CN104123010A

CN104123010A - Method for processing KVM equipment channel memory function

Info

Publication number: CN104123010A
Application number: CN201410346501.5A
Authority: CN
Inventors: 吴之光; 李善荣
Original assignee: Shandong Chaoyue Numerical Control Electronics Co Ltd
Current assignee: Shandong Chaoyue Numerical Control Electronics Co Ltd
Priority date: 2014-07-21
Filing date: 2014-07-21
Publication date: 2014-10-29

Abstract

The invention discloses a method for processing a KVM equipment channel memory function. The method comprises the following steps that firstly, KVM equipment is started and initialized, a current channel position which is formed during a power failure of the last time and is stored in an E2PROM is read, a control unit sets the read channel position as a current channel, and the consecutiveness of channel operation before the power failure is maintained; then, line and field synchronous signals of VGA signals of all channels are scanned circularly, and the control unit can determine whether connection of a computer is available or not simply by reading the value of a register through an I2C bus; the control unit sets a port switch mark according to a read port connection state, and the channels without connection can be automatically skipped when the channels are switched circularly in sequence; meanwhile, the position information of the current channel can be written into the E2PROM by a controller in real time to be stored. According to the method for processing the KVM equipment channel memory function, the information of the availability and the unavailability of the connection of all the channels, the current channel position and the like can be memorized in real time, and using for a user is more convenient and more efficient.

Description

A kind of disposal route of KVM device channels memory function

Technical field

The present invention relates to Computer Applied Technology field, specifically a kind of disposal route of KVM device channels memory function.

Background technology

KVM: the abbreviation that is exactly Keyboard Video Mouse.Computing machine can be accessed and control to KVM switch, by directly connecting keyboard, video and mouse (KVM) port.KVM technology is revised software without destination server.This just means can be under the BIOS of Windows environment, at any time access destination computing machine.KVM provides real mainboard level access, and supports multi-platform server and serial device.

E2PROM (Electrically Erasable Programmable Read-Only Memory), band EEPROM (Electrically Erasable Programmable Read Only Memo)--the storage chip that after a kind of power down, data are not lost.EEPROM can on computers or wipe existing information, reprogramming on specialized equipment.Generally be used in plug and play.

CPLD (Complex Programmable Logic Device) CPLD, is the device that develops out from PAL and GAL device, and scale is large comparatively speaking, and complex structure belongs to large scale integrated circuit scope.Be a kind of user according to needing separately the digital integrated circuit of constitutive logic function voluntarily.Its basic design method is by Integrated Development software platform, by methods such as schematic diagram, hardware description languages, generates corresponding file destination, by download cable (" in system " programming), code is sent in objective chip, realizes the digital display circuit of design.

VGA(Video Graphics Array) being Video Graphics Array, is a kind of video transmission standard, has the advantages such as resolution is high, demonstration speed is fast, color is abundant, in color monitor field, is widely used.

Along with the development of KVM technology, the Intellectualized Tendency of KVM equipment is more and more obvious.Huge computer application system needs some all-in-one computers or server jointly to dispose, and must be managed concentratedly with KVM equipment, realizes the control of each computing machine by frequent switching.According to objective demand, each channel interface computing machine of KVM equipment may not need whole startups, but order also will be switched to the empty road of connecting while switching, and loses time; Or because channel interface is numerous, the reset while again opening KVM equipment causes KVM channel information completely without, channel position having operated while having lost last time power down etc., and KVM equipment is used may bring many worries to user.

Summary of the invention

Technical assignment of the present invention is to provide a kind of disposal route of KVM device channels memory function.

Technical assignment of the present invention is realized in the following manner, the method step is as follows: on KVM equipment, add E2PROM chip, the management platform interface of KVM equipment is connected to upper PS2 keyboard, mouse and display, input end at least accesses main frame VGA and the PS2 key mouse signal wire of a passage, first start KVM equipment initialization, current channel position while reading afterwards the last time power down of preserving in E2PROM, control module is set to the channel position reading to work as prepass, keeps the continuity of power down prepass operation; Then row, the field sync signal of each passage of scan round VGA signal, the value that controller unit only need to read register by I2C bus just can determine that port has or not computing machine to connect; Controller unit arranges port switching mark according to the port connection status that reads, when cyclic switching passage successively, can automatically skip the passage that there is no connection; Meanwhile, controller also can save writing in real time E2PROM when the positional information of prepass.

It is 1 that described row, the passage of field sync signal are put corresponding registers position by CPLD logic, otherwise is 0.

Described controller unit arranges port switching mark according to the port connection status reading, and when cyclic switching passage successively, only at the interchannel that is having computing machine to connect, switches.

Compared to the prior art the disposal route of a kind of KVM device channels memory function of the present invention, can be remembered in real time each passage and have or not the information such as connection, current channel position, and user uses will be more convenient, many efficiently.

Accompanying drawing explanation

Accompanying drawing 1 is a kind of control flow schematic diagram of disposal route of KVM device channels memory function.

Accompanying drawing 2 is a kind of theory diagram of disposal route of KVM device channels memory function.

Embodiment

Embodiment 1:

The process method step of this KVM device channels memory function is as follows: on KVM equipment, add E2PROM chip, the management platform interface of KVM equipment is connected to upper PS2 keyboard, mouse and display, main frame VGA and the PS2 key mouse signal wire of a passage of input end access, first start KVM equipment initialization, current channel position while reading afterwards the last time power down of preserving in E2PROM, control module is set to the channel position reading to work as prepass, keeps the continuity of power down prepass operation; Then row, the field sync signal of each passage of scan round VGA signal, it is 1 that CPLD logic is put corresponding registers position by the passage that has row, field sync signal, otherwise be 0, the value that controller unit only need to read register by I2C bus just can determine that port has or not computing machine to connect; Controller unit arranges port switching mark according to the port connection status that reads, can automatically skip and there is no the passage that connects, the interchannel switching that is only having computing machine to connect when cyclic switching passage successively; Meanwhile, controller also can save writing in real time E2PROM when the positional information of prepass.

Embodiment 1:

The process method step of this KVM device channels memory function is as follows: on KVM equipment, add E2PROM chip, the management platform interface of KVM equipment is connected to upper PS2 keyboard, mouse and display, main frame VGA and the PS2 key mouse signal wire of three passages of input end access, first start KVM equipment initialization, current channel position while reading afterwards the last time power down of preserving in E2PROM, control module is set to the channel position reading to work as prepass, keeps the continuity of power down prepass operation; Then row, the field sync signal of each passage of scan round VGA signal, it is 1 that CPLD logic is put corresponding registers position by the passage that has row, field sync signal, otherwise be 0, the value that controller unit only need to read register by I2C bus just can determine that port has or not computing machine to connect; Controller unit arranges port switching mark according to the port connection status that reads, can automatically skip and there is no the passage that connects, the interchannel switching that is only having computing machine to connect when cyclic switching passage successively; Meanwhile, controller also can save writing in real time E2PROM when the positional information of prepass.

It should be noted that when there being computer physics to connect but after passage shutdown, therefore because passage VGA interface has had row field sync signal, can be considered as without interface channel by controller, only having to meet has physical connection and is that open state just can be scanned computing machine and connects.Passage last scan is without connection, and when next time, scanning had connection, the change port status sign that controller can be real-time, so that blocked operation.

By embodiment above, described those skilled in the art can be easy to realize the present invention.But should be appreciated that the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, described those skilled in the art can the different technical characterictic of combination in any, thereby realizes different technical schemes.

Claims

1. the disposal route of a KVM device channels memory function, it is characterized in that, the method step is as follows: on KVM equipment, add E2PROM chip, the management platform interface of KVM equipment is connected to upper PS2 keyboard, mouse and display, input end at least accesses main frame VGA and the PS2 key mouse signal wire of a passage, first start KVM equipment initialization, current channel position while reading afterwards the last time power down of preserving in E2PROM, control module is set to the channel position reading to work as prepass, keeps the continuity of power down prepass operation; Then row, the field sync signal of each passage of scan round VGA signal, the value that controller unit only need to read register by I2C bus just can determine that port has or not computing machine to connect; Controller unit arranges port switching mark according to the port connection status that reads, when cyclic switching passage successively, can automatically skip the passage that there is no connection; Meanwhile, controller also can save writing in real time E2PROM when the positional information of prepass.

2. the disposal route of a kind of KVM device channels memory function according to claim 1, is characterized in that, it is 1 that described row, the passage of field sync signal are put corresponding registers position by CPLD logic, otherwise is 0.

3. the disposal route of a kind of KVM device channels memory function according to claim 1, it is characterized in that, described controller unit arranges port switching mark according to the port connection status reading, and when cyclic switching passage successively, only at the interchannel that is having computing machine to connect, switches.