CN1439947A

CN1439947A - A device for switching screens and inputting commands via network transmission

Info

Publication number: CN1439947A
Application number: CN 02105319
Authority: CN
Inventors: 刘文山; 胡竹生; 廖俊期
Original assignee: Liling Science & Technology Co ltd
Current assignee: Liling Science & Technology Co ltd
Priority date: 2002-02-22
Filing date: 2002-02-22
Publication date: 2003-09-03

Abstract

The invention provides a device for switching pictures and inputting commands through network transmission, which is connected with a plurality of remote computers through a network so that a user can select and switch screen pictures of the remote computers by using control commands of an input unit, or a remote control program issues operation control commands through the network and sends received real-time pictures of the remote computers to a display unit.

Description

By the device of Network Transmission with image switching and input command

Technical field

The present invention is a kind of by the device of Network Transmission with image switching and input command, refers to a kind of real-time pictures by network receiving remote computing machine especially, and exports the device of display unit to.

Background technology

Generally share the occasion of a display at many computing machines, share projector output PowerPoint picture as several computing machines in meeting room, it is normally reached by a computer switch (KVM switch) and arrange in pairs or groups keyboard or mouse on the practice, if will on the screen of institute of projector projection, show the picture of a certain computing machine, as long as the switch key on this computer switch panel is located in operation.

When the computer platform number of serial connection the more the time, the online complexity that just heals of this computer switch, switch key also the more, thus, just can be subjected to the restriction of entity space, again, because of the connecting line that is connected in series with these computing machines elongates apart from meeting, signal just can weaken, and in other words, well known device only is suitable for short distance to be used.

If do not use switch, then must manually plug the signal connecting line of this display, be forwarded to again on another computing machine, this Plug Action is not only consuming time, and may cause misoperation or facility to damage because of mispluging.

Moreover another shortcoming of line switching signal is: when switching between different computer picture signals, may not have the situation of picture output because of factors such as sweep frequency or impedance do not match cause this display.

Take a broad view of above-mentioned all as problem, if can pass through Network Transmission, entity space, online distance and volume size etc. are restricted; Therefore, inventor spy concentrates on studies and cooperates the utilization of scientific principle, design one can be directly real-time pictures by network receiving remote computing machine, and export the device of display unit to.

Summary of the invention

A purpose of the present invention, being to provide one can be by the device of Network Transmission with image switching and input command, be to be connected with plural platform remote computer by network, so that it is available for users to utilize the control command of input block to come image switching, or assign control command via network by remote control program, deliver to display unit with the real-time pictures of the remote computer that will receive.

Another object of the present invention is to provide one can reach by the device of Network Transmission with image switching and input command by the hardware software program of arranging in pairs or groups.

Another purpose of the present invention is by this Design of device, the display frame of present remote computer can be stored into historical picture, and can switch demonstration in real-time pictures and a plurality of historical picture intercropping that has stored at present.

In order to reach above-mentioned purpose, it is a kind of by the device of Network Transmission with image switching and input command that the present invention mainly provides, comprise a display unit, one input block, a plural number platform remote computer and a modular unit, wherein, this input block is used the action of desiring to control for user's input and is produced control command, this plural number remote computer is provided with in-line procedures and/or control program separately, wherein: this in-line procedures is encoded in order to the picture that this remote computer is shown, package (packet) becomes pixel data, the control command that this control program is produced when the user operates in order to the input end that transmits this remote computer, this modular unit is online by network and these remote computers, and be connected in this input block and this display unit, the control command of assigning in order to the input end that receives this input block or this remote computer, and the real-time pictures of this remote computer delivered to this display unit after treatment; Or present display frame stored into historical picture; Or with present real-time pictures and several historical pictures that has stored do switching demonstration.

It is a kind of by the device of Network Transmission with image switching and input command that the present invention provides in addition, it is the picture that remote computer was selected, switched to a control command that receives input block, or assign control command via network by remote control program, so that the real-time pictures of remote computer is delivered to display unit, simultaneously present display frame can be stored into historical picture, and can switch demonstration in present real-time pictures and a plurality of historical picture intercropping that has stored, comprise: a microprocessor, be connected in this input block, be the control core; One first memory element is connected in this microprocessor, in order to stored routine and system data; One network interface controller is connected in this microprocessor, and is connected with plural remote computer by network; One second memory element is connected to this microprocessor and this network interface controller, and in order to the remote computer that will choose, it is stored via the real-time pixel data that network transmitted; One picture frame impact damper (Frame Buffer), be connected in this microprocessor and this second memory element, in order to the real-time pixel data in this second memory element is converted to image frame (frame) data, wherein: this picture frame impact damper can with the image frame data conversion storage to this first memory element or this second memory element as historical picture; One graphics video switching controller is connected in this microprocessor and this picture frame impact damper, in order to reading the image frame data of this picture frame impact damper, and converts the analog or digital vision signal to and exports display unit to.

Reach technology, means and the effect that predetermined purpose is taked in order to make the auditor can further understand the present invention, see also following about detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, when can deeply and specifically understanding thus, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the present invention is limited.

Description of drawings

Fig. 1 is a hardware structure diagram of the present invention.

Fig. 2 is a hardware structure diagram of the present invention.

Fig. 3 is the circuit block diagram of modular unit of the present invention.

Fig. 4 is an operational flowchart of the present invention.

Description of reference numerals:

1: display unit 2: input block

3: remote computer

31: in-line procedures 32: control program

33: input end

4: modular unit

41: microprocessor 42: flash memory

43: network interface controller 44: random access memory

45: picture frame impact damper 46: the graphics video switching controller

Embodiment

See also Fig. 1 and Fig. 2, be hardware structure diagram of the present invention, comprise a display unit 1, an input block 2, plural platform remote computer 3 and a modular unit 4, wherein: this display unit 1 can be displaies such as TV, LCD (LCD) or digital projector.

This input block 2 can be wired or wireless equipment such as keyboard, telepilot, mouse, produces control command for the user imports the action of desiring to control (comprise image switching, select remote computer 3, standby and shutdown etc.).

The quantity of these remote computers 3 is unrestricted, can increase and decrease according to user's demand, these remote computers 3 are provided with an in-line procedures 31 and/or a control program 32 separately, wherein: pixel data is encoded, is packaged into to this in-line procedures 31 with these remote computer 3 shown pictures, 32 input end (as wired or wireless equipment such as keyboard or mouses) 33 control commands that produced when the user operates (it acts on aforesaid input block 2) that transmit this remote computer 3 of this control program.

This modular unit 4 is online with these remote computers 3 by network (using transmission control protocol/procotol TCP/IP) 5, and be connected in this input block 2 and this display unit 1, the control command that its input end 33 that receives this input block 2 or this remote computer 3 is assigned, with image switching, selection remote computer 3, standby and shutdown etc., and deliver to this display unit 1 after the real-time pictures processing with this remote computer 3; Simultaneously, also present display frame can be stored into historical picture, or present real-time pictures and a plurality of historical picture that has stored are done to switch demonstration.

See also Fig. 3, circuit block diagram for modular unit 4 of the present invention, comprise: a microprocessor 41, a flash memory 42, a network interface controller 43, a random access memory 44, a picture frame impact damper 45 and a graphics video switching controller 46, wherein: this microprocessor 41 is connected in this input block 2, is the control core of this modular unit 4.

This flash memory 42 is connected in this microprocessor 41, is a non-voltile memory element, stores program and system data.

This network interface controller 43 is connected in this microprocessor 41, and is connected with these remote computers 3 by this network 5, as communication bridge to each other.

This random access memory 44 is connected to this microprocessor 41 and network interface controller 42, and the remote computer 3 that is chosen to is stored via the real-time pixel data that network 5 is transmitted.

This picture frame impact damper 45 is connected to this microprocessor 41 and this random access memory 44, in order to convert the real-time pixel data in this random access memory 44 to the image frame data.

This graphics video switching controller 46 is connected to this microprocessor 41 and this picture frame impact damper 45, reads the image frame data of this picture frame impact damper 45, and converts thereof into the analog or digital vision signal and export this display unit 1 to and show.

In addition, this picture frame impact damper 45 also can via the operation of this input block 2 with the image frame data conversion storage to this flash memory 42 or this random access memory 44 as historical picture.

See also Fig. 4, be operational flowchart of the present invention.At the beginning, the user can be by a control command selection remote computer 3 (step 100) wherein of these input block 2 inputs, and requirement is online to network 5 (step 102), at this moment, this remote computer 3 promptly can be waited for online (step 104), wait to set up online after, can capture picture data (step 106), and then by its in-line procedures 31 execution codings, package (step 108), then, be resent to this modular unit 4 (step 110), treat that this modular unit 4 receives this package after, promptly separate package, decoding (step 112), then, write to the picture frame impact damper 45 (step 114) of this modular unit 4, and control this graphics video switching controller 46 the image frame data-switching is become analog or digital vision signal (step 116), at last, deliver to this display unit 1 and show (step 118).

In sum, by design improved of the present invention, have characteristics described as follows:

(1) can show the remote computer picture by network.

(2) can connect many computing machines and switch display frame by network simultaneously, and real-time pictures and a plurality of historical picture intercropping that has been stored to random access memory of present remote computer can be switched demonstration.

(3) can assign operation control command by the input end of input block or remote computer.

(4) be not subject to entity space, online distance and volume size.

Therefore, the present invention meets the patented claim requirement fully, has usability on the industry, so file an application according to Patent Law.

The above, only be specific embodiments of the invention, feature of the present invention is not limited thereto, anyly be familiar with this operator in the field of the invention, can think easily and variation or modification, replace as the also available memory element of random access memory, flash memory, all can be encompassed in the following Patent right requirement scope of the present invention with identical effect.

Claims

1. A device for switching screens and inputting commands through network transmission, characterized by: comprising:

a display unit;

An input unit, used for the user to input the action to be controlled to generate a control command;

A plurality of remote computers each have a connection program and/or a control program, wherein: the connection program is used to encode and packetize the picture displayed by the remote computer into pixel data; the control program is used to transmit the remote computer The control command generated when the input end of the device is operated by the user; and

A modular unit, connected to the remote computers through the network, and connected to the input unit and the display unit, is used to receive the control commands issued by the input unit or the input terminal of the remote computer, and display the real-time information of the remote computer The screen is processed and sent to the display unit; or the current display screen is stored as a historical screen; or the current real-time screen and several stored historical screens are switched for display.

2. The device for switching screens and inputting commands through network transmission as claimed in claim 1, wherein the display unit can be a TV, a liquid crystal display or a digital projector.

3. The device for switching screens and inputting commands through network transmission according to claim 1, characterized in that: the input unit can be a wired or wireless device such as a keyboard, a mouse, or a remote controller.

4. The device for switching screens and inputting commands through network transmission according to claim 1, characterized in that: the input end of the remote computer can be a wired or wireless device such as a keyboard or a mouse.

5. The device for switching screens and inputting commands through network transmission as claimed in claim 1, characterized in that: the modular unit further comprises:

A microprocessor, connected to the input unit, is the control core of the modular unit;

a first storage element, connected to the microprocessor, for storing programs and system data;

a network interface controller, connected to the microprocessor, and communicated with the remote computers through the network;

A second storage element, respectively connected to the microprocessor and the network interface controller, is used to store the real-time pixel data sent by the selected remote computer through the network;

A frame buffer (Frame Buffr), connected to the microprocessor and the second storage element, for converting the real-time pixel data in the second storage element into image frame data, wherein:

The frame buffer can dump image frame data to the first storage element or the second storage element as a history frame; and

A graphics and video conversion controller is connected to the microprocessor and the frame buffer, and is used to read the image frame data of the frame buffer, and convert it into an analog or digital video signal and output it to the display unit.

6. The device for switching screens and inputting commands through network transmission as claimed in claim 5, wherein the first storage element is a non-volatile memory.

7. The device for switching screens and inputting commands through network transmission as claimed in claim 6, wherein the non-volatile memory is a flash memory.

8. The device for switching screens and inputting commands through network transmission as claimed in claim 5, wherein the second storage element is a random access memory.

9. A device for switching screens and inputting commands through network transmission, which is to select and switch the screens of a remote computer by receiving a control command from an input unit, or to issue a control command via a network from a remote control program to transfer the remote computer's real-time The screen is sent to the display unit, and the current display screen can be stored as a historical screen at the same time, and can be switched and displayed between the current real-time screen and multiple stored historical screens. Its features include:

A microprocessor, connected to the input unit, is the control core:

A frame buffer, connected to the microprocessor and the second storage element, for converting the real-time pixel data in the second storage element into image frame data, wherein:

The frame buffer can transfer image frame data to the first storage element or the second storage element as a history frame; and

10. The device for switching screens and inputting commands through network transmission according to claim 9, characterized in that: the input unit can be a wired or wireless device such as a keyboard, mouse or remote controller.

11. The device for switching screens and inputting commands through network transmission as claimed in claim 9, wherein the display unit can be a TV, a liquid crystal display or a digital projector.

12. The device for switching screens and inputting commands through network transmission as claimed in claim 9, wherein the first storage element is a non-volatile memory.

13. The device for switching screens and inputting commands through network transmission as claimed in claim 12, wherein the non-volatile memory is a flash memory.

14. The device for switching screens and inputting commands through network transmission as claimed in claim 9, wherein the second storage element is a random access memory.