unit 21 is configured to superimpose the display screens of the first PC 2 and the second PC 3 on the display screen.
Window position information is received via the first communication data 15, and a second resolution signal 22 indicating a size (resolution) at which the display of the second PC 3 is superimposed, and a display position signal 23 indicating the superimposed position. Output to the display control unit 24. The position information and resolution information of the window sent from the first PC 2 are represented by the coordinate information of the upper left point of the window, the number of lines in the vertical direction, and the number of dots in the horizontal direction, and each is transferred as serial data. The display position signal 23 output by the communication control unit 21 indicates a 1-bit signal that is “0” when displaying the screen of the first PC 2 and “1” when displaying the screen of the second PC 3. The resolution signal 22 is a signal representing the number of horizontal dots by 10 bits and the number of vertical dots by 10 bits.

Further, in the present embodiment, in order to make the instruction received by the mouse connected to the first PC 2 effective also on the display screen of the second PC 3 displayed in a superimposed manner, the monitor device 1 Received through the first communication data 15 and transmitted through the second communication data 18 to the second PC 3
Output to The display control unit 24 performs processing to superimpose the display data 17 of the second PC 3 on the display data 14 of the first PC 2 in accordance with the display position signal 23,
Output as liquid crystal display data 25. When the size of the superimposed display window is changed via the first communication data 15 by the instruction received with the mouse, the communication control unit 21 extracts the second resolution signal from the first communication data 15. , Resolution information is sent via the second resolution signal 22, and the display control unit 24 performs resolution conversion. The liquid crystal display 26 performs display according to the liquid crystal display data 25.
The resolution of the liquid crystal display 26 is 1024 here.
× 768 dots, and the interface is an LVDS signal similarly to the first PC2 and the second PC3.

FIG. 5 is a block diagram showing the internal configuration of the display control unit 24.

In FIG. 5, the display control unit 24 converts the first display data 14 into first parallel data 29.
A data conversion unit 27, a second data conversion unit 28 that converts the second display data 17 into second parallel data 31,
A resolution / frequency converter 32 that converts the resolution and frequency from the synchronization signal 30, the second parallel data 31, and the second resolution signal 22 and outputs window display parallel data 33, A data switching unit 34 for switching the display data between the first and second display data and outputting the superimposed display data 35; and a liquid crystal data conversion unit 36 for converting the data into liquid crystal data.

The first data converter 27 converts the first display data 14, which is an LVDS signal, into R (red), G (green), and B (blue) signals.
Is converted into parallel data of display data, a vertical synchronization signal, a horizontal synchronization signal, a display valid period signal, and a dot clock, and is output as first parallel data 29. The vertical synchronization signal, the horizontal synchronization signal, and the dot clock It is also output as a synchronization signal 30 to the resolution / frequency converter 32. The second data conversion unit 28 includes the first data conversion unit 27
Similarly, the second display data 17 which is an LVDS signal is
The data is converted into parallel data and output as second parallel data 31. The resolution / frequency conversion unit 32 converts the resolution of the second parallel data 31 in accordance with the resolution signal 22 and performs frequency conversion in accordance with the first synchronization signal 30 so as to be the same as the frequency of the first parallel data 30. Output as data 33. Here, the first parallel data 29 and the second parallel data 31 are 8-bit data for each color of RGB (display of 16.7 million colors).

The data switching section 34 outputs the first parallel data 29 so that the second parallel data 31 is output at the position of the superimposed display in accordance with the display position signal 23.
And the second parallel data 31 and output as the superimposed display data 35. Here, when the display position signal 23 is “0”, the first parallel data 29 is changed to “1”.
At this time, the second parallel data 31 is output. The liquid crystal data conversion unit 36 converts the superimposed display data 35, which is 8-bit parallel data for each color of RGB, into liquid crystal display 2 data.
6 and output as liquid crystal display data 25.

FIG. 6 is a block diagram showing the internal configuration of the resolution / frequency converter 32 shown in FIG.

In FIG. 6, the resolution / frequency conversion unit 32
Converts a resolution from the second resolution signal 22 and the second parallel data 31, and outputs a resolution-converted synchronization signal 38 and resolution-converted display data 39.
And a write control unit 4 that outputs a write control signal 41
0, a read control unit 42 that outputs a read control signal 43 according to the first synchronization signal 30, and a window screen storage unit 44 of a memory that stores display data of the window screen.

The resolution converter 37 converts the resolution of the second parallel data 31 in accordance with the resolution indicated by the resolution signal 22, and outputs the converted signal as the resolution converted synchronizing signal 38 and the resolution converted display data 39. The writing control unit 40
From the vertical synchronization signal after the resolution conversion, the horizontal synchronization signal, and the resolution conversion synchronization signal 38 which is the dot clock, the window signal storage unit 44 stores the synchronization signal resolution conversion data 3
A write control signal 41 which is a timing signal for writing 9 is generated. The read control unit 42 includes a second PC
In order to display the data of the display screen of No. 3 in a window on the screen of the first PC 2, the first synchronizing signal 30 which is a synchronizing signal of the first parallel data 29 and the display position signal 23 are adjusted to the window display position. , A read control signal 43 for reading data from the window screen storage unit 44 is generated. The window screen storage unit 44 stores the resolution-converted display data 39 for one screen in accordance with the write control signal 41, reads out the display data 39 in accordance with the read control signal 43, and outputs it as the window display parallel data 33.

Next, the configuration of the communication control unit 21 will be described.
FIG. 7 is a block diagram showing the internal configuration of the communication control unit 21 shown in FIG.

In FIG. 7, the communication control section 21 converts the first communication data 15 or the second communication data 17 into window display information 45, file movement instruction information 46, first file data 47, first keyboard information 48, A communication data identification unit 52 for identifying each of the 1 mouse information 49, the second resolution information 50, and the second file data 51, and a window information generation unit 53 for generating window information are provided. The window display information 45, the file movement instruction information 46, the first file data 47, the first keyboard information 48, the first mouse information 49, the second resolution information 50, and the second file data 51 are the first PC communication data 1
5 and the type of data included in the second PC communication data 17, not a signal line. These types are the first communication data 15 or the second communication data 17
Are distinguished by adding an identifier thereto, and are identified by the communication data identification unit 52. Window display information 45
Indicates information indicating the size and display position of the window display of the second PC 3 displayed on the first PC 2. The file transfer instruction information 46 indicates write / read instructions to each PC and file name information when moving or copying a file. The first file data 47 is the first P
This shows data when a file is copied or moved from C2 to the second PC3. The first keyboard information 48 indicates information on a keyboard operation connected to the first PC 2, and the first mouse information 49 indicates information on a mouse operation connected to the first PC 2. The second resolution information 50 is information indicating the display resolution of the second PC 3 and includes second file data 51.
Indicates data when a file is copied or moved from the second PC 3 to the first PC 2. The communication data identification unit 52 determines the information transmission destination from the identifier of the first communication data 15 or the second communication data 17, and transmits the information to this transmission destination. For example, the window display information 45 is transmitted to the window information generation unit 53, and the file movement instruction information 46, the first file data 47, the first keyboard information 48, and the first mouse information 49 are transmitted to the second PC 3 as the second communication data 17. Transmitted and the second resolution information 50
The second file data 51 is transmitted to the first PC 2 as the first communication data 15. Window information generation unit 5
3 is the second resolution signal 2 based on the window display information 45.
2 and a display position signal 23 are generated.

Next, the internal configuration of the information processing apparatus will be described. FIG. 8 shows a block diagram of the internal configuration of the first PC 2.

In FIG. 8, a first PC 2 is a first CPU
54, a first storage unit 55, and a first PC communication control unit 65
And a first bus 63 for connecting them. 56 is window display information bus data, 57
Is the first bus data of the file movement instruction information, 58 is the first bus data of the second resolution information, 59 is the first bus data of the first file, 60 is the first bus data of the second file, 61 is the first bus of the first keyboard information. Data, 62 is first mouse information first bus data, and 64 is first bus data, each indicating the type of data. First CPU 54 and first CPU
A bus interface is provided between the storage unit 55 and the first bus 63, and includes window display information bus data 56, file movement instruction information first bus data 57, second resolution information first bus data 58, and first keyboard information first bus data 58. 1 bus data 6
The first and first mouse information first bus data 62 are transmitted. Similarly, the first file first bus data 59 and the second file first bus data 60 are stored in the first storage 55 and the first file.
It is transmitted to and from the bus 63. The first bus 63 and the first PC communication control unit 65 are also connected by a bus interface.

The first CPU 54 outputs window display information bus data 56 which is information indicating the size and display position when displaying the display of the second PC 3 in a window. The initial value of the resolution may be set arbitrarily,
It is also possible for the user to set from the keyboard 4.
Whenever the size or display position of the window is changed, the changed information is displayed in the window display information bus data 5 each time.
Output as 6. Also, the file on the first PC 2 is
If you want to copy or move to PC3, use keyboard 4
Alternatively, according to the user's instruction from the mouse 5, the first C
The PU 54 transmits information such as a file read instruction to the first storage unit 55, a file write instruction to the second PC 3, and a file name as file transfer instruction information first bus data 57 as the first storage unit 55 and the first PC communication control unit 65. The first storage unit 55 outputs the data of the file in accordance therewith as the first file first bus data 59.
Conversely, when the user wants to copy or move the file of the second PC 3 to the first PC 2, in accordance with a user's instruction from the keyboard 4 and the mouse 5, an instruction to write a file to the first storage unit 55, an instruction to read a file to the second PC 3, The first storage unit 55 and the first PC communication control unit 6 use information such as names as file transfer instruction information first bus data 57.
Output to 5 The first storage unit 55 receives the second file first bus data 60 that is the file data from the second PC 3. The instruction information from the keyboard 4 or the mouse 5 includes the keyboard information first bus data 61 and the mouse information first data.
The data is sent to the first CPU 54 via the bus data 62. Copying, moving, and the like of the file are also instructed from the keyboard 4 or the mouse 5.

The first PC communication control section 63 is a window display information bus data 56 which is data input from the first bus data 64, a file transfer instruction information first bus data 57, a first file first bus data 59, a keyboard. The information first bus data 61 or the mouse information first bus data 62 are converted into window display information 45, file movement instruction information 46,
The data is converted into file data 47, first keyboard information 48 or first mouse information 49, and is output as first communication data 15. Further, the first PC communication control unit 63 determines whether the second resolution information 50 or the second file data 51, which is data input from the first communication data 15, is the resolution information of the second PC 3 or the file data based on each identifier. The first bus data 58 is converted into the second resolution information first bus data 58 or the second file first bus data 60.
4. Output to the first CPU 54 and the first storage unit 55 via the first bus 63, respectively.

Next, the configuration of the second PC 3 will be described. FIG. 9 shows a block diagram of the internal configuration of the second PC 3.

In FIG. 9, the second PC 3 is a second CPU
66, a second storage unit 67, a second PC communication control unit 77
And a second bus 75 for connecting them. Further, 68 is second resolution information second bus data, 69
Is the second bus data of the second file movement instruction information, 70 is the second bus data of the file movement instruction information, 71 is the second bus data of the first keyboard information, 72 is the second bus data of the first mouse information, and 73 is the second file of the second file. The second bus data, 74 is the first file second bus data, 75 is the second bus, and 76 is the second bus data, each indicating the type of data. Second CPU 66, second storage unit 67, and second bus 7
5 is a bus interface, like the first PC 2, the second resolution information second bus data 68, the second file transfer instruction information second bus data 69, the file transfer instruction information second bus data 70, the second One keyboard information second bus data 71 and second mouse information second bus data 72
Is transmitted. Similarly, the second file transfer instruction information second bus data 69, the second file second bus data 73, and the first file second bus data 74 are also transmitted between the second storage unit 67 and the second bus 75. . Also, the second bus 75
Similarly, the second PC communication control unit 77 is also connected by a bus interface.

The second CPU 66 outputs second resolution second bus data 68 which is information indicating the display resolution of the second PC 3. When the user wants to copy or move the file of the second PC 3 to the first PC 2, the second CPU 66 sends the file to the second PC sent from the first PC according to a user's instruction from the keyboard 4 or the mouse 5 connected to the first PC 2. A second file transfer instruction information second bus data 69 for receiving a file read instruction and file move instruction information second bus data 70 indicating information such as a file name, and instructing to read a file from the second storage unit is stored in the second bus data 70. The data is output to the second storage unit 67 via the bus 75. The second storage unit 67 outputs the file data according to the data as the second file data / second bus data 73. vice versa,
When the user wants to copy or move the file of the first PC 2 to the second PC 3, the first PC 2 is operated in accordance with a user's instruction from the keyboard 4 or the mouse 5 connected to the first PC 2.
The second file instructs to write the file to the second storage unit 67 by receiving the file transfer instruction information second bus data 70 indicating information such as the file write instruction to the second PC and the file name sent from the second PC. The movement instruction information second bus data 69 is output to the second storage section 67 via the second bus 75. Accordingly, the second storage unit 67 stores
The first file / second bus data 74 sent from the first PC 2 is written.

[0036] The second PC communication control unit 77 receives the second resolution information second data, which is data input from the second bus data 76.
Bus data 68 or second file second bus data 73
Is converted into second resolution information 50 or second file data 51 which are serial data each having an identifier, and output as the second communication data 17. The second PC communication control unit 77 also stores the file movement instruction information 46, the first file data 47, the first keyboard information 48, or the first mouse information 49, which are the data input from the second communication data 17, as the respective identifiers. , The file movement instruction information, the second bus data 70, the first file second bus data 74, the first keyboard information second bus data 71 or First mouse information second bus data 72
And outputs the data to the second CPU 66 and the second storage unit 67 via the second bus data 76 and the first bus 75, respectively.

Next, an outline of connection and display of two PCs according to the present embodiment will be described with reference to FIGS.

In FIG. 1, the monitor device 1 has two monitor connectors. One of the monitor connectors is used by being connected to a commonly used desktop type first PC 2. In the present embodiment, a connector for connecting the second PC 3 is provided on the front side, and a document or the like created and edited in another place using a movable PC such as a notebook PC can be provided as in the monitor device 1. Easy to use when you want to continue editing on a large screen. At this time, the monitor device 1 controls to display the screen of the second PC 3 on the screen of the first PC 2 as a window. Furthermore, since the monitor connector of the monitor device 1 has a communication means with the PC at the interface, the screen of the second PC 3 displayed on the window can be controlled by designating with the keyboard 4 or the mouse 5 connected to the first PC 2. Becomes possible.

FIG. 2 shows that the second PC display screen 7 is displayed as a window on the first PC display screen 6. The display position is determined by a vertical coordinate 8 and a horizontal coordinate 10 at the upper left corner of the second PC display screen, and the size is determined by a vertical size 9 and a horizontal size 11 of the second PC display screen. Both are controlled by the first PC 2. The mouse cursor 12 is located on the first PC 2
Is a cursor of the mouse 5 connected to the first PC display screen 6, as well as window operations such as movement and size change of the second PC display screen 7,
The user can also operate the icons on the C display screen 7 and move the file on the first PC screen 6 onto the second PC screen 7 in the window while clicking the file icon with the mouse cursor 12 or on the second PC screen 7 By moving the file on the first PC screen 6 outside the window,
File exchange between the first PC 2 and the second PC 3 becomes possible.

Next, referring to FIGS. 3 to 9, two PCs
The details of the screen display operation according to the above will be described.

In FIG. 3, the first PC 2 is 1024 ×
The display data of 768 dots is defined as the first display data 14,
Further, information on the position and size of the window for superimposed display is output as first communication data 15 from the first PC connector 13 to the monitor device 1 via the first monitor connector 19. The second PC 3 uses the display data of 640 × 480 dots as the second display data 17, and the resolution information indicating that the resolution is 640 × 480 dots as the second communication data 18, from the second PC connector 16 to the second monitor connector 20. Is output to the monitor device 1 via the.
The resolution information of the second PC 3 is transmitted to the first PC 3 via the monitor 1.
The first communication data 15 is output to the PC 2. First
The PC 2 determines the initial value of the window size according to the resolution information sent from the second PC 3 via the monitor device 1. Therefore, in the present embodiment, the initial value of the window display size is 640 × 480. Thereafter, when the size of the window is changed by the mouse 5 or the like, the information is transferred to the monitor device 1 as the first communication data 15. The monitor device 1 displays the first display data 14
At the same time as the display of 1024 × 768 dots according to the above, the information on the position and size of the window transmitted via the first communication data 15 and the resolution information transmitted via the second communication data 18 According to the second of the second PC3
The display data 17 is displayed in a window on the display screen of the first PC 2. In the present embodiment, the first communication data 15 and the second communication data 18 are serial communication.
Currently standardized USB and even faster IEEE
Serial communication of the 1394 standard or serial communication of a normal keyboard, mouse, or the like may be used. If the interface signal lines have room, communication may be performed in parallel.

Next, referring to FIG. 7, FIG. 8 and FIG.
The first communication data 1 when the screens of the two PCs of the first PC 2 and the second PC 3 are displayed on the monitor device 1 as windows.
5 and the control of the second communication data 17 will be further described. Note that the first display data 1
4 and the control of the second display data 17 are omitted.

Referring to FIG. 9, the second CPU 66
The second resolution information second bus data 68 which is the resolution information of C3 is output. The second PC communication control unit 77 receives the second PC input via the second bus 75 and the second bus data 76.
The second resolution bus data 68 is converted into second resolution information 50 to which an identifier indicating resolution information is added, and is output as second communication data 17.

On the other hand, the communication data identification section 52 inside the communication control section 21 of the monitor device 1 shown in FIG.
It recognizes the resolution information to be sent to the first PC 2 and outputs it as the first communication data 15 with the destination being the first PC 2.

The first communication data 15 is received by the first PC communication control unit 65 of the first PC 2 shown in FIG.
The PC communication control unit 65 recognizes that the information is resolution information from the identifier, converts the information into second resolution information first bus data 58, and outputs it to the first CPU 54 via the first bus data 64 and the first bus 63. .

The first CPU 54 sets the resolution indicated by the second resolution information first bus data 58 as an initial value,
Is determined, the window display information bus data 56 is output together with the window position information, and the information is sent to the first PC communication control unit 65 via the first bus 63 and the first bus data 64. hand over. The first PC communication control unit 65 converts the window display information bus data 56 into
It is converted into window display information 45 which is serial data to which an identifier indicating window information is added, and is output as first communication data 15.

When the position or size of the window display is changed, a change instruction is received by the keyboard 4 or the mouse 5 and the first keyboard information first bus data 6
1. The first mouse information is transmitted to the first CPU 54 via the first bus data 62 and the first bus 63.
The first CPU 54 outputs window display information bus data 56 according to the instruction. Similarly, the first PC communication control unit 65 converts the window display information bus data 56 into
It is converted into window display information 45 which is serial data to which an identifier indicating window information is added, and is output as first communication data 15.

On the other hand, the communication data identification section 52 shown in FIG.
Recognizes that the window display information 45 sent as the first communication data 15 is the window information from the identifier, and outputs the destination as the window information generation unit 53.

The window information generator 53 generates a resolution signal 22 indicating the size of the window display and a display position signal 23 indicating the position from the window display information 45.
Output.

Also, the first keyboard information first bus data 61 or the first mouse information first bus data 62 shown in FIG. 8 is transmitted to the first PC communication controller 65 via the first bus 63 and the first bus data 64. Is input to The first PC communication control unit 65 converts the serial information into first keyboard information 47 or first mouse information 48 which is serial data to which identifiers indicating keyboard information and mouse information are added, respectively. Output. These pieces of information are for validating the instruction received by the keyboard 4 or the mouse 5 also on the display screen of the second PC 3 which is displayed as a window on the display screen of the first PC 2.

Next, referring to FIGS. 4 to 6, the first PC
The operation of the monitor device 1 when the second PC 3 is window-displayed on the display screen 2 will be described.

In FIG. 4, the display data of the first PC 2 is input as the first display data 14 to the display control unit 24 via the first monitor connector 19, and the display data is superimposed on the display of the first PC 2. Information on the position and size is input to the communication control unit 21 via the first monitor connector 19 as first communication data 15. 2nd P
The display data of C3 is input to the display control unit 24 via the second monitor connector 20 as the second display data 17, and the resolution information of the second PC 3 is input as the second communication data 18 via the second monitor connector 20. , Communication control unit 21
Is input to

The communication control section 21 sends the display position signal 23 via the second communication data 18 in accordance with the position and size information of the superimposition window sent via the first communication data 14. A second resolution signal 22 is generated in accordance with the resolution information of the second PC 3, and a display control unit 24.
Output to For example, the coordinates in the upper left of the superimposition window are in the horizontal direction 10 in the resolution of 1024 × 768 dots.
Dot size, vertical 10th line, size 640 ×
If it is 480 dots, the display position signal 23 becomes “1” from the 10th dot to the 649th dot in the horizontal direction from the 10th line to the 489th line in the vertical direction,
The resolution signal 22 is a signal indicating 640 dots in the horizontal direction and 480 dots in the vertical direction.

The display control unit 24 controls the first display data 14
Then, control is performed to display a window at a position in accordance with the display position signal 23 with a size obtained by resolution-converting the second display data 17 in accordance with the resolution signal 22, and the liquid crystal display data 25 is output. The liquid crystal display 26 performs display according to the liquid crystal display data 25.

Referring to FIG. 5, the operation of display control unit 24 when generating liquid crystal display data 25 will be described in detail.

In FIG. 5, the first data conversion unit 27
The first display data 14 is converted into first parallel data 29 composed of 8-bit parallel data of each color of RGB, a vertical synchronization signal, a horizontal synchronization signal, and a dot clock. In the present embodiment, since the first display data 14 is an LVDS signal, the first data converter 27 performs serial / parallel conversion. Therefore, when the first display data 14 is composed of 8-bit parallel data of each color of RGB, a vertical synchronization signal, a horizontal synchronization signal, and a dot clock, a configuration without the first data conversion unit 27 is also possible. When the first display data is analog data, the first data converter 27 may be configured to include analog / digital conversion. The second data conversion unit 28 has the same configuration as the first data conversion unit 27. The resolution / frequency converter 32 converts the second parallel data 31 into data having a resolution according to the resolution information 22, and performs frequency conversion at a timing according to the first synchronization signal 30 and the display position signal 23.
Output as window display parallel data 33. The data switching unit 34 outputs the first parallel data 29 when the display position signal 23 is “0”, and outputs the window display parallel data 33 as the superimposed display data 35 when the display position signal 23 is “1”. The liquid crystal data conversion unit 36
The superimposed display data 35 composed of 8-bit parallel data of each B color, a vertical synchronizing signal, a horizontal synchronizing signal, and a dot clock is converted according to the input signal specification of the liquid crystal display 26. In the present embodiment, since the input signal of the liquid crystal display 26 is an LVDS signal, the liquid crystal data converter 36 includes a parallel / serial converter. Also, the input signal of the liquid crystal display 26 is
If it is composed of RGB 8-bit parallel data, a vertical synchronization signal, a horizontal synchronization signal, and a dot clock,
A configuration without the liquid crystal data conversion unit 36 is also possible. When the number of bits of the RGB data of the input signal of the liquid crystal display 26 is smaller than 8 bits (for example, 6 bits),
The FRC (Frame Rate) is sent to the liquid crystal data conversion unit 36.
Control or the like may be used to include means for converting 8-bit data into 6-bit data.

Referring to FIG. 6, resolution / frequency converter 3
Operation 2 will be described.

In FIG. 6, the second parallel data 31, which is the display data of the second PC 3, is such that the first PC 2
In accordance with the resolution signal 22 indicating the size at which the screen of No. 3 is displayed on the window, the resolution conversion unit 37 converts the screen into a post-resolution conversion synchronization signal 38 and post-resolution conversion display data 39. The display data 39 after the resolution conversion needs to be adjusted to the timing of the display data of the first PC 2 in order to overlap the display data of the second PC 3 with the display data of the first PC 2. Therefore, the display data 39 after resolution conversion is temporarily stored in the window screen storage unit 44 for one screen, and the first P
Reading is performed in accordance with the display timing of C2. for that reason,
The writing control unit 40 generates a writing control signal 41 from the post-resolution conversion synchronization signal 38 which is the display timing of the second PC 3. In addition, the read control unit 42
A read control signal 43 is generated from the first synchronization signal 30 at the timing of C2 and the display position signal 23 indicating the position of the window display. Therefore, in the present embodiment, the window screen storage unit 44 only needs to have a capacity of a maximum of 1024 dots × 768 dots × 8 bits × 3 (RGB) bits. In this way, the window display parallel data 33 which is the resolution converted and frequency converted display data of the second PC 3 is generated.

Next, referring to FIG. 2, FIG. 7 to FIG.
The first communication data 15 and the second communication data 1 when a file is exchanged between C2 and the second PC 3
7 will be described. Note that the first display data 14 and the second display data 17 are omitted for the description of the communication data.

First, a case where a file is moved from the first PC 2 to the second PC 3 will be described.

In FIG. 2, the icon of the file to be moved in the first display screen 6 is moved into the second display screen 7 while clicking with the mouse cursor 12.

The movement of the mouse 5 shown in FIG. 8 is transmitted to the first CPU 54 via the first mouse information first bus data 62 and the first bus 63. The first CPU 54, which has recognized the movement of the file, reads out the first storage unit 67 of the file, writes the second PC 3, and as the file movement instruction information first bus data 57 indicating the file name via the first bus 63. 1 to the storage unit 55. The first storage unit 55 reads file data according to the file name instructed to be read from the file movement instruction information first bus data 57 and outputs the file data as first file data first bus data 59. The file transfer instruction information first bus data 57 and the first file first bus data 59 are transmitted via the first bus 63 and the first bus data 64 to the first P bus.
C communication control unit 65, the first PC communication control unit 65
Converts the file transfer instruction information 46 and the first file data 47, which are parallel data to which file transfer information and an identifier indicating file data are added, respectively, and outputs the first communication data 15.

The communication data identification section 52 of the monitor shown in FIG. 7 converts the file movement instruction information 46 and the first file data 47 transmitted as the first communication data 15 into
It recognizes the file movement information and the file data from the identifier, and outputs it as the second communication data 17 having the destination as the second PC 3.

In the second PC communication control unit 77 shown in FIG.
A file move instruction for recognizing the file move instruction information 46 sent as the second communication data 17 as the file move information from the identifier and notifying the second CPU 66 that the file data is sent from the first PC 2. The information is converted to second bus data 70 and output to the second CPU 66 via the second bus data 76 and the second bus 75. Further, the second PC communication control unit 77 transmits the first file data 47 transmitted as the second communication data 17.
Is recognized as file data from the identifier, is converted into first file second bus data 74, and is output to the second storage section 67 via the second bus data 76 and the second bus 75.

The second CPU 66 transfers the second file movement instruction information second bus data 69 for writing the first file second bus data 74 to the second storage 67 from the file movement instruction information second bus data 70. The data is output to the second storage section 67 via the second bus 75. The second storage unit 67
The first file second bus data 74 is written according to the second file movement instruction information second bus data 69. By such processing, the file transfer from the first PC 2 to the second PC 3 is completed.

Next, a case where a file is moved from the second PC 3 to the first PC 2 will be described.

In FIG. 2, the icon of the file to be moved in the second display screen 7 is moved into the first display screen 6 while clicking with the mouse cursor 12.

The movement of the mouse 5 shown in FIG. 8 is transmitted to the first CPU 54 via the first mouse information first bus data 62 and the first bus 63. The first CPU 54, which has recognized the movement of the file, writes the first file in the first storage unit 67, reads the second PC 3, and outputs the first bus data 57 via the first bus 63 as file movement instruction information first bus data 57 indicating a file name. Output to the storage unit 55. At the same time, the file transfer instruction information first bus data 57 is output to the first PC communication control unit 65 via the first bus 63 and the first bus data 64. The first storage unit 55 receives the write instruction and waits for the second file first bus data 60. The first PC communication control unit 65 converts the file transfer instruction information first bus data 57 into file transfer instruction information 46 which is parallel data to which an identifier indicating the file transfer information is added. Output.

The communication data identification section 52 of the monitor shown in FIG. 7 recognizes the file transfer instruction information 46 sent as the first communication data 15 as file transfer information from the identifier, and sets the destination as the second PC 3. Is output as second communication data 17.

In the second PC communication control unit 77 shown in FIG.
The file movement instruction information 46 transmitted as the second communication data 17 is recognized as the file movement information from the identifier, and the second file movement instruction information for notifying the second CPU 66 that the file data is to be transmitted to the first PC 2. The data is converted to bus data 70 and output to the second CPU 66 via the second bus data 76 and the second bus 75.

The second CPU 66 reads, from the file transfer instruction information second bus data 70, the second file transfer instruction information second bus for reading the file specified from the second storage unit 67 as the second file second bus data 73. The data 69 is output to the second storage section 67 via the second bus 75.

The second storage section 67 reads the specified file in accordance with the second file transfer instruction information second bus data 69 and stores the read file as the second file second bus data 73.
The second bus 75 and the second bus data 76
Output to PC communication control unit 77.

The second PC communication control unit 77 converts the second file second bus data 73 into the second file data 51 which is parallel data to which an identifier indicating the file data is added. Output as

The communication data identification section 52 of the monitor shown in FIG. 7 recognizes the second file data 51 sent as the second communication data 17 as file data from the identifier, and sets the destination as the first PC 2. Is output as the first communication data 15 to be transmitted.

The first PC communication control unit 65 shown in FIG. 8 recognizes that the second file data 51 sent as the first communication data 15 is file data from the identifier, and transmits the second file first bus data. 60 and output to the first storage unit 55 via the first bus data 64 and the first bus 63.

The first storage unit 55 writes the second file first bus data 60 in accordance with the file movement instruction information first bus data 57 described above. By such processing, the file transfer from the second PC 3 to the first PC 2 is completed.

The effects obtained by the present embodiment will be briefly described as follows.

The control unit for displaying the display screen of the second PC on the display screen of the first PC as a window is provided in the monitor device, so that the portability is excellent but the display screen is small like a notebook PC. Devices can be easily connected to a large-screen monitor device, and its display can be performed. Further, by providing a control unit for controlling communication data of input means such as a keyboard and a mouse connected to the first PC, and communication data such as exchange of files between PCs, a keyboard and a mouse of the first PC are provided. The communication data of the input means is also valid on the second PC, and on the screen displayed on the window, the first data is input using the keyboard, mouse, or the like.
File transfer between the PC and the second PC can be easily performed.

When the third information processing device is connected to the monitor device, a third monitor connector is provided in the monitor device so that communication data can be transmitted and received between the information processing devices, similarly to the above-described configuration. In addition, by controlling the communication control unit, the display screen of the third information processing device can be displayed on the monitor device as a window. In this case, the first PC can control the window display on the second and third PCs. According to the present embodiment, by providing one master information processing device, it is possible to control the display screen of another information processing device.

In the first and second information processing devices described above, the functions of the communication control unit described above may be realized by application software.

[0081]

According to the present invention, a multi-input monitor device to which a plurality of information processing devices can be connected can be realized. In the monitor device, data transfer between a plurality of information processing devices can be controlled.

[Brief description of the drawings]

FIG. 1 is an external view showing a use form of a multi-input monitor device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a display example of a screen of a monitor device according to an embodiment.

FIG. 3 is a block diagram showing a use form of the multi-input monitor device according to the embodiment.

FIG. 4 is a block diagram of an internal configuration of the monitor device according to the embodiment.

FIG. 5 is a block diagram of an internal configuration of a display control unit according to the embodiment.

FIG. 6 is a block diagram of an internal configuration of a resolution / frequency conversion unit according to the embodiment.

FIG. 7 is a block diagram of an internal configuration of a communication control unit according to the embodiment.

FIG. 8 is a block diagram of an internal configuration of a first PC according to the embodiment.

FIG. 9 is a block diagram of an internal configuration of a second PC according to the embodiment.

[Description of Signs] 1 ... monitor device, 2 ... first PC, 3 ... second PC, 4 ... keyboard, 5 ... mouse, 6 ... first PC display screen, 7 ... second PC display screen, 8 ... window display Coordinates, 9: vertical size of window display, 10: horizontal coordinates of upper left corner of window display, 11: horizontal size of window display, 12: mouse cursor, 13: first PC
Connector, 14: first display data, 15: first communication data, 16: second PC connector, 17: second display data,
18: second communication data, 19: first monitor connector, 2
0: second monitor connector, 21: communication controller, 22: resolution signal, 23: display position signal, 24: display controller, 2
5 ... Liquid crystal display data, 26 ... Liquid crystal display, 27 ...
First data converter, 28... Second data converter, 29.
First parallel data, 30... First synchronization signal, 31... Second parallel data, 32.
Reference numeral 3: Window display parallel data, 34: Data switching unit, 35: Overlay display data, 36: Liquid crystal data conversion unit, 37: Resolution conversion unit, 38: Synchronization signal after resolution conversion, 39: Display data after resolution conversion, 40 ... write control unit, 41 ... write control signal, 42 ... read control unit, 43 ... read control signal, 44 ... window screen storage unit, 45 ... window display information, 46 ... file movement instruction information, 47 ... first file data, 48: first keyboard information, 49: first mouse information, 50: second
Resolution information, 51: second file data, 52: communication data identification unit, 53: window information generation unit, 54: first
CPU, 55: first storage unit, 56: window display information bus data, 57: file movement instruction information first bus data, 58: second resolution information first bus data, 59: first
File first bus data, 60 ... second file first bus data, 61 ... first keyboard information first bus data, 6
2: first mouse first bus data, 63: first bus, 64
... first bus data, 65 ... first PC communication control unit, 66 ...
First CPU, 67: second storage unit, 68: second resolution information, second bus data, 69: second file movement instruction information, second
Bus data, 70... File movement instruction information second bus data, 71... First keyboard information second bus data, 72.
First mouse information second bus data, 73... Second file second bus data, 74... First file second bus data, 7
5: second bus, 76: second bus data, 77: second PC
Communication control unit.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroshi Kurihara 3300 Hayano Mobara-shi, Chiba Electronic Device Division, Hitachi, Ltd. (72) Tatsumi Mori 810 Shimoimaizumi, Ebina-shi, Kanagawa Hitachi, Ltd. System Division

Claims (8)

[Claims] 1. A monitor device for receiving display data and displaying according to the display data, wherein the first and second interface units receive display data and communication data from first and second information processing devices. A display unit that displays a display screen; and a communication unit that identifies, from communication data received by the first interface unit, display data received by the second interface unit and control information about a display screen based on the communication data. Control means, a display screen based on display data and communication data received by the first interface unit, and a display screen based on display data and communication data received by the second interface unit, wherein the communication control means Display control means for controlling display according to the identified control information. Multi-input monitor apparatus according to symptoms. 2. The multi-input monitor device according to claim 1, wherein said communication control means transfers communication data received by said first interface unit to said second interface unit. Multi-input monitor device. 3. The multi-input monitor device according to claim 2, wherein said communication control means transfers communication data received by said second interface unit to said first interface unit. Multi-input monitor device. 4. The multi-input monitor device according to claim 1, wherein the communication control means includes a display data received by the second interface unit included in the communication data and a resolution of a display screen based on the communication data. A multi-input monitor device, wherein information and frequency information and display position information are identified as the control information. 5. The multi-input monitor device according to claim 4, wherein said display control means is based on display data and communication data received by said second interface unit, identified by said communication control means. A conversion unit for converting the resolution and frequency of the display data received by the second interface unit according to the resolution information and the frequency information of the second interface unit; and a conversion unit that is identified by the communication control unit and received by the second interface unit. A display position control means for controlling a display position according to a display position corresponding to display position information on a display screen based on the display data and the communication data. 6. An information processing apparatus connected to a monitor device having first and second interface units for receiving display data and communication data, wherein the control means generates the display data and the communication data; Communication control means for transferring display data and the communication data to the monitor device, wherein the control means generates control information about a display screen of another information processing device connected to the monitor device, An information processing apparatus, wherein the information is transferred by the communication control means. 7. The information processing apparatus according to claim 6, wherein:
The information processing apparatus, wherein the control unit generates, as the control information, resolution information and frequency information on a display screen of another information processing apparatus, and display position information. 8. The information processing apparatus according to claim 6, wherein:
The information processing device, wherein the communication control unit receives communication data from the other information processing device from the monitor device.