JPH05158585A - Power source control system for work station - Google Patents

Abstract

PURPOSE:To obtain the power source control system for a server work station for grasping surely a fact that a client work station is not using the server work station, and executing power source control for disconnecting a power source, even in the case plural server and client work stations exist on a network, in the case of disconnecting the power source of the server work station. CONSTITUTION:A server work station 12 is provided with a switch depression detecting means 20, a communication means 21, a guidance display means 15, a power source disconnecting means 16, and a power source control means 13 for confirming a service continuation request to a client work station and disconnecting a power source at the time of disconnecting the power source. On the other hand, the client work station 11 is provided with a communication means 22, and a notice responding means 23 for responding to a service continuation confirming notice from the server work station 12. In the case plural server work stations exist, the notice responding means 23 responds only to the server work station which is providing a service to be utilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network system including a first work station and a second work station which uses the resources of the first work station. Is a power supply control method for the first work station, which confirms that the other second work station is not in use and executes power-off control.

[0002]

2. Description of the Related Art As a conventional power-off control system for a server workstation, there is one disclosed in, for example, Japanese Patent Laid-Open No. 3-100712. This will be described with reference to FIGS. 9 and 10. In the following description, the first workstation shown in the claims will be referred to as a server workstation as an example, and the second workstation will be referred to as a client workstation as an example.

FIG. 9 is a block diagram showing this principle. In the network system 10 including the server workstation 12 having the printer 18 and the external storage device 19 and the client workstation 11 using those resources, the server workstation 12 is
A switch pressing detection means 20, a communication means 21 for receiving a notification from the client workstation 11, a busy storage means 14 for storing whether or not a client workstation 11 that is using the server workstation 12 exists, Guidance display means 15,
The client workstation 1 is provided with a power-off means 16 and a power-supply control means 13 for controlling power-off.
1 comprises a communication means 22 for transmitting a use start and use end notification to the server workstation 12. The client workstation 11 can be used by requesting the server workstation 11 for resources such as the printer 18 and the external storage device 19 of the server workstation 12.

Next, the operation of the prior art will be described with reference to FIG. 10 showing the flow of processing of the power control means on the server workstation 12. When the client workstation 11 is turned on or an application program is started, the client workstation 1
1 transmits a use start notification to the server workstation 12 by the communication means 22. The server workstation 12 receives this via the communication means 21 (see FIG.
The process P1 of 0) determines that this is a use start notification (processes P2 and P3), and the in-use storage means 14 stores that fact (process P4). When the operator of the server workstation 12 presses the power switch, the switch press detecting means 20 detects it (process P1) and determines it as a switch press notification (process P).
2) When the in-use storage means 14 is checked, the client workstation 11 is in use (process P7).
The guidance display means 15 displays the guidance (process P8) and suspends power off. Here, when the operator of the client workstation 11 presses the power switch, the client workstation 11
Is the server workstation 1 via the communication means 22.
After the usage is finished in 2, the power is cut off. The server workstation 12 which has received this use end notification by the communication means 21 judges this notification (processes P1, P
2, P3), because guidance is currently being displayed (process P
5) Power off is performed by the power off means 16 (process P
9). If the client workstation 11 powers off before the server workstation 12 presses the power switch, the server workstation 12
Determines that the notification received by the communication means 21 is a use end notification (steps P1, P2, P3), and checks whether the guidance is being displayed (step P5). Since it is not in the hold state, the in-use storage means 14 is reset (step P6).

When a plurality of client workstations request and use the resources of the server workstation 12, the information indicating that the client workstation is in use is stored not as a flag but as a counter indicating the number of client workstations. The value of the counter is incremented by +1 in the usage start notification from the client workstation, and conversely by -1 in the usage end notification.
At that time, if the counter value is 0 and the guidance is displayed, the power is cut off.

[0006]

Since the conventional technique operates as described above, for example, the client workstation has stopped abnormally, and the end-of-use notification is sent even though the start-of-use notification has already been sent to the server workstation. If the data cannot be sent, the contents stored in the in-use storage means of the server workstation and the actual usage status of the client workstation will not match.

That is, when the busy storage means of the server workstation stores the information on the busy client workstation by means of a flag, the client workstation recovers from the abnormal stop and the power is cut off normally so that the server is shut down. Until the end-of-use notification is sent to the workstation, the in-use storage means stores that the service provided by the server workstation is in use, so that the client workstation keeps the service while the client workstation is out of order. The server workstation cannot perform a power down and the operation of the server workstation cannot quickly reflect the operator's intent.

Further, when the in-use storage means stores information on the use of the client workstation by the counter, the client workstation which has abnormally stopped without sending the use start notification but the use end notification is recovered from the error. When a new use start notification is issued, the counter value stored in the in-use storage means becomes larger than the number of client workstations actually using the server workstation. For this reason,
Even if all the client workstations send the usage end notifications to the server workstations properly due to the normal power-off operation later, the counter value does not become 0 and the server workstations cannot execute the power-off. That is, in order to execute the power-off of the server workstation, the operator of the server workstation confirms the operation status of all client workstations that can use the server workstation and reflects the investigation result. There is a problem in that it is necessary to correct the counter value to the value, and a great amount of labor is required for the operator of the server workstation.

The invention according to claim 1 was made to solve the above-mentioned problems, and the client workstation does not store information while the server workstation is in use, and the client workstation is appropriately turned off when the power is turned off. If the client workstation stops abnormally by inquiring about the service continuation request to the server workstation, the client workstation stops responding to the inquiry, so that the server workstation can be quickly turned on without being affected by the abnormality of the client workstation. The purpose of the present invention is to reduce the burden on the operator by ensuring that the operator's intention can be reflected.

According to a second aspect of the present invention, when a plurality of server workstations exist in the network system according to the first aspect, the client workstation provides a service to be used by the server workstation. By responding the service continuation request notification only to the continuation confirmation notification, if all client workstations that use the service provided by the server workstation are powered off, the service provided by the server workstation is not used. An object of the present invention is to enable execution of power-off of the server workstation even when the client workstation is operating, and promptly reflect the intention of the operator.

[0011]

The present invention has been made to solve the above problems, and the invention according to claim 1 uses a server workstation and the resources possessed by the server workstation. In a network system including a client workstation, the server workstation described above provides communication means for communicating with the client workstation via a network and power-off information when powering off the server workstation. Sending a service continuation request notification from a client workstation equipped with a power interruption detection means to detect and a service continuation confirmation notification to the client workstation by the power interruption detection, and a notification response means to respond to the transmission of the service continuation confirmation notification. If received, other Power supply control means for determining that the workstation is in use, issuing a service continuity confirmation notification until it does not receive the transmission, and turning off the power of the server workstation when there is no transmission from the client workstation It is a power control system for workstations.

Further, when the communication response means of the client workstation receives the service continuation confirmation notification from the server workstation by the communication means, the server workstation of the transmission source is the client workstation. Power control means for turning off the power of the server workstation, characterized in that a service continuation request notification is transmitted to the server workstation only when the server workstation is providing the service used by the station. This is a power control system for the workstation provided.

[0013]

When the server workstation does not store the information that the client workstation is in use, and when the client workstation is abnormally stopped by inquiring the client workstation for a service continuation request when the power is turned off, the client workstation is stopped. Since the station becomes unresponsive, the server workstation can quickly power down without being affected.

According to the invention of claim 2, claim 1
In the described invention, if all client workstations that use the service provided by a server workstation are powered off, even if client workstations that do not use the service provided by the server workstation are operating, The server workstation can be turned off.

[0015]

【Example】

Example 1. A practical example of claim 1 of the present invention is shown in FIGS.
This will be described with reference to FIGS. 3, 4, 5, and 6. FIG. 1 shows the principle configuration of the present invention. In the figure, 10 is a network system including workstations, 11 is a client workstation, and 12 is a server workstation. Server workstation 12
Uses the power switch as a source of power cut information,
As means for detecting power-off, a switch-press detection detection means 20 for detecting power switch pressing, a communication means 21 for communicating with the client workstation 11 via the network 10, a guidance display means 15 for displaying guidance, and a power source. The power-off means 16 for disconnecting and the power-down switch detecting means 20 for detecting that the power-off switch is pressed, and the communication means 21 transmits a service continuation confirmation notice to the client workstation 11.
When a reply of the service continuation request notification is received from the client workstation 11, the client workstation 11 displays it by the guidance display means 15 indicating that the server workstation 12 is in use, and thereafter, by the communication means 21. Until the client workstation 11 does not receive the service continuation request notification, the service continuation confirmation notification is repeatedly transmitted to the client workstation 11. When the client workstation 11 does not receive the service continuation request notification, the power cutoff unit 16 sends the service continuation request notification. The client workstation 11 is provided with a power control means 13 for powering off the server workstation 12.
Is a server workstation 12 and a network 10
The communication means 22 for communicating via the server and the notification response means for returning the service continuation request notification to the server workstation 12 when the service continuation confirmation notification transmitted from the server workstation 12 is received. ..

An outline of the operation of this embodiment having the above structure will be described with reference to the example shown in FIG. 1) to 7) in the following description correspond to 1 to 7 shown in FIG. 1) The operator of the server workstation 12 presses the power switch. 2) The server workstation 12 sends a service continuation confirmation notification to the client workstation 11 and waits for a service continuation request notification from the client workstation 11. 3) Since the client workstation 11 is in the activated state, the service continuation confirmation notice is received from the server workstation 12 and the service continuation request notice is issued to the server workstation 12 which is the transmission source. The server workstation 12 that received the notification
Hold the power-off by displaying the guidance that "Power-off processing is pending because the client workstation is in use." 4) The client workstation 11 turns off the power. 5) The server workstation 12 transmits the service continuation confirmation notification to the client workstation 11 again after a while. 6) The server workstation 12 is allowed to
Wait for the service continuation request notification from. 7) The client workstation 11 has already been powered off, and since there is no response from the client workstation 11 within the time-out period, the server workstation 12 powers off.

The processing for performing the above operation will be described below. The reference numerals used in the following description correspond to the reference numerals in FIG. First, server workstation 1
The processing flow of the power supply control means 13 on the second power supply will be described with reference to FIG. When the switch press detection means 20 detects a power switch press notification (step S1 in FIG. 3), the communication means 2
The service continuity confirmation notification is transmitted to the client workstation 11 by 1 (step S2), and the service continuation request notification from the client workstation 11 is waited for the timeout time (step S3). If the communication means 21 receives the service continuation request notification (step S
4), display 17 by guidance display means 15
A guidance indicating that the client workstation is in use is displayed on (step S5), and an appropriate time is waited until the next service continuation confirmation notification is transmitted (step S6).
If there is no service continuation request notification during the timeout time (step S4), the power-off means 16 executes power-off (step S7). In the step S6, the client workstation 11 is set by setting the waiting time to a short time so as not to load the network.
It is possible to minimize the time from when the power is turned off to when the server workstation 12 is turned off.

Next, the client workstation 1
The flow of processing of the notification response means 23 on 1 will be described with reference to FIG. The notification responding means 23 waits for a notification from the server workstation (process T1 in FIG. 4), and when the communication means 22 receives the service continuation confirmation notification from the server workstation, continues the service to the originating server workstation. Send a request notification (process T
2) Then, the state of waiting for the notification from the server workstation is resumed (step T1).

Example 2. In the above-described first embodiment, a case where a single server workstation and a single client workstation exist on the network for simplification has been described, but the same operation is performed when a plurality of client workstations exist. That is,
In 2) and 5) of FIG. 2, the server workstation serves all workstations on the network or only the workstations that can be client workstations individually or by using the broadcast communication. Send a continuation confirmation notice. In this case, the server workstation suspends the power-off processing until the service continuation request notification is not returned from any client workstation within the timeout period after the service continuation confirmation notification is transmitted. Produce the effect of.

Example 3. Furthermore, even if there are multiple server workstations on the network, FIG.
Since there is no mutual interference between the server workstations in the processing of the server workstations shown in FIG. 5, the individual server workstations can perform the same operation as in the case of only a single server workstation.
Has the same effect as.

Example 4. Next, an outline of the operation of the invention described in claim 2 will be described according to an example shown in FIG. 1) to 4) in the following description correspond to 1 to 4 shown in FIG. 1) The operator of the server workstation 12A presses the power switch. 2) The server workstation 12A sends a service continuation confirmation notification to the client workstation 11. 3) The server workstation 12A keeps the client workstation 1 running for a specified timeout period.
It waits for the service continuation request notification from 1. 4) Since the client workstation 11 uses the service of the server workstation 12B and does not use the server workstation 12A,
Ignores the received service continuity confirmation notification. 5) Since there is no response from the client workstation 11 within the time-out period, the server workstation 12A executes power-off.

The processing for performing the above operation will be described below. The reference numerals used in the following description correspond to the reference numerals in FIG. Here, the processing of the server workstations 12A and 12B is the same as that of FIG. 3 in the first embodiment of the invention described in claim 1. The processing flow of the notification response means 23 on the client workstation 11 will be described with reference to FIG. The notification response means 23 waits for a notification from the server workstation (process U1 in FIG. 6),
When the communication means 22 receives the service continuation confirmation notice from the server workstation, the server workstation which is the sender of the notice is identified (step U2). Then, when the identified server workstation is the server workstation providing the service used by the client workstation 11 (step U3), the communication means 22 sends a service continuation request notification to the server workstation. Send (process U
4) Then, the state of waiting for the notification from the server workstation is resumed (step U1). The identified server workstation is the client workstation 1
If it is not the server workstation that is providing the service used by 1 (step U3), nothing is done and it waits for a notification from the server workstation again (step U1).

Example 5. Note that, although the fourth embodiment has been described for the sake of simplicity in the case where a single client workstation and two server workstations exist on the network, even if there are a plurality of client workstations, the server workstation By operating in the same manner as in the second embodiment, the same effect as in the fourth embodiment can be obtained. Further, the same effect can be obtained even when there are three or more server workstations.

Example 6. Next, in the first to fifth embodiments, the workstations are described as the server workstations and the client workstations, but here, the workstations function as both the server workstations and the client workstations, that is, the first claim. An example will be described in the case of a client & server workstation having the functions of both the workstation and the second workstation. FIG. 7 shows the principle configuration of the client & server workstation 12C. 10 to 12 and 15 to 23 in the figure are the same as those in FIG. Power control means 13
A also has notification response means 23A, and when operating as a client workstation, notification response means 23A
A sends a service continuation request notification. When the power cutoff is to be executed, the power control means of the client and server workstation 12C is the same as that of the first embodiment starting from the detection of the switch pressing detection means for detecting the pressing of the power cut switch as the server workstation. Execute power off.

The processing for performing the above operation will be described with reference to FIGS. 7 and 8. The client & server workstation operates as a client workstation or a server workstation by a keyboard or a processing program (not shown) before the power-off switch is pressed (step V1). It operates as a client workstation (step V8). When the service continuation confirmation notification is received from the server workstation 12, the notification response means 23A transmits the service continuation request notification (steps V9 and V10). Detected by pressing the power-off switch and the switch pressing detection means (process V
In the case of 1), the processing flow as the server workstation (steps V2 to V7) is advanced, and the power supply control means executes the power-off of the client & server workstation 12C.

Example 7. Further, in the above-described first to sixth embodiments, the case where the power-off switch is used as the source of the power-off information and the switch pressing detection means is used as the power-off detection means has been described. It is possible to use a timer or information means from the host computer as a power-off detection means for detecting such information, and it is also possible to make the power-off operation of the server workstation unmanned.

[0027]

According to the first aspect of the present invention, the server workstation does not store the information indicating that the client workstation is in use, and when the power is turned off, the client workstation is appropriately inquired of the service continuation request. , If the client workstation stops abnormally, the client workstation will stop responding, so the server workstation can promptly execute the power-off without being affected by it, and the operator's intention is surely reflected, The burden on the operator can be reduced.

According to the invention described in claim 2, when a plurality of server workstations are present in the network system according to claim 1, the client workstation provides a service to be used by the server workstation. Since it is configured to respond only to the continuation confirmation notification, if all client workstations that use the service provided by a server workstation are powered off, the service provided by the server workstation will not be used. Even if the client workstation is operating, the power of the server workstation can be turned off, and the intention of the operator can be promptly reflected.

[Brief description of drawings]

FIG. 1 is a block diagram showing the principle of the present invention.

FIG. 2 is a schematic view of the operation of the first embodiment of claim 1 of the present invention.

FIG. 3 is a server workstation processing flow according to an embodiment of the present invention.

FIG. 4 is a client workstation processing flow according to the first embodiment of the present invention;

FIG. 5 is a schematic view of the operation of an embodiment of claim 2 of the present invention.

FIG. 6 is a client workstation processing flow according to an embodiment of claim 2 of the present invention.

FIG. 7 is a principle configuration diagram of a client & server workstation according to an embodiment of the present invention.

FIG. 8 is a client & server workstation processing flow according to an embodiment of the present invention.

FIG. 9 is a principle configuration diagram of a conventional method.

FIG. 10 is a processing flow of an example of a conventional method.

[Explanation of symbols]

 10 Network 11 Client Workstation 12 Server Workstation 13 Power Supply Control Means 14 In-Use Storage Means 15 Guidance Display Means 16 Power Off Means 17 Display 18 Printer 19 External Storage Device 20 Switch Press Detection Means 21 Communication Means 22 Communication Means 23 Notification Response Means

Claims (2)

[Claims] 1. A first workstation and the first workstation
In a network system including a second workstation that uses the resources of the workstation, the first workstation includes a communication unit that communicates with the second workstation via a network, and When trying to turn off the power of the workstation, the power interruption detection means for detecting the power interruption information and the service continuity confirmation notification are sent to the second workstation by the power interruption detection, and the service continuation confirmation notification is issued. When the service continuation request notification is transmitted from the second workstation equipped with the notification response means for responding, it is determined that another workstation is in use, and the service continuation confirmation notification is issued until the transmission is not received. And second
The power control system for the workstation, further comprising a power control means for turning off the power of the first workstation when there is no transmission from the workstation. 2. When the communication response means of the second workstation receives the service continuation confirmation notification from the first workstation by the communication means, the first workstation of the transmission source is the second workstation. The power supply control method for a workstation according to claim 1, wherein a service continuation request notification is transmitted to the first workstation only when the first workstation is providing the service used by the station. ..