JPH07104894A - Document preparing device and method for controlling power to be supplied to memory - Google Patents

Abstract

PURPOSE:To provide a document preparing device and a method for controlling power to be supplied to memory which improves the memory control function and is economically improved as well. CONSTITUTION:When executing an application program in communications mode or the like, power is supplied to a first DRAM 32 but when a system is set in a document preparation mode or a print mode, the supply is not performed. When executing the application mode in the print mode or the communication mode, etc., power is supplied to a second DRAM 34 but when the system is set in the document preparation mode, the supply is not performed. A third DRAM 36 receives the supply of power in all the modes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document creation apparatus having an improved memory function and a method for controlling power supply to a memory.

[0002]

2. Description of the Related Art Conventionally, in a document preparation apparatus, as a storage device for storing document information created or edited and proofread, external application program information, print data at the time of printing, etc. DRAMs have been generally used from the viewpoint of good mountability.

The above-mentioned application program information, print data, etc. are not always necessary, but are used only when executing an application or when printing. However, if the power supply of the main body of the apparatus is on, power is also supplied to the DRAM storing these information and data, and the DRAM is in the normal operation mode.

By the way, some DRAMs have a self-refresh function, and power consumption can be reduced in the self-refresh mode. this is,
When the power supply of the main body of the apparatus is turned off, it is generally used for memory backup.

[0005]

As described above, when the power supply of the main body is turned on, power is constantly supplied to a specific memory used only when executing an external application, and power consumption is reduced. It was a big thing, and it was uneconomical and inconvenient. In particular, since the DRAM that has been used for holding data in the related art consumes more power than the SRAM and the like, the above is remarkable for the document creating apparatus that can be driven by the built-in battery. Was a factor that shortened.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to improve a memory control function and to provide an economically excellent document preparation apparatus and a method for controlling power supply to a memory. To aim.

[0007]

In order to achieve the above-mentioned object, the present invention comprises first storage means for storing control information for creating or editing and proofreading a document and document information created or edited and proofreading. A document creating apparatus including a second storage unit that stores information such as various controls different from the information, and a power supply unit that supplies predetermined power to the first storage unit and the second storage unit. In order to control the power supply from the power supply means to the second storage means based on the information from this means, a means for judging whether or not the second storage means is used is provided. According to another aspect of the present invention, there is provided a document creating apparatus.

In order to achieve the above object, the present invention provides
In a document creation device capable of creating or editing and proofreading a document and executing various application program information, etc., control information for creating or editing and proofing a document, document information created or edited and proofreading, and various controls different from the information A plurality of memory means having a self-refresh function for storing the information of the above and the application program information, and means for controlling the refresh mode for each of these memory means, and for the memory means not accessed. Is in a self-refresh mode.

In order to achieve the above object, the present invention provides
A first memory for storing control information for creating or editing and proofreading a document and document information created or edited and proofed; a second memory for storing information such as various controls different from the above information; And a power supply means for supplying a predetermined power to the memory and the second memory,
When the second memory is not used, the power supply to the memory is controlled from the power supply means to the second memory.

Further, in order to achieve the above object, the present invention further provides control information for creating or editing and proofreading a document for a plurality of memories having a self-refresh function, document information created or edited and proofed, and the information. Different from the above, information such as various controls and application program information are stored, the refresh mode is controlled for each of the memories, and the self-refresh mode is set for the memories that are not accessed. The method for controlling the power supply to the memory is as follows.

[0011]

In the present invention, for the memory that is not used,
The power supply is controlled to be stopped. Therefore, power consumption can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the schematic arrangement of the document creating apparatus according to this embodiment. That is, the document creation apparatus includes a central control processing unit 10 that performs various controls of this system, and a power supply unit 2 that supplies various drive powers in this system.
0, a memory 30 including a plurality of DRAMs, a power supply control unit 40 that controls power supply from the power supply unit 20 to the memory 30 according to an instruction from the central control processing unit 10, an input device, a display device, and a printer. It comprises a device, a floppy disk drive (FDD) as an external storage device, a communication device (neither is shown), and the like.

The central control processing unit 10 includes a first DRAM 3
2 and the second DRAM 34, the third DRAM 36 and the memory 3 including other ROM and RAM not shown.
By the predetermined program information stored in the 0 program area, various controls of the entire system and various commands based on the input instruction information are executed. Further, the central control processing unit 10
Has a kana-kanji conversion processing function. That is, using the work area of the memory 30, the input character string information from the input device (not shown) is associated with the reading information and the conversion word information stored in the dictionary area of the memory 30 according to a predetermined rule based on predetermined instruction information. It has a function of performing kana-kanji conversion control processing by referring to the attached dictionary information and outputting the conversion result to a display device (not shown) by referring to the character pattern area of the internal memory 30 in which font data is stored. .
In addition, the central control processing unit 10 uses the predetermined information as shown in FIG.
It is configured to control the control shown in.

The input device (not shown) controls the reception of input information and sends it to various areas of the central control processing unit 10 and the memory 30, and a large number of units for outputting various input information to this input control unit. And a keyboard provided with the input keys. Here, on the keyboard, a large number of data keys for inputting data such as character string information, and [kana-kanji conversion] for inputting instruction information for converting the input character string information into sentence information containing kanji [Selection / execution] key for instructing selection confirmation of keys and homonyms, and executing / determining various control processes, when there are homonyms and other output candidates, displays the next candidate or the next candidate [Next candidate] key for moving the cursor to, [Memory control] key for instructing control of power supply to the RAM 30, [Cancel] for instructing to cancel or cancel the specified control process. Various other function keys are provided, such as a key, a [Delete] key for deleting the created / edited proofreading information, a cursor key for controlling the movement of the cursor, a [Print] key for instructing printing. (Illustration Not).

On the other hand, various information such as document information subjected to Kana-Kanji conversion control processing under the control of the central control processing unit 10 is displayed on the liquid crystal display device (LC) as a display screen via the display control unit.
It is displayed on the screen of the display device (not shown) by being output to the display unit having D). Here, a guide area for outputting and displaying various guide messages is provided in the lower portion of the display unit.

Various information such as document information which has been subjected to Kana-Kanji conversion control processing under the control of the central control processing unit 10 is stored in the FDD based on predetermined input instruction information from the keyboard of the input device. To be done. Further, based on predetermined input instruction information from the keyboard, the document information stored in the FDD is read into the document area of the memory 30, the graphic information is read into the graphic area, and other various information is read into the predetermined area. It is configured to be used for various work such as editing and proofing.

Further, various information such as document information subjected to Kana-Kanji conversion control processing under the control of the central control processing unit 10 is
Printing is performed by the printer unit, that is, the printer unit that constitutes the printer device via the printer control unit that constitutes the printer device.

Further, if desired, the above-mentioned various types of information can be communicated with other document creation devices or the like by a communication device (not shown) via a telephone line or the like based on predetermined input instruction information from a keyboard. ing.

By the way, the first DRAM 32 is for reading only the necessary program information from the FDD and storing it when necessary. That is, for example, as the application program information, only the communication program information is stored so that the document creating apparatuses can communicate with each other. Then, the first power supply control unit 42 constituting the power supply unit 40 controls the power supply from the power supply unit 20 to the first DRAM 32 based on the instruction information from the central control processing unit 10. is there. That is, if the system is in the document creation mode or the print mode, the first DRAM 32 is not accessed, so this DRA
No power is supplied to M32. On the other hand, since it is accessed when an application program such as a communication mode is executed, power is supplied to the first DRAM 32.

The second DRAM 34 is for storing temporary data such as print data necessary for printing and received data for communication. Then, the power supply unit 40
The second power supply control unit 44 constituting the above controls the power supply from the power supply unit 20 to the second DRAM 34 based on the instruction information from the central control processing unit 10. That is, if the system is in the document creation mode, the second DRAM 34 is not accessed, so this DRA
No power is supplied to M34. On the other hand, when the application program is executed in the print mode or the communication mode, it is accessed, so that the power is supplied to the second DRAM 34.

The third DRAM 36 is for storing various control information for creating or editing and proofreading a document, and necessary information such as document information created or edited and proofreading. Since the third DRAM 36 is constantly accessed, it is configured to receive the required drive power from the power supply unit 40 without the power supply control unit 40.

The operation of the above structure will be described below with reference to the drawings. When the operator sets the system to the document creation mode to create a document (Y in step S2 in FIG. 2).
Power supply unit 40 for the third DRAM 36.
Then, the necessary drive power is supplied (step S4 in FIG. 2), but the power supply to the first and second DRAMs 32 and 34 is stopped (step S6 in FIG. 2). In this way, the system is set and the document creation processing is performed (step S8 in FIG. 2).

When the operator presses the [Print] key on the keyboard to put the system in the print mode (N in step S2 in FIG. 2 and Y in S10), the third DRAM 36 is required by the power supply unit 40. The drive power is supplied (step S12 in FIG. 2), and the second DRAM 3
The necessary driving power is also supplied to No. 4 (step S14 in FIG. 2). On the other hand, the power supply to the first DRAM 32 is stopped (step S16 in FIG. 2). In this way, the system is set and the printing process is performed (step S18 in FIG. 2). When the predetermined printing process is completed, the power supply to the first DRAM 36 is continued, but the power supply to the first and second DRAMs 32 and 34 is stopped (step S20 in FIG. 2). ).

When the operator gives an instruction to execute the communication function from the keyboard and puts the system into the communication mode (N in step S2, N in step S10, Y in step S22), all of the first, second and third steps are performed. Electric power is supplied to the DRAMs 32, 34, 36 (step S24 in FIG. 2). In this way, the system is set and communication processing is performed (step S26 in FIG. 2). When the predetermined communication process is completed, the power supply to the first DRAM 36 is continued, but the power supply to the first and second DRAMs 32 and 34 is stopped (step S20 in FIG. 2). ).

According to the above-described embodiment, since the power is supplied only to the DRAM necessary for executing the predetermined function, the power consumption can be reduced and the economical document producing apparatus can be realized. You can

In particular, since the DRAM conventionally used for holding data has a larger power consumption than the SRAM etc., the shortening of the battery life is remarkable in the document preparation apparatus which can be driven by the built-in battery. It tended to be. However, according to the present embodiment, such a thing can be completely eliminated.

Further, since the central control processing unit automatically controls the power supply to the DRAM, it does not force the operator to do any troublesome operation and is excellent in usability.
It is very useful.

The present invention is not limited to the above embodiment, and it goes without saying that the present invention may be constructed as shown in another embodiment in FIG. That is, FIG. 3 is a block diagram showing a schematic structure of a main part, and basically the same parts as those in the above embodiment are designated by the same reference numerals and described below.

Here, the first DR constituting the memory 30
AM 32, second DRAM 34, and third DRAM
The information stored in each of the 36 is the same information as in the above embodiment. However, the first, second, and third DRAMs 32, 34, 3
6 has a self-refresh function.

The refresh control unit 50 controls the refresh mode of the memory 30 according to an instruction from the central control processing unit 10, that is, the first refresh control unit 52 constituting the refresh control unit 50 refreshes the first DRAM 32. The mode is controlled, and the refresh controller 50
The second refresh control unit 54 constituting the
The refresh mode of the AM 34 is controlled, and the third refresh control unit 56 constituting the refresh control unit 50 is configured to control the refresh mode of the third DRAM 36.

In the case of such a configuration, the consumption of power is reduced by setting the DRAMs other than the required ones in the self-refresh mode, rather than controlling the supply of power to the DRAMs other than the required ones as in the above embodiment. The electric power can be reduced.

[0032]

As described above, according to the present invention, the power supply to the unused memory is controlled so that the memory function can be improved and the power consumption can be reduced, which is economical. Is also excellent.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a document creation device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation according to the embodiment.

FIG. 3 is a block diagram showing a schematic configuration of a main part according to another embodiment.

[Explanation of symbols]

10 ... Central control processing unit, 20 ... Power supply unit, 30 ... Memory, 32 ... First DRAM, 34 ... Second DRAM, 3
6 ... 3rd DRAM, 40 ... Power supply control part, 42 ... 1st power supply control part, 44 ... 2nd power supply control part, 5
0 ... Refresh control unit, 52 ... First refresh control unit, 54 ... Second refresh control unit, 56 ... Third refresh control unit.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location 7315-5L G06F 15/20 580 Z

Claims (4)

[Claims] 1. A first storage unit for storing control information for creating or editing and proofreading a document and document information created or edited and proofed, and a second storage unit for storing information such as various controls different from the above information. In a document creating apparatus comprising storage means and power supply means for supplying predetermined power to the first storage means and the second storage means, whether or not the second storage means is used A document creating apparatus, characterized in that it is provided with a means for judging, and power supply from the power supply means to the second storage means is controlled based on information from this means. 2. A document creating apparatus capable of creating or editing and proofreading a document, and executing various application program information and the like, comprising: control information for creating or editing and proofing a document, and document information created or edited and proofed, Access is provided by providing a plurality of memory means having a self-refresh function for storing various control information different from the information and application program information, and means for controlling the refresh mode for each of these memory means. A document creating apparatus, characterized in that a self-refresh mode is set for the non-existing memory means. 3. A first memory for storing control information for creating or editing and proofing a document, and document information created or edited and proofed, and a second memory for storing information such as various controls different from the above information. And a power supply means for supplying a predetermined amount of power to the first memory and the second memory, wherein when the second memory is not used, the second power is supplied from the power supply means. A method for controlling power supply to a memory, characterized in that power supply to the memory is controlled. 4. Control information for creating or editing and proofing a document for a plurality of memories having a self-refresh function, document information created or edited and proofed, and information and applications for various controls different from the information. A method for controlling power supply to a memory, characterized in that program information is stored, a refresh mode is controlled for each of the memories, and a self-refresh mode is set for the memories not accessed.