JP2000276116A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience by providing a means etc., for instructing the selection of a signal selecting means and a data selecting means for selecting a video signal and control data in a corresponding relation so as to control a peripheral device by means of a device for supplying the video signal. SOLUTION: A display device is provided with a USB hub 14 for distributing control data to peripheral devices, a switch instructing means 12 etc., for instructing the selection of a signal selecting means (SW1) 11 and a data selecting means (SW2) 13 for selecting a video signal and the control data in a corresponding relation. Then, at the time of selecting the first personal computer 6 by the means 12, a display panel 10 displays based on a video signal outputted from the personal computer 6, and each peripheral device and the first personal computer 6 are connected through a first serial input means 4, a second switch means 13, a USB hub 14 and a port 18. Thus, the peripheral devices can be controlled by the first personal computer 6 while watching the display of the panel 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device having a serial bus such as a USB (Universal Serial Bus).

[0002]

2. Description of the Related Art At present, in a display device having a display panel such as a liquid crystal panel, not only a display based on a digital / analog video signal output from a personal computer but also a printer, a keyboard, It is also used as a connection unit for peripheral devices such as a mouse (for example, Japanese Patent Application Laid-Open No. H10-154560 (H01)).
R25 / 00)).

[0003] In addition, some devices of this type are provided with a plurality of video input terminals and can switch display based on video signals output from a plurality of personal computers.

[0004]

However, a conventional peripheral device connected to this type of device only functions as a personal computer peripheral device connected to a specific one of a plurality of video input terminals. For this reason, there is a possibility that inconsistency may occur between the display content and the control of the peripheral device, and the usability is not always good.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has a feature that a plurality of video signal input terminals and a video signal input from one of the signal input terminals are selected. Means for generating display data based on the video signal selected by the signal selecting means; a plurality of control data input terminals; and means for selecting control data input from one of the data input terminals. And a port for connecting a peripheral device controlled based on the control data; and a means for distributing the control data selected by the data selection means to the peripheral device via the port. In order to select a signal and the control data, there is provided a means for instructing selection of the signal selecting means and the data selecting means.

[0006]

FIG. 1 is a block diagram showing one embodiment of a display device 1 to which the present invention is applied.

The display device 1 includes first and second video input terminals (RGB1, RGB2) 2 and 3, and first and second serial bus terminals (USB-U1, USB-U1, USB-U2) 4,5.
The first and second video input terminals 2 and 3 are connected to video output terminals of first and second personal computers (PC1 and PC2) 6 and 7, respectively, and output from the first and second personal computers 6 and 7. Is input. The first and second serial bus input terminals 4 and 5 are connected to terminals (not shown) of the first and second personal computers 6 and 7 which are referred to as downstream of the USB standard, respectively. , Two-way serial communication of data for controlling a printer, a keyboard, a mouse, etc., which will be described later, is enabled.

The first and second video input terminals 2 and 3 are first and second video data control units (VGA1 and VGA2), respectively.
8 and 9 are connected. Each of the control units 8 and 9 converts display data to be displayed on a display panel 10 composed of, for example, a liquid crystal display, based on the video signals received via the first and second video input terminals 2 and 3. Convert and output.

The outputs of the control units 8 and 9 are not directly output to the display panel 10 but are supplied via first switch means (SW1) 11. The first switch means 11 selects the supply of the display data to the display panel 10 based on the instruction of the switch instruction means 12 for switching and selecting one of the first and second personal computers 6 and 7. Specifically, when the first personal computer 6 is selected by the switching instruction means 12, the first switching means 11 supplies display data output from the first video data control unit 8 to the display panel 10. The display corresponding to the video signal output from the first personal computer 6 is displayed on the display panel 10 while the switching instruction means 12 is used to display the second personal computer 7.
Is selected, the first switch means 11 supplies the display data output from the second video data control section 9 to the display panel 10 and displays the display data corresponding to the video signal output from the second personal computer 7. Is displayed on the display panel 10.

The first and second serial bus input terminals 4,
5 is connected to the USB hub 14 via the second switch means 13. The second switch means 13 includes:
Based on an instruction from the switching instruction means 12 for switching and selecting one of the second personal computers 6, 7, supply of control data to the hub 14 is selected. Specifically, when the first personal computer 6 is selected by the switching instruction means 12, the second switching means 13 sends control data supplied via the first serial bus input terminal 4 to the USB hub 14. Alternatively, when the second personal computer 7 is selected by the switching instruction means 12, the second switch means 13 transmits the control data supplied through the second serial bus input terminal 5. Alternatively, it is supplied to the USB hub 14.

The USB hub 14 has a plurality of ports (DS1, DS2,..., DSn) 18 which are individually connected to peripheral devices such as a printer 15, a keyboard 16, a mouse 17, etc. , 18, ...
.., And distributes the control data supplied via the first and second serial bus input terminals 4 and 5 and the second switch means 13 to each peripheral device connected to the port 18.

Therefore, in the present embodiment, when the first personal computer 6 is selected by the switching instruction means 12, a display based on the video signal output from the first personal computer 6 is displayed on the display panel 10, and Each peripheral device and the first personal computer 6 are connected to the first serial input unit 4 and the second switch unit 1.
3. The connection is established via the USB hub 14 and the port 18, and the peripheral device can be controlled by the first personal computer 6 while watching the display on the display panel 10. Further, when the second personal computer 7 is selected by the switching instruction means 12, a display based on the video signal output from the second personal computer 7 is made on the display panel 10, and each peripheral device and the second personal computer 7 are connected. Is connected via the first serial input means 5, the second switch means 13, the USB hub 14 and the port 18, and the second
Peripheral devices can be controlled by the personal computer 7.

In this embodiment, the first and second video input terminals 2 and 3 and the first and second serial input means 5 and 6 have been described as devices connected to the personal computer. The apparatus is not limited, and may be any device that can output a video signal and / or control data for a peripheral device.

[0014]

As described above, according to the present invention, a plurality of video input terminals, a plurality of serial input terminals, and a display device capable of distributing control data supplied from the serial input terminals to peripheral devices are provided. Since the peripheral device can be controlled by the device that supplies the video signal that is always displayed, the convenience can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display device 2 1st video input terminal 3 2nd video input terminal 4 1st serial input terminal 5 2nd serial input terminal 6 1st personal computer 7 2nd personal computer 8 1st image data control part 9 2nd image data control part 10 Display panel 11 First switch means 12 Switching instruction means 13 Second switch means 14 USB hub 15 Printer 16 Keyboard 17 Mouse 18 Port

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B069 AA01 KA06 5B077 NN02 5C082 AA01 AA22 AA24 AA32 BB01 CA76 CA84 CB05 DA51 MM09

Claims (4)

[Claims] 1. A plurality of video signal input terminals, means for selecting a video signal input from one of the signal input terminals,
Means for generating display data based on the video signal selected by the signal selecting means, a plurality of control data input terminals, means for selecting control data input from one of the data input terminals, A port for connecting a peripheral device controlled based on data, a means for distributing control data selected by the data selection means to the peripheral device via the port, and a video signal and a control signal corresponding to each other. A display device comprising: a signal selecting unit for selecting data; and a unit for instructing selection of the data selecting unit. 2. A first to a first input device for inputting a video signal output from each of first to n-th devices (n is a positive integer of 2 or more).
An n-th video signal input terminal, means for selecting a video signal input from one of the signal input terminals, means for generating display data based on the video signal selected by the signal selection means, First to n-th control data input terminals for inputting control data output from the first to n-th devices, and means for selecting control data input from one of the data input terminals; A port for connecting a peripheral device controlled based on the control data, a means for distributing the control data selected by the data selection means to the peripheral device via the port,
And a means for instructing selection of the signal selection means and the data selection means in response to the selection. 3. The apparatus according to claim 2, wherein
(Positive integer of 2 ≦ m ≦ n) In response to the selection of the device, the signal selecting means and the data selecting means are instructed to select the input from the m-th video signal input terminal and the m-th control data input terminal, respectively. A display device, comprising: 4. A display device according to claim 1, wherein said first to n-th control data input terminals, said ports and said distribution means according to claim 1 are USB standard.