TWI382314B - Keyboard-video-mouse switch and display switch - Google Patents

Description

Multi-computer switching system and video switching system

The present invention relates to a switching system, and more particularly to a multi-computer switching system and a video switching system.

With the advancement of technology, computers (or servers) have been widely used in enterprises. In a business, the number of computers (or servers) often reaches dozens or even thousands. Information staff can manage these computers (or servers) through a multi-computer switching system. In addition, video players are often used in public places. Operators can manage these video players through a video switching system.

The multi-computer switching system is used to operate a plurality of computers through at least one computer console (Console). The multi-computer switching system is connected to a computer console and a plurality of computers for switching the data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers. For example, when the multi-computer switching system switches the computer console to form a communication with the data stream of one of the computers, the user can operate the computer through the computer console. The action of the operation includes input data and output data.

The video switching system is configured to display a plurality of video sources through at least one screen. The video switching system is used to switch the data flow between the screen and several video sources, so that the screen can display several video sources.

With the increasing use of multi-computer switching systems and video switching systems in enterprises and public places, users are more demanding for the convenience of multi-computer switching systems and video switching systems. Therefore, how to improve the convenience of multi-computer switching system and video switching system is an important direction of current research and development.

The invention relates to a multi-computer switching system and a video switching system, which utilizes a sensing unit to automatically initiate a predetermined action to improve the convenience of use of the multi-computer switching system and the video switching system.

According to an aspect of the present invention, a multi-computer switching system is proposed for operating a plurality of computers through at least one computer console. The computer console includes a keyboard, a screen and a mouse. The multi-computer switching system includes a switching unit, a control unit and at least one sensing unit. The switching unit is connected to a computer console and a plurality of computers for switching the data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers. The control unit is connected to the switching unit for controlling the switching unit. The sensing unit forms a communication with the control unit to sense whether an object exists within a predetermined range, and accordingly outputs a sensing signal. The control unit controls the switching unit according to the sensing signal, and logs in or logs out of a management interface on the computer console.

According to another aspect of the present invention, a multi-computer switching system is proposed for operating a plurality of computers through at least one computer console. The computer console includes a keyboard, a screen and a mouse. The multi-computer switching system includes a switching unit, a control unit and at least one sensing unit. The switching unit is connected to a computer console and a plurality of computers for switching the data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers. The control unit is connected to the switching unit for controlling the switching unit. The sensing unit forms a communication with the control unit to sense whether an object exists within a predetermined range, and accordingly outputs a sensing signal. The control unit controls the switching unit according to the sensing signal to display or hide a login/logout screen on the computer console.

According to still another aspect of the present invention, a multi-computer switching system is provided for operating a plurality of computers through at least one computer console. The computer console includes a keyboard, a screen and a mouse. The multi-computer switching system includes a switching unit, a control unit and at least one sensing unit. The switching unit is connected to a computer console and a plurality of computers for switching the data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers. The control unit is connected to the switching unit for controlling the switching unit. The sensing unit forms a communication with the control unit to sense whether an object exists within a predetermined range, and accordingly outputs a sensing signal. The control unit controls the switching unit according to the sensing signal to turn the screen on or off at the computer console.

According to another aspect of the present invention, a multi-computer switching system is provided for operating a plurality of computers through at least one computer console. The computer console includes a keyboard, a screen and a mouse. The multi-computer switching system includes a switching unit, a control unit and at least one sensing unit. The switching unit is connected to a computer console and a plurality of computers for switching the data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers. The control unit is connected to the switching unit for controlling the switching unit. The sensing unit forms a communication with the control unit to sense whether an object exists within a predetermined range, and accordingly outputs a sensing signal. The control unit controls the switching unit according to the sensing signal, and displays or hides one of the switching unit operation information on the computer console.

According to still another aspect of the present invention, a video switching system is provided for displaying a plurality of video sources through at least one screen. The video switching system includes a switching unit, a control unit, and at least one sensing unit. The switching unit is connected to the screen and a plurality of video sources for switching the data flow between the screen and the plurality of video sources, so that the screen can display one of the plurality of video sources. The control unit is connected to the switching unit for controlling the switching unit. The sensing unit forms a communication with the control unit to sense whether an object exists within a predetermined range, and accordingly outputs a sensing signal. The control unit controls the switching unit according to the sensing signal to display one of the plurality of video sources on the screen.

In order to make the above-mentioned contents of the present invention more comprehensible, the preferred embodiments are described below, and the detailed description is as follows:

First embodiment

Referring to FIG. 1 , a schematic diagram of a Keyboard-Video-Mouse Switch (KVM Switch) 100 according to a first embodiment of the present invention is shown. The multi-computer switching system 100 is configured to transmit at least one computer console ( Console) CS operates several computers PC1~PCN. The computer console CS includes a keyboard, a screen and a mouse. The KVM switching system 100 includes a switching unit 110, a control unit 120, and at least one sensing unit 130. In this embodiment, a plurality of computers PC1~PCN, a computer console CS and a sensing unit 130 are taken as an example for description. The switching unit 110 is connected to the computer console CS and the plurality of computers PC1~PCN for switching the data flow between the computer console CS and the plurality of computers PC1~PCN, so that the computer console CS can control several computers PC1~ One of the PCN. The control unit 120 is connected to the switching unit 110 for controlling the switching unit 110. For example, when the switching unit 110 switches the computer console CS to form communication with one of the computers PC2, the user can operate the computer PC2 by the computer console CS. The action of the operation includes input data and output data.

The sensing unit 130 forms a communication with the control unit 120 to sense whether an object exists within a predetermined range, and accordingly outputs a sensing signal S10. The control unit 120 controls the switching unit 110 according to the sensing signal S10, and logs in or logs out of a management interface on the computer console CS. The management interface is provided by the KVM switching system 100. The multi-computer switching system 100 can be operated after the user logs in to the management interface. When the user logs out of the management interface, the KVM switching system 100 cannot be operated. In general, when logging in to the management interface, the user needs to enter the account name and account password. When the user logs out of the management interface, the user needs to trigger a logout option.

Please refer to FIG. 2, which shows a control flow chart of the KVM switching system 100 according to the first embodiment of the present invention. First, in step 0102, the sensing unit 130 senses whether an object exists within a predetermined range, and accordingly outputs a sensing signal S.

Next, in step 0104, the control unit 120 receives the sensing signal S10, and determines that the content of the sensing signal S10 represents the state of "predetermined range existing object" or the state of "predetermined range non-existing object". If the sensing signal S10 represents the state of "the object exists within the predetermined range", the process proceeds to step 0106; if the sensing signal S10 represents the state of "the object does not exist within the predetermined range", the process proceeds to step 0108.

In step 0106, the control unit 120 controls the switching unit 110 to log in to the management interface at the computer console CS.

In step 0108, the control unit 120 controls the switching unit 110 to log out of the management interface at the computer console CS.

The computer console CS and the multi-computer switching system 100 can be integrated in the same machine, such as an LCD KVM. The computer console CS and the multi-computer switching system 100 can also be independently set. The sensing unit 130 can be disposed in a range of possible activities when the user operates the computer console CS. For example, the sensing unit 130 can be directly mounted on the screen of the computer console CS, or the sensing unit 130 can also be disposed in the vicinity of the screen of the computer console CS to sense whether there is a user within a predetermined range. In this way, it is known whether the user leaves the computer console CS.

The sensing signal S10 of the sensing unit 130 can be transmitted to the control unit 120 in a wireless transmission manner or a wired transmission manner. In this embodiment, the sensing unit 130 and the control unit 120 are connected in a wired transmission manner. As shown in FIG. 1 , the sensing unit 130 further includes a first connection port 131 . The control unit 120 further includes a second port 121. The first port 131 and the second port 121 are connected by a transmission line L, and the sensing signal S10 is transmitted to the control unit 120 via the first port 131, the transmission line L and the second port 121.

When the user approaches the predetermined range of the sensing unit 130, the control unit 120 can know that the user approaches the screen of the computer console CS through the content of the sensing signal S10, and then controls the switching unit 110 to operate the computer. The station CS automatically logs into the management interface. In this way, the user can log in to the management interface immediately after approaching the computer console CS without having to specifically enter the account name and account password. On the other hand, when the user leaves the predetermined range of the sensing unit 130, the control unit 120 can know that the user has left the screen of the computer console CS through the content of the sensing signal S10, and then controls the switching unit 110 to operate the computer. The station CS automatically logs out of the management interface. In this way, the user can automatically log out of the management interface immediately when leaving the computer console CS without having to select a certain logout option.

In addition, in some of the KVM switching systems 100 where the security requirements are high, the control mode of the control unit 120 has a high degree of security considerations. For example, in a state where the sensing signal S10 represents an object within a predetermined range, the control unit 120 still asks the user to input an account name and an account password at the computer console CS. The control unit 120 automatically logs out of the management interface on the computer console CS only in a state where the sensing signal S10 represents that there is no object within the predetermined range.

Second embodiment

Please refer to FIG. 3, which illustrates a schematic diagram of a multi-computer switching system 200 in accordance with a second embodiment of the present invention. The multi-computer switching system 200 of the present embodiment is different from the multi-computer switching system 100 of the first embodiment in that the sensing unit 230 and the control unit 220 are connected in a wireless transmission manner, and the rest are not repeated.

As shown in FIG. 3, the sensing unit 230 further includes a first wireless transmission module 231. The control unit 220 further includes a second wireless transmission module 221, and the sensing signal S20 is transmitted through the first wireless transmission module 231. The second wireless transmission module 221 is delivered to the control unit 220. When the computer console CS and the control unit 220 are far away, connecting the sensing unit 230 and the control unit 220 by wireless transmission can save a long and messy transmission line. Alternatively, the sensing unit 230 can be disposed on a wall or a desktop according to the range of motion of the user, which is quite convenient.

Third embodiment

Please refer to FIG. 4, which is a schematic diagram of a multi-computer switching system 300 according to a third embodiment of the present invention. The multi-computer switching system 300 of the present embodiment is different from the multi-computer switching system 100 of the first embodiment in that the multi-computer switching system 300 of the present embodiment further includes a timing unit 340, and the rest of the same is not repeated.

The timing unit 340 forms a communication with the control unit 120 for calculating the accumulated time T of the sensing signal S10 being one of the same states. The control unit 120 further controls the switching unit 110 according to the accumulated time T, and logs in or logs out of the management interface at the computer console CS.

Referring to FIG. 5, a control flow chart of the KVM switching system 300 according to the third embodiment of the present invention is shown. First, in step 0302, the sensing unit 130 senses whether an object exists within a predetermined range, and accordingly outputs a sensing signal S10, wherein the sensing signal S10 has a first state representing a "predetermined range of existing objects" and Represents the second state of "the object does not exist in the predetermined range."

Next, in step 0304, the timing unit 340 calculates the cumulative time T that the sensing signal S10 continues to be in the same state, and when the state of the sensing signal S10 changes, the accumulated time T is zeroed.

Then, in step 0306, the control unit 120 determines whether the accumulated time T is greater than a predetermined time (for example, 5 seconds). If the accumulated time T is greater than the predetermined time, step 0308 is performed; if the accumulated time T is not greater than the predetermined time, then return to step 0302.

In step 0308, the control unit 120 determines that the content of the sensing signal S10 represents the state of the "predetermined range existing object" or the state of "predetermined range non-existing object". If the sensing signal S10 represents the state of "the object exists within the predetermined range", the process proceeds to step 0310; if the sensing signal S10 represents the state of "the object does not exist within the predetermined range", the process proceeds to step 0312.

In step 0310, the control unit 120 controls the switching unit 110 to log in to the management interface at the computer console CS.

In step 0312, the control unit 120 controls the switching unit 110 to log out of the management interface at the computer console CS.

Please refer to FIG. 6 , which shows a timing chart of the state of the sensing signal S10 and a timing chart of the state of the login or logout of the management interface. In the present embodiment, the predetermined time is exemplified by 5 seconds. Between the 4th and 5th seconds, the sensing signal S10 represents the state in which no object exists within the predetermined range, but the accumulated time T is only 1 second. Therefore, the indication between the 4th and 5th seconds may be that the user accidentally deviates from the predetermined range, and the user does not leave the computer console CS. Thus, the control unit 120 does not perform the logout action in the 5th second.

Between the 17th and 40th seconds, the sensing signal S10 represents a state in which no object exists within a predetermined range, and the accumulated time T has exceeded the predetermined time (5 seconds) at the 22nd second. Therefore, between 17 and 22 seconds, the user does leave the computer console CS. Thus, the control unit 120 performs the logout action after the 22nd second.

Between the 40th and 42nd second, the sensing signal S10 represents the state of the object within the predetermined range, but the accumulated time T is only 2 seconds. Therefore, between 40 and 42 seconds, it is indicated that only an object has passed the predetermined range, and the user is not ready to operate the computer console CS. Thus, the control unit 120 does not perform the login action at the 42nd second.

Between the 50th and 60th second, the sensing signal S10 represents the state of the object within the predetermined range, and the accumulated time T has exceeded the predetermined time (5 seconds) at the 55th second. Therefore, between 50 and 60 seconds means that the user is indeed ready to operate the computer console CS. Thus, the control unit 120 performs the login action after the 55th second.

In this way, the control unit 120 can more accurately determine whether the user has actually left the computer console CS or is ready to operate the computer console CS by using the data of the sensing signal S10 and the accumulated time T, thereby avoiding misjudgment. Dilemma.

Of course, in some KVM switching systems 300 where the security requirements are high, the control unit 120 has a high security consideration. For example, in a state where the sensing signal S10 represents an object within a predetermined range, the control unit 120 still asks the user to input an account name and an account password at the computer console CS. The control unit 120 automatically performs the logout action only when the sensing signal S10 represents that there is no object within the predetermined range and the accumulated time T is greater than the predetermined time.

Fourth embodiment

Please refer to FIG. 7, which is a schematic diagram of a multi-computer switching system 400 according to a fourth embodiment of the present invention. The multi-computer switching system 400 of the present embodiment is different from the multi-computer switching system 100 of the first embodiment in that the multi-computer switching system 400 of the embodiment is a plurality of computers PC1~PCN and a plurality of computer operating stations CS1~ The CSN and the plurality of sensing units 430(1) to 430(N) are taken as an example for description, and the rest of the similarities are not repeated.

As shown in FIG. 7, each of the sensing units 430(1) to 430(N) corresponds to one of a plurality of computer stations CS1 to CSN. The control unit 120 controls the switching unit 110 to log in or log out of the management interface at the corresponding station CS1~CSN according to the received sensing signals S41~S4N. The control unit 120 processes the received sensing signals S41~S4N separately, and controls the corresponding computer operating stations CS1~CSN respectively. Each computer operating station CS1~CSN can be designed to operate independently without interfering with each other.

Fifth embodiment

Please refer to FIG. 8 , which is a schematic diagram of a multi-computer switching system 500 according to a fifth embodiment of the present invention. The multi-computer switching system 500 of the present embodiment is different from the multi-computer switching system 100 of the first embodiment in that the multi-computer switching system 500 of the embodiment further includes a signal conversion unit 550 and a signal conversion unit 560(1)-560. (N), the rest of the same points are not repeated.

The signal conversion unit 550 is electrically connected to the computer console CS, the sensing unit 130, the control unit 120, and the switching unit 110. The signal conversion unit 550 is configured to respectively convert the signal C (such as the mouse signal, the keyboard signal and the screen signal) of the computer console CS and the sensing signal S10 into the first differential signal N1 and the second differential signal N2, respectively. Transfer to the switching unit 110 and the control unit 120. On the other hand, the signal conversion unit 550 can also convert the first differential signal N1 to the signal C of the computer console CS and transmit it to the computer console CS.

The signal conversion units 560(1) to 560(N) are electrically connected to the computers PC1 to PCN and the switching unit 110, respectively. The signal conversion units 560(1) to 560(N) are used to convert the signals P1~PN of the computers PC1~PCN into the third differential signals N3(1)~N3(N), and transmit them to the switching unit 110. On the contrary, the signal conversion units 560(1) to 560(N) can also convert the third differential signals N3(1) to N3(N) to the signals P1~PN of the PC1~PCN and transmit them to the computers PC1~PCN.

Therefore, the signal C of the original computer console CS (including the mouse signal, the keyboard signal, the screen signal) and the sensing signal S10 need four transmission lines for transmission, and the signal conversion unit 550 converts the signals into signals by using the signal mixing coding technology. The first differential signal N1 and the second differential signal N2 are transmitted by only one transmission line. Not only the wire is reduced, but also the number of plugs of the transmission line is reduced, which is quite convenient to use.

Sixth embodiment

Referring to FIG. 9, a schematic diagram of a multi-computer switching system 600 in accordance with a sixth embodiment of the present invention is shown. The multi-computer switching system 600 of the present embodiment is different from the multi-computer switching system 100 of the first embodiment in that the multi-computer switching system 600 of the present embodiment further includes a first signal conversion unit 670 and a second signal conversion unit 680. The rest of the similarities are not repeated.

The first signal conversion unit 670 is electrically connected to the computer console CS and the sensing unit 130 for converting the signal C of the computer console CS and the sensing signal S to a differential signal N. The second signal conversion unit 680 is connected to the first signal conversion unit 670, the control unit 120, and the switching unit 110. After receiving the differential signal N, the second signal conversion unit 680 converts the differential signal N into the signal C and the sensing signal S of the computer station CS, and transmits the signal to the switching unit 110 and the control unit 120, respectively. On the contrary, the second signal conversion unit 680 is the differential signal N of the computer console CS outputted by the switchable switching unit 110, and the first signal conversion unit 680 receives the differential signal N and converts the differential signal N into a computer. The signal C of the console CS is transmitted to the computer console CS.

In addition, while the second signal conversion unit 680 converts the signal, the intensity of the signal is amplified or compensated for the attenuation of the transmission path, so that the signal can be transmitted further.

Seventh embodiment

Please refer to FIG. 10 and FIG. 11 , FIG. 10 is a schematic diagram of a multi-computer switching system 700 according to a seventh embodiment of the present invention, and FIG. 11 is a diagram showing a multi-computer switching system 700 according to a seventh embodiment of the present invention. Control flow chart. The multi-computer switching system 700 of the present embodiment is different from the multi-computer switching system 300 of the third embodiment in that the control unit 720 controls the switching unit 110 according to the sensing signal S10, and displays or hides a login/entry on the computer console CS. Out of the picture, the rest of the same is not repeated.

The login/logout screen provides a login option and a logout option. When the login option is triggered, the login/logout screen further provides a user account field and a user password field for the user to input the user account and the user password to log in to the computer PC1~PCN. When the logout option is triggered, the KVM switch system 700 logs out of the computer.

In step 0710, the control unit 720 controls the switching unit 110 to display a login/logout screen on the computer console CS.

In step 0712, the control unit 720 controls the switching unit 110 to hide the login/logout screen on the computer console CS.

In this embodiment, the sensing unit 130 is disposed near the screen of the computer console CS. When the user approaches the screen of the computer console CS, the control unit 720 controls the switching unit 110 to automatically display the login/logout screen on the screen of the computer console CS. In this way, the user does not need to specifically press a button to display the login/logout screen. On the contrary, when the user leaves the screen of the computer console CS, the control unit 720 controls the switching unit 110 to automatically hide the login/logout screen on the screen of the computer console CS. In this way, the user does not need to specifically press a button to hide the login/logout screen.

Eighth embodiment

Referring to FIG. 12 and FIG. 13 , FIG. 12 is a schematic diagram of a multi-computer switching system 800 according to an eighth embodiment of the present invention, and FIG. 13 is a diagram showing a multi-computer switching system 800 according to an eighth embodiment of the present invention. Control flow chart. The multi-computer switching system 800 of the present embodiment is different from the multi-computer switching system 300 of the third embodiment in that the control unit 820 controls the switching unit 110 according to the sensing signal S10 to turn the screen on or off at the computer operating station CS.

In step 0810, the control unit 820 controls the switching unit 110 to turn on the screen on the computer console CS.

In step 0812, the control unit 820 controls the switching unit 110 to turn off the screen on the computer console CS.

In this embodiment, the sensing unit 130 is disposed near the screen of the computer console CS. When the user approaches the screen of the computer console CS, the control unit 820 controls the switching unit 110 to automatically display the screen on the computer console CS. In this way, the user does not need to specifically press a button to display the screen. On the contrary, when the user leaves the screen of the computer console CS, the control unit 820 controls the switching unit 110 to automatically close the screen on the computer console CS. In this way, the user does not need to specifically press a button to close the screen.

Ninth embodiment

Referring to FIG. 14 and FIG. 15, FIG. 14 is a schematic diagram of a multi-computer switching system 900 according to a ninth embodiment of the present invention, and FIG. 15 is a diagram showing a multi-computer switching system 900 according to a ninth embodiment of the present invention. Control flow chart. The multi-computer switching system 900 of the present embodiment is different from the multi-computer switching system 300 of the third embodiment in that the control unit 920 controls the switching unit 110 according to the sensing signal S10, and displays or hides the switching unit 110 on the computer operating station CS. As for the operation information, the rest of the similarities are not repeated.

The operation information is used to display information required by various users, such as "computer name to be connected", "user account" or "option for switching computers".

In step 0910, the control unit 920 controls the switching unit 110 to display the operation information of the switching unit 110 on the computer console CS.

In step 0912, the control unit 920 controls the switching unit 110 to hide the operation information of the switching unit 110 at the computer console CS.

Tenth embodiment

Please refer to FIG. 16, which is a schematic diagram of a video switching system 1000 according to a tenth embodiment of the present invention. The video switching system 1000 is configured to display a plurality of video sources DS1 DSDSN through at least one screen D. The video switching system 1000 includes a switching unit 1010, a control unit 1020, and at least one sensing unit 1030. In this embodiment, the video switching system 1000 is described by taking one screen D, a plurality of video sources DS1 to DSN, and one sensing unit 1030 as an example. The switching unit 1010 is connected to the screen D and the plurality of video sources DS1 to DSN. The switching unit 1010 is configured to switch the data flow between the screen D and the plurality of video sources DS1~DSN, so that the screen D can display one of the plurality of video sources DS1~DSN. The control unit 1020 is connected to the switching unit 1010. The control unit 1020 is configured to control the switching unit 1010.

The sensing unit 1030 forms a communication with the control unit 1020. The sensing unit 1030 is configured to sense whether an object exists within a predetermined range, and accordingly output a sensing signal S100. The control unit 1020 controls the switching unit 1010 according to the sensing signal S100, and displays one of the video sources DS1 DSDSN on the screen D.

Referring to FIG. 17, a control flow chart of a video switching system 1000 according to a tenth embodiment of the present invention is shown. First, in step 1002, the sensing unit 1030 senses whether an object exists within a predetermined range, and accordingly outputs a sensing signal S100.

Next, in step 1004, the control unit 1020 receives the sensing signal S100, and determines that the content of the sensing signal S100 represents the state of "predetermined range existing object" or the state of "predetermined range does not exist object". If the sensing signal S100 represents the state of "the object exists within the predetermined range", the process proceeds to step 1006; if the sensing signal S100 represents the state of "the object does not exist within the predetermined range", the process proceeds to step 1008.

In step 1006, the control unit 1020 controls the switching unit 1010 to display a video source (for example, the video source DS1) on the screen D.

In step 1008, the control unit 1020 controls the switching unit 1010 to display another video source (for example, the video source DS2) on the screen D.

For example, when the video switching system 1000 of the embodiment is applied to a store, the sensing unit 1030 can be disposed at the entrance of the store. In a state where "the object does not exist in the predetermined range", the control unit 1020 controls the switching unit 1010 to play the "store image advertisement" message on the screen D. In a state where "the object exists in the predetermined range", the control unit 1020 controls the switching unit 1010 to play the message "Welcome" on the screen D. In this way, the screen D can play the message of "store image advertisement", and the message "Welcome" can also be played when the customer enters the door.

Eleventh embodiment

Referring to FIG. 18, a control flow chart of the video switching system 1100 according to the eleventh embodiment of the present invention is shown. The multi-computer switching system 1100 of the present embodiment is different from the multi-computer switching system 1000 of the tenth embodiment in that the video switching system 1100 of the embodiment is a screen D, a plurality of video sources DS1~DSN, and a plurality of senses. The measuring units 1130(1)~1130(N) are taken as an example for description, and the rest of the similarities are not repeated.

Each of the sensing units 1130(1)~1130(N) corresponds to one of the plurality of video sources DS1~DSN. After the control unit 1020 receives the sensing signals S111~S11N generated by one of the sensing units 1130(1)~1130(N), the control switching unit 1010 displays the corresponding video sources DS1~DSN on the screen D.

For example, when the video switching system 1100 of the embodiment is applied to a store, each of the sensing units 1130(1) to 1130(N) can be disposed at various merchandise displays. When the sensing signals S111 to S11N corresponding to the respective products represent the state of "there is no object in the predetermined range", the control unit 1020 controls the switching unit 1010 to play the message of "various commercial continuous advertisements" on the screen D. When the sensing signal S111 corresponding to the A product represents the state of "the object exists within the predetermined range", the control unit 1020 controls the switching unit 1010 to play the message "A product advertisement" on the screen D. In this way, the screen D can play the message of "continuous advertisement of various commodities", and when the customer approaches a certain product, the message "this product advertisement" can also be played on the screen D.

Twelfth embodiment

Referring to FIG. 19, a schematic diagram of a video switching system 1200 in accordance with a twelfth embodiment of the present invention is shown. The multi-computer switching system 1200 of the present embodiment is different from the multi-computer switching system 1000 of the tenth embodiment in that the video switching system 1200 of the embodiment has a plurality of screens D1 to DN, a plurality of video sources DS1 to DSN, and A plurality of sensing units 1230(1) to 1230(N) are illustrated as examples, and the rest of the similarities are not repeated.

Each of the sensing units 1230(1) to 1230(N) corresponds to one of the screens D1 to DN, and is disposed in the vicinity of the corresponding screens D1 to DN. The control unit 1020 controls the switching unit 1010 to display one of the video sources DS1 DSDSN according to the sensing signals S121 S S12N generated by the sensing units 1230(1) to 1230(N).

For example, when the video switching system 1200 of the embodiment is applied to a store, each of the sensing units 1230(1) to 1230(N) and the corresponding screens D1 to DN can be disposed at various merchandise displays. When the sensing signal S121 corresponding to the A product represents the state of "the object does not exist within the predetermined range", the control unit 1020 controls the switching unit 1010 not to play any message on the corresponding screen D1. When the sensing signal S121 corresponding to the A product represents the state of "the object exists within the predetermined range", the control unit 1020 controls the switching unit 1010 to play the message "A product advertisement" on the screen D1 corresponding to the A product. In this way, each screen D1~DN does not play a message at all times, and only the message of "this product advertisement" is played on the screen D1, D2, or DN when the user approaches the corresponding item.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100, 200, 300, 400, 500, 600, 700, 800, 900. . . Multi-computer switching system

110. . . Switching unit

120, 220, 720, 820, 920. . . control unit

121. . . Second connection

130, 230, 430 (1), 430 (2), 430 (N). . . Sensing unit

131. . . Second connection

221. . . Second wireless transmission module

231. . . First wireless transmission module

340. . . Timing unit

550, 560 (1), 560 (2), 560 (N). . . Signal conversion unit

670. . . First signal conversion unit

680. . . Second signal conversion unit

1000, 1100, 1200. . . Video switching unit

1010. . . Switching unit

1020. . . control unit

1030, 1130 (1), 1130 (2), 1130 (N), 1230 (1), 1230 (2), 1230 (N). . . Sensing unit

C. . . Computer console signal

CS, CS1, CS2, CSN. . . Computer console

D, D1, D2, DN. . . Screen

DS1, DS2, DSN. . . Video source

L. . . Transmission line

N. . . Differential signal

N1. . . First differential signal

N2. . . Second differential signal

N3(1), N3(2), N3(N). . . Third differential signal

P1, P2, P3. . . Computer signal

PC1, PC2, PCN. . . computer

S10, S20, S100, S41, S42, S4N, S111, S112, S11N, S121, S122, S12N. . . Sense signal

T. . . cumulative time

1 is a schematic diagram of a multi-computer switching system according to a first embodiment of the present invention; FIG. 2 is a control flow chart of a multi-computer switching system according to a first embodiment of the present invention; 2 is a schematic diagram of a multi-computer switching system according to a third embodiment of the present invention; FIG. 5 is a schematic diagram of a multi-computer switching system according to a third embodiment of the present invention; FIG. 6 is a timing chart showing the state of the sensing signal and a timing chart of the state of the management interface login or logout; FIG. 7 is a schematic diagram of the multi-computer switching system according to the fourth embodiment of the present invention; 8 is a schematic diagram of a multi-computer switching system according to a fifth embodiment of the present invention; FIG. 9 is a schematic diagram of a multi-computer switching system according to a sixth embodiment of the present invention; and FIG. 10 is a seventh embodiment of the present invention. FIG. 11 is a schematic diagram of control of a multi-computer switching system according to a seventh embodiment of the present invention; and FIG. 12 is a diagram showing a multi-computer cutting according to an eighth embodiment of the present invention; FIG. 13 is a flow chart showing control of a multi-computer switching system according to an eighth embodiment of the present invention; and FIG. 14 is a schematic diagram showing a multi-computer switching system according to a ninth embodiment of the present invention; FIG. 16 is a schematic diagram showing a control system of a video switching system according to a ninth embodiment of the present invention; FIG. 16 is a schematic diagram showing a video switching system according to a tenth embodiment of the present invention; a control flow chart of the video switching system; FIG. 18 is a control flow chart of the video switching system according to the eleventh embodiment of the present invention; and FIG. 19 is a schematic diagram of the video switching system according to the twelfth embodiment of the present invention; .

100. . . Multi-computer switching system

110. . . Switching unit

120. . . control unit

121. . . Second connection

130. . . Sensing unit

131. . . Second connection

CS. . . Computer console

L. . . Transmission line

PC1, PC2, PCN. . . computer

S10. . . Sense signal

Claims (33)

A keyboard-Video-Mouse Switch (KVM Switch) for operating a plurality of computers through at least one computer console, the computer console including a keyboard, a screen and a mouse. The computer switching system includes: a switching unit connected to the computer console and the plurality of computers for switching a data flow between the computer console and the plurality of computers, so that the computer console can operate the plurality of computers One of the computers; a control unit coupled to the switching unit for controlling the switching unit; and at least one sensing unit configured to communicate with the control unit to sense whether an object exists within a predetermined range, and And outputting a sensing signal, wherein the sensing signal has a first state and a second state, the first state represents an object existing in the predetermined range, and the second state represents an object in the predetermined range; wherein The control unit controls the switching unit according to the sensing signal, and logs in or logs out of a management interface at the computer console. The multi-computer switching system of claim 1, further comprising: a timing unit configured to communicate with the control unit to calculate a cumulative time that the sensing signal continues to be in the same state, wherein the control unit further The switching unit is controlled according to the accumulated time, and the management interface is logged in or logged out at the computer console. For example, the multi-computer switching system described in claim 2, If the sensing signal represents a state in which the object does not exist within the predetermined range, and the accumulated time is greater than a predetermined time, the control unit controls the switching unit to log in or log out of the management interface at the computer console. The multi-computer switching system of claim 1, wherein the switching unit is electrically connected to a plurality of computer stations, the multi-computer switching system further comprising a plurality of sensing units, each of the sensing units corresponding to the One of the plurality of computer operating stations, the control unit controls the switching unit to log in or log out of the management interface according to each of the sensing signals generated by the sensing unit. The multi-computer switching system of claim 1, wherein the sensing unit and the control unit are connected in a wired transmission manner. The multi-computer switching system of claim 5, wherein the sensing unit further comprises a first port, the control unit further comprising a second port, the first port and the second port The signal is connected by a transmission line, and the sensing signal is transmitted to the control unit via the first connection port, the transmission line and the second connection port. The multi-computer switching system of claim 1, wherein the sensing unit and the control unit are connected in a wireless transmission manner. The multi-computer switching system of claim 7, wherein the sensing unit further comprises a first wireless transmission module, the control unit further comprising a second wireless transmission module, wherein the sensing signal is The first wireless transmission module and the second wireless transmission module are delivered to the control unit. For example, the multi-computer switching system described in claim 1 of the patent scope, The sensing unit is disposed near the screen. The multi-computer switching system of claim 1, further comprising: a signal conversion unit electrically connected to the computer console and the sensing unit, wherein the signal conversion unit is configured to respectively convert the computer console The signal and the sensing signal are a first differential signal and a second differential signal, and are respectively transmitted to the switching unit and the control unit. The multi-computer switching system of claim 1, further comprising: a first signal conversion unit electrically connected to the computer console and the sensing unit for converting the signal of the computer console and the The sensing signal is a differential signal; and a second signal conversion unit is coupled to the first signal conversion unit to receive the differential signal, and convert the differential signal into a signal of the computer console and the sense Test signal. The multi-computer switching system of claim 1, wherein if the sensing signal represents the state of the object within the predetermined range, the control unit controls the switching unit to log in to the management at the computer console interface. The multi-computer switching system of claim 1, wherein if the sensing signal represents a state in which the object does not exist within the predetermined range, the control unit controls the switching unit to log out at the computer console The management interface. A multi-computer switching system (Keyboard-Video-Mouse) The switch (KVM Switch) is configured to operate a plurality of computers through at least one computer console. The computer console includes a keyboard, a screen and a mouse. The KVM switching system includes: a switching unit, and the switch The computer console is connected to the plurality of computers for switching the data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers; a control unit, and the switching a unit connection for controlling the switching unit; and at least one sensing unit, forming communication with the control unit to sense whether an object exists within a predetermined range, and outputting a sensing signal according to the sense The signal signal has a first state and a second state, the first state represents an object existing in the predetermined range, and the second state represents an object in the predetermined range; wherein the control unit controls the switching unit according to the sensing signal Display or hide a login/logout screen on the computer console. The multi-computer switching system of claim 14, wherein if the sensing signal represents the state of the object within the predetermined range, the control unit controls the switching unit to display the login at the computer console / Logout screen. The multi-computer switching system according to claim 14, wherein if the sensing signal represents a state in which the object does not exist within the predetermined range, the control unit controls the switching unit, and the computer operating station hides the Login/logout screen. For example, the multi-computer switching system described in claim 14 The system further includes: a timing unit configured to communicate with the control unit to calculate a cumulative time that the sensing signal continues to be in the same state, wherein the control unit further controls the switching unit according to the accumulated time to operate on the computer The station displays or hides the login/logout screen. The multi-computer switching system according to claim 17, wherein the control unit controls if the sensing signal is in a state that the object does not exist within the predetermined range, and the accumulated time is greater than a predetermined time. The switching unit hides the login/logout screen on the computer console. A keyboard-Video-Mouse Switch (KVM Switch) for operating a plurality of computers through at least one computer console, the computer console including a keyboard, a screen and a mouse. The computer switching system includes: a switching unit connected to the computer console and the plurality of computers for switching a data flow between the computer console and the plurality of computers, so that the computer console can operate the plurality of computers One of the computers; a control unit coupled to the switching unit for controlling the switching unit; and at least one sensing unit configured to communicate with the control unit to sense whether an object exists within a predetermined range, and The sensing signal is outputted, and the sensing signal has a first state and a second state, the first state represents an object existing in the predetermined range, and the second state represents an object in the predetermined range; The control unit controls the switching unit according to the sensing signal, and the screen is turned on or off at the computer console. The multi-computer switching system of claim 19, wherein if the sensing signal represents a state of the object within the predetermined range, the control unit controls the switching unit, and the screen is opened at the computer console . The multi-computer switching system of claim 19, wherein if the sensing signal represents a state in which the object does not exist within the predetermined range, the control unit controls the switching unit to close the computer console Screen. The multi-computer switching system of claim 19, further comprising: a timing unit configured to communicate with the control unit to calculate a cumulative time of the sensing signal for one of the same state, wherein the control unit further The switching unit is controlled according to the accumulated time, and the screen is turned on or off at the computer console. The multi-computer switching system of claim 22, wherein the control unit controls the switching if the sensing signal represents a state in which the object does not exist within the predetermined range, and the accumulated time is greater than a predetermined time. Unit, the screen is closed at the computer console. A keyboard-Video-Mouse Switch (KVM Switch) for operating a plurality of computers through at least one computer console, the computer console including a keyboard, a screen and a mouse. The computer switching system includes: a switching unit connected to the computer console and the plurality of computers for switching a data flow between the computer console and the plurality of computers, so that the computer console can operate one of the plurality of computers; a control unit, coupled to the switching unit, for controlling the switching unit; and at least one sensing unit, forming communication with the control unit to sense whether an object exists within a predetermined range, and outputting a sense a sensing signal, and the sensing signal has a first state and a second state, the first state represents an object existing in the predetermined range, and the second state represents an object in the predetermined range; wherein the control unit is based on the sensing The test signal controls the switching unit, and the operation information of one of the switching units is displayed or hidden on the computer console. The multi-computer switching system of claim 24, wherein if the sensing signal is in a state of the object representing the predetermined range, the control unit controls the switching unit to display on the computer console The operation information of the switching unit. The multi-computer switching system of claim 24, wherein if the sensing signal represents a state in which the object does not exist within the predetermined range, the control unit controls the switching unit, and the computer operating station hides the Switching the operation information of the unit. The multi-computer switching system of claim 24, further comprising: a timing unit, forming communication with the control unit for calculating a cumulative time that the sensing signal continues to be in the same state; wherein the control unit The switching unit is controlled according to the accumulated time, and the operation information of the switching unit is displayed or hidden on the computer console. The multi-computer switching system of claim 27, wherein the control unit controls the switching if the sensing signal represents a state in which the object does not exist within the predetermined range, and the accumulated time is greater than a predetermined time. The unit hides the operation information of the switching unit from the computer console. A video switching system for displaying a plurality of video sources through at least one screen, the video switching system comprising: a switching unit connected to the screen and the plurality of video sources for switching the screen and the plurality of video sources a data stream between the plurality of video sources; a control unit coupled to the switching unit for controlling the switching unit; and at least one sensing unit to form a communication with the control unit The method is configured to detect whether an object exists within a predetermined range, and output a sensing signal according to the sensing signal; wherein the control unit controls the switching unit according to the sensing signal, and displays one of the plurality of video sources on the screen. The video switching system of claim 29, further comprising a plurality of sensing units, each of the sensing units corresponding to one of a plurality of video sources, wherein the control unit is generated according to each of the sensing units The sensing signal controls the switching unit to display one of the plurality of video sources corresponding to the screen. The video switching system of claim 29, wherein the switching unit is electrically connected to a plurality of screens, the video switching system further comprising a plurality of sensing units, each of the sensing units corresponding to the screens The control unit controls the switching unit to display one of the plurality of video sources on each of the corresponding screens according to each of the sensing signals generated by each of the sensing units. The video switching system of claim 29, wherein the sensing unit further comprises a first port, the control unit further comprising a second port, the first port and the second port Connected by a transmission line, the sensing signal is transmitted to the control unit via the first connection port, the transmission line and the second connection port. The video switching system of claim 29, wherein the sensing unit further comprises a first wireless transmission module, the control unit further comprising a second wireless transmission module, wherein the sensing signal is A wireless transmission module and the second wireless transmission module are delivered to the control unit.