JP3124329B2 - Digital MFP - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a copy function unit,
The present invention relates to a digital multi-functional peripheral having a basic control unit that selectively connects and controls an on / off-line function unit, a file function unit, a facsimile function unit, and the like, and is particularly suitable for signals transmitted between the units. The present invention relates to a digital multifunction peripheral that executes processing.

[0002]

2. Description of the Related Art Conventionally, in a multifunction peripheral having a copy function unit, an on / offline function unit, a file function unit, a facsimile function unit, etc., in order to reduce the cost of the apparatus or to promote the miniaturization of the apparatus. Circuit elements that perform the same operation, for example, a data compression / expansion circuit (CEP), avoid redundant installation, and are generally equipped with only one inexpensive data compression / expansion circuit as a standard. The compression / decompression processing of the data signal transmitted between the units is executed at a uniform speed.

Similarly, the processing speed of the signals in the on / off-line function unit is uniform, and no special high-speed processing means is provided. Was processed at the same speed as.

[0004]

However, in the multifunction peripheral as described above, the circuit elements that execute the same operation, for example, the data compression / expansion circuit (CEP) are avoided from being installed in duplicate. There is a problem that data compression / decompression processing corresponding to each signal output according to the functions of a plurality of units cannot be executed. For example, in order to perform transmission processing using a pay telephone line, data compression / decompression processing related to the operation of the facsimile function unit requiring high-speed processing is performed at a normal speed.
When sending a large amount of data to a telephone line, there is a problem that a great loss is given to the user.

Also, regarding the signal processing in the on / off-line function unit, no high-speed signal processing means is provided, and the processing speed is made uniform, so that it is impossible to meet the demand for high-speed processing. was there.

The present invention has been made in view of the above, and has an object to selectively execute high-speed or normal data compression / decompression processing corresponding to each signal output according to the functions of a plurality of units. As a first object.

In the on / off-line function unit, a high-speed signal processing means is provided to selectively execute high-speed processing for a signal requiring high-speed processing according to the situation. The purpose of.

[0008]

According to the present invention, a copy function unit, an on / off line function unit, a file function unit, a facsimile function unit , and each function unit are selectively connected to achieve the above object. Control the operation and at least the first data compression / decompression.
A digital multifunction peripheral provided with a basic control unit having a length control means, which is faster than the first data compression / decompression means.
A second data compression / expansion means capable of performing
The basic control unit exchanges data between functional units.
If the signal to be processed requires high-speed processing, the second
Select data compression / decompression means and perform signal processing
It is intended to provide a digital multifunction device to be controlled .

Further, the second data compression / decompression means includes:
Desirably , it is provided in the file function unit .

Also, a copy function unit, an on / off line
Function unit, file function unit, facsimile
Select the function unit and each function unit selectively.
Digital composite with basic control unit
Machine that performs high-speed vector font processing.
On / offline the font font accelerator
The basic control unit is provided in a functional unit,
Signals exchanged between functional units require high-speed processing
In this case, using the vector font accelerator
Providing a digital multifunction device that controls signal processing
Is what you do.

[0011]

[0012]

The digital multifunction peripheral according to the present invention has a copy function unit.
Unit, on / offline function module, file function
Unit, facsimile function unit and each function unit
To control operation by selectively connecting
And a basic control unit having first data compression / decompression means.
In the digital multifunction peripheral provided with the
A second method capable of performing compression / decompression processing faster than the compression / decompression means
Data compression / expansion means, wherein the basic control unit comprises:
Signals sent and received between functional units require high-speed processing
The second data compression / expansion means,
Control to perform signal processing.

Further, the second data compression / decompression means includes:
It is provided in the file function unit.

A copy function unit, an on / off line
Function unit, file function unit, facsimile
Select the function unit and each function unit selectively.
Digital composite with basic control unit
Machine that performs high-speed vector font processing.
On / offline the font font accelerator
The basic control unit is provided in a functional unit,
Signals exchanged between functional units require high-speed processing
In this case, using the vector font accelerator
Control to perform signal processing.

[0015]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a specific configuration of a digital multifunction peripheral according to the present invention. However, since the copy function unit 200 and the first operation unit 300 are the same as those in the related art, the details are omitted, and the blocks are described as blocks 200 and 300.

The basic control unit 400 includes a CPU 401
And R storing a basic control program in the basic control.
OM 402, RAM 403 storing data and the like used for basic control, and CGROM for generating 16-dot Chinese characters
404 and a system timer 4 for monitoring CPU events
UART (communication unit) 4 used for communication with the MFP 05, the interrupt controller 406, and the copy function unit 200.
07, 90 degrees, 180 used in extended copy function etc.
Processor 4 which is an LSI for image rotation of 270 degrees and 270 degrees
08 and the DMA controller 409 on the system bus side.
And CEP4 which is a general LSI for image compression / decompression
10 and bus arbiter 4 which is an image bus arbitration circuit
11, a two-way Centronics I / F 412 for communication with the second operation unit 500, and a digital image I / F 413 which is an input / output interface for image data.
, A page buffer (memory) 414 serving as an image storage memory, and a DMA controller 4 on the image bus side.
15 and a RAM communication port 416 for debugging. A in the figure indicates an image bus, and B indicates a system bus.

The second operation unit 500 controls the above-mentioned second operation display unit 102, and has a CPU
501, a touch sensor control unit for controlling the touch sensor of the touch panel 102a, an LCD display control unit for controlling the liquid crystal display unit of the touch panel 102a, and a bidirectional Centonics I / F for communication with the basic control unit 400. Have.

The facsimile function unit 600 has a ROM 601 for facsimile control, a RAM 602 backed up by a battery, a CPU 603 for facsimile communication control, and temporarily stores original data to be transmitted by facsimile before transmitting (so-called memory transmission). Temporary storage RAM (SAF memory) 604 used when performing
And a CCU 605 as a public line connection controller. In other words, the facsimile function unit 6
00 incorporates only communication-related elements necessary for facsimile transmission and reception. The image processing (for example, image compression / decompression) part performed by the facsimile apparatus is incorporated in the basic control unit 400 as a common part of each function. Have been. Therefore, by connecting the facsimile function unit 600 and the basic control unit 400 via the system bus B, a control unit required for the facsimile function is configured.

The on / offline function unit 700 includes:
Floppy disk drive 1 for offline input (here, 3.5 inch floppy disk)
Disk controller 701 for controlling the 06
An online printer I / F 702 for performing online input via the Centronics RS-232C connector 109; and a CGROM transfer controller 7
03 and control ROM 704 for printer control
, A printer control RAM 705, and a font card deck 1 for an outline font card
A vector font high-speed processing accelerator 706 used when inputting a vector font from the 08a
A CGROM 707 for generating 56-dot Chinese characters and an optional additional memory 708 for controlling an online printer are provided. In other words, in the on / offline function unit 700, only the elements unique to the on / offline printer function are incorporated, and for the other necessary parts, the basic control unit 4 is used as a common part of each function.
00. Therefore, by connecting the on / off line function unit 700 and the basic control unit 400 via the image bus A and the system bus B, a control unit required for the on / off line printer function is configured.

As one of the on / off-line printer functions, there is an on-line output by a LAN (local area network), and similarly, it can be added as an optional function. The online function unit 700a for LAN includes a dual port memory 709,
LAN control CPU 710 and LAN control LS
I711.

The file function unit 800 includes a file control RAM 801, a file control ROM 802, a SCSI controller 803, a high-performance image compression / decompression LSI CEP 804,
Image enlargement / reduction LSI (line data converter) 8
05. The file function unit 800
, An optical disk drive (optical disk deck) 107 is additionally provided as a standard equipment via a SCSI controller 803.
And a plurality of optical disk drives 112 and the like can be optionally connected via a connector 111. In other words, only elements unique to the file function are incorporated in the file function unit 800, and other necessary parts are incorporated in the basic control unit 400 as common parts of the respective functions. Therefore, by connecting the file function unit 800 and the basic control unit 400 via the image bus A and the system bus B, a control unit necessary for the file function is configured.

In the above arrangement, the image data signal input / output from / to the various function units is determined by the CPU 401 in the basic control unit 400 where the destination and processing contents of the image data signal are determined. Path selection is performed. For example, a facsimile function unit 60 for transmitting and receiving image data using a telephone line
0, it is necessary to quickly execute the image compression / decompression processing on the image data signal.
The processing is executed in P804. In addition, especially for image data signals for which high-speed image compression / decompression processing is not required, the processing is executed by a general CEP 410 provided in the basic control unit 400.

Further, if high-speed processing is required for the image data signal, the CPU 40 of the basic control unit 400
1 executes high-speed processing by the vector font accelerator 706 provided in the on / off-line function unit 700, and realizes high-speed signal processing as a whole.

[0024]

As described above, the digital multifunction peripheral according to the present invention operates by selectively connecting the copy function unit, the on / offline function unit, the file function unit, the facsimile function unit , and each function unit. Control and at least a first data pressure
In a digital multi-functional peripheral provided with a basic control unit having compression / expansion means, the digital multifunction peripheral may be more than the first data compression / extension means.
Second data compression / expansion means capable of high-speed compression / expansion processing
The basic control unit is provided between each functional unit.
When the signals to be transmitted and received require high-speed processing,
Select the data compression / expansion means 2 and perform signal processing
Control. Further, the second data compression / expansion means
Indicates that it is provided in the file function unit.
Sign. Therefore, high-speed or normal data compression / decompression processing corresponding to each signal output according to the functions of the plurality of units can be selectively executed. Also, copy function
Unit, on / offline function unit, file machine
Function unit, facsimile function unit and each function unit
Basic control unit that selectively connects
High speed vector file
Vector font accelerator for font processing
Is installed in the on / offline function unit,
This control unit uses signals transmitted and received between each functional unit.
If you need high-speed processing, the vector font
Control to perform signal processing using accelerator
You. Therefore , high-speed processing can be selectively executed for a signal requiring high-speed processing according to the situation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a specific configuration of a digital multifunction peripheral according to the present invention.

[Explanation of symbols]

400 Basic control unit 401 CPU 410 CEP 600 Facsimile function unit 700 On / offline function unit 706 Vector font accelerator 800 File function unit 804 High performance C
EP

Claims (3)

(57) [Claims] 1. A copy function unit, an on / off line function unit, a file function unit, a facsimile function unit , and selectively controlling each of the function units for operation control , and at least a first data compression / decompression.
A digital multi-function peripheral provided with a basic control unit having means for compressing and expanding data at a higher speed than said first data compressing and expanding means.
And a second data compression / decompression means capable of
The control unit transmits signals transmitted and received between each functional unit.
When high-speed processing is required, the second data compression / decompression
A digital multi-function peripheral characterized by performing control so that signal processing is performed by selecting a long means . 2. The data compression / decompression means according to claim 2 , wherein:
Characterized in that it is provided in the file function unit.
The digital multifunction peripheral according to claim 1. 3. A copy function unit, on / offline
Function unit, file function unit, facsimile machine
Function units and the function units
Digital multifunction machine with a basic control unit
, A vector phone that performs high-speed vector font processing
On / off-line function unit
The basic control unit is provided between each functional unit.
If the signal sent and received at
Use the vector font accelerator for signal processing.
A digital multifunction device characterized by controlling in this way.