JPH07105885B2 - Facsimile receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a facsimile receiving apparatus, and more particularly to a facsimile receiving apparatus including a memory for storing received image data and a recording device for recording / reproducing an image. is there.

[Prior Art] Many conventional facsimile receivers use roll paper instead of cut paper as recording paper.

Since there was no memory having enough memory to store one page or more of image information, if a receiver jams the recording paper during reception, such a device immediately interrupts reception but jams. The page could not be recorded or played on the receiving side.

Therefore, in order to prevent such inconvenience, a facsimile receiver having a large capacity memory has been developed in order to increase pixel density, improve image quality such as halftone expression, and improve transmission speed.

This large-capacity memory is used not only for storing image information, but also for matching the data speed received via the line, the processing capacity of the decoder, the output data of the decoder, and the processing speed of the printer data. It is also a means.

In addition, there is one using an electrophotographic recording device using a cut sheet as a recording device for improving image quality.

However, even if a large memory is provided so that image reception can be continued, the number of pages to be recorded after clearing the recording paper jam has not been known. Therefore, if the number of recording sheets set in the recording unit when the operator eliminates the recording sheet jam is smaller than the number of pages of the image data stored in the memory, the operator eliminates the recording sheet jam. However, there is a drawback that the recording of the image data is stopped again.

Further, in the past, since the number of pages to be printed after clearing the recording paper jam was unknown, the operator who cleared the recording paper jam estimated the time required from the start of recording the image data recorded in the memory to the end of recording. If it doesn't come
Even if the user wants to leave the scene once if it takes a long time to record, there is a disadvantage that he cannot leave the scene until all the image data stored in the memory have been recorded.

[Purpose] The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and how many recording sheets should be set by an operator when the unrecordable state of the recording means is eliminated. In addition, the operator who has eliminated the unrecordable state of the recording means has an idea of the time required from the start of recording of the image data stored in the memory to the end of recording, and waits until the end of recording or once For the purpose of providing a facsimile receiving apparatus capable of determining whether to leave the area, more specifically, a receiving means for receiving image data, a recording means for recording the image data received by the receiving means, and an unrecordable in the recording means. A detection unit that detects that a state has occurred, and image data that could not be recorded by the recording unit when the recording unit detects a recording-disabled state. Holding means for holding, counting means for counting the number of received pages, count value of the counting means, and the number of unrecorded pages held in the holding means based on the number of pages recorded by the recording means It is an object of the present invention to provide a facsimile receiving apparatus characterized by having a display means for displaying information.

[Reference Example] Next, a reference example showing a technique on which the invention is based will be described before the embodiment of the present invention.

1 to 10 illustrate a reference example, and FIG. 1 shows a block diagram of an apparatus of the reference example.

In FIG. 1, the reference numeral 1 indicates a receiving circuit, which is a well-known interface circuit, and is an MH received from the line.
(Modified Huffman) receives the encoded image signal,
Plays the role of writing to the memory 2.

Writing to the memory 2 is started by detecting an EOL (end of line) signal and stopped by detecting an RTC (return to control) signal. This memory 2 has a capacity of 32 Mbit, for example.

The image handled by this device is A4 size only, and the pixel density is 8pel / m.
Since it is m × 8 pel / mm, the pixel information for one A4 size sheet is about 4 Mbit.
However, since the MH code compression form is stored in the memory 2 as it is, about 10 to 100 pages of page information can be stored.

The signal read from the memory 2 is guided to the decoder 3 and decoded.

The decoder 3 is a known MH decoding circuit, which converts MH-coded image data into pixel signals and outputs the pixel signals.

The decoding operation starts when the decoding start signal from the control unit 5 becomes high level, and the reading of data from the memory is started.

Actually, decoding starts when the EOL signal is detected, and R
When the KC signal is detected, the decoding is stopped, and at the same time, the R stop detection is transmitted to the control unit.

The printer 4 is of an electrostatic recording type, and jam sensors 6 to 8 are provided at three locations inside. The outputs of these jam sensors 6 to 8 are guided to the control unit 5.

The jam sensor 6 jams the recording paper in front of the developing drum 9, the jam sensor 7 jams between the developing drum 9 and the fixing roller 10, and the jam sensor 8 jams the discharge roller 11 portion. Printer 4 to detect
The position where the jam occurs can be detected by the control unit 5.

The control unit 5 is composed of a known control circuit including a microcomputer, ROM, RAM and the like.

The control unit 5 sets a write start address and a read start address for the memory 2, respectively, and specifies a leading address when writing from the receiving circuit 1 to the memory 2 and reading from the memory 2 to the decoder 3. .

Further, the write address of the memory 2 in the state where the writing is stopped in the memory 2 is sensed.

For the decoder 3, the decoding start signal is set to high level to start decoding, and then the RTC from the decoder 3
When the detection signal is generated, the decoding start signal is returned to low level.

A print start signal is sent to the printer 4 to instruct recording start.

FIG. 2 shows how received data is stored in the memory 2.

First, the control unit 5 sets the start address of writing to the memory 2 at address O.

When the receiving circuit 1 detects the EOL signal at the beginning of the first page, it starts writing to the memory 2 from address O, and when detecting the RTC signal, it notifies the control unit 5 and at the same time stops writing the received data.

When the control unit 5 receives the RTC detection signal from the receiving circuit 1, the first
Knowing that the storage of the image information of the page is completed, the write stop address A to the memory 2 at this point is sensed.

Then, the write start address is set to the address A for writing the next page.

At the same time, as shown in FIG. 3, the page number “1” and the write start address O of the first page are recorded in the page accumulation management table in the RAM of the controller 5.

Similarly, as shown in FIGS. 4A to 4D, the second to fourth pages are accumulated in the memory 2.

FIGS. 5A to 5D show the state of writing to the page storage management table.

As a result, as shown in FIG. 3, it is stored in the page storage management table that page 1 is stored at address O of the memory, page 2 at address A, page 3 at address C, and page 4 at address D. It

As described above, the control unit 5 stores the received image information in the memory 2
When at least one page of image data is stored in the memory 2, the read start address is set to the top address of the memory 2 where the page is stored, and the decoder start signal and print start are started. The page is decoded and recorded / reproduced by the signal.

FIG. 6 shows a time chart when the image signals for four pages are received, the recording paper is not jammed in the middle, and the recording output is normally performed.

Further, in FIG. 7, the second page is 3 after the recording output is completed.
The time chart when a jam is detected by the jam sensor at the time of recording the page is shown.

Conventionally, the facsimile receiver interrupts the reception when a jam occurs, but in the present invention, the reception is not interrupted, and the received page is continuously accumulated in the memory 2.

In the example shown in FIG. 7, the reception continues until the fourth page.

However, as shown in FIG. 7, decoding and recording / reproduction of the received page are interrupted, and the jam sensor is continuously monitored until the jam is resolved.

On the other hand, when the jam is resolved, the control unit 5 decodes the information of the third and fourth pages for which the recording has been interrupted and records the information on the third page based on the storage management table shown in FIG. The read start address of the fourth page is designated at the address B, the decoding start and print start signals are output, and the read start address of the fourth page is similarly designated at the address C after recording and reproducing the third page. , Record the 4th page,
Play and finish the operation.

8 to 10 show flowcharts for explaining the control operation.

FIG. 8 illustrates the entire control operation, and step S1
In step S2, the write start address is set to address O, and in step S2, the reception start page is set to X, and this is set as the first
Set it on the page.

Then, in step S3, the recording start page is set to Y, and this is set to one page.

Then, in steps S4 to S6, the working area (variable storage area) in the RAM in the control unit 5 is initialized, and steps S7 and S8, which are record control and print control described later, are repeated, and all control operations are completed.

On the other hand, FIG. 9 shows the record control step,
In step T1, it is determined whether the page is waiting for page reception or the page end is waiting. If the page end is waiting, in step T2 the receiving circuit detects the RTC signal, step T3.
In the storage management table, the page number X and the storage start address are set, the address is incremented by 1 in step T4, the write stop address is sensed in step T5, and the write stop address is set in step T6.
In step T7, the page is waited for, and the process returns to the original state.

On the other hand, in the case of waiting for page reception, when the receiving circuit detects the EOL signal in step T8, it is set in the state of waiting for page end in step T9 and returns to the original state.

On the other hand, FIG. 10 illustrates a specific method of print control, and it is determined in step U1 whether the print is awaited for printing, the print is awaited, or neither.

When waiting for the end of printing, the occurrence of jam is confirmed in step U2.

If a jam occurs, the print start signal goes low in step U3, the decode start signal goes low in step U4, the page to be printed is set to the second page in step U5, and the process returns to the original state.

On the other hand, if no jam occurs in step U2, the process proceeds to step U6, where it is determined whether or not there is a signal in which the RTC signal is detected from the decoder.
Proceeding to U7, the print start signal is set to low level, the decoding start signal is set to low level in step U8, and the Y page in the RAM of the control unit 5 is incremented by 1 in step U9.
Then, in step U10, the print page is set to 0 and the process returns to the original.

On the other hand, if the printing is waited in step U1, the process proceeds to step U11 and it is determined whether or not the Y page is set in the storage management table. If it is not set, the process returns to the original state, and if it is set, the process proceeds to step U12 to set the accumulation start address of the Y page to the read start address, the print start signal is set to the high level in step U13, and the step U14 is executed. The decoding start signal is set to the high level, the print page is set to one page in step U15, and the process returns to the original.

Steps U1 to U1 in cases other than those described above
In step 6, it is determined whether or not the jam has been resolved. If it has not been resolved, the process returns to the original state. If it has been resolved, the print page is set to 0 and the process returns to the original state.

[Examples] Next, examples of the present invention will be described. 11 to 13 are diagrams for explaining the embodiment of the present invention, in which the same parts as those in FIGS. 1 to 10 are designated by the same reference numerals and the description thereof will be omitted.

In the present embodiment, a structure is adopted in which the number of received pages that have not been recorded and output is displayed when a recording paper jam occurs.

In this embodiment, the display means 12 for displaying the "day" character segment composed of LEDs is provided as the display means, and this is connected to the control unit 5.

Of course, other display means may be used.

If such a structure is adopted, after the operator has cleared the jam, it can be judged whether or not all the unrecorded pages can be recorded / reproduced by at least the number of remaining recording sheets, which is extremely convenient for operation. good.

FIG. 12 shows a change in control operation in the case of such a configuration.

The difference between FIG. 12 and FIG. 10 is that step U2 ′ is provided between steps U2 and U3 to display the difference between the page to be printed and the printed page, and step U16 is provided between step U16 and step U17. 'Is provided to clear the remaining page display, and if the jam is not cleared in step U16, step U18
The point is that each step for displaying the remaining pages is provided.

FIG. 13 shows a timing chart including the remaining page display step.

[Effect] As is apparent from the above description, according to the present invention, the number of received pages is counted, and based on the count value and the number of pages recorded by the recording device, the unrecorded data held in the holding device is recorded. Since the information indicating the number of pages is displayed, if the operator sees the display, the number of pages to be recorded after the unrecordable state of the recording means is changed. You can see if you should set one.

Further, according to the present invention, since the number of pages to be recorded after the unrecordable state of the recording means is resolved, the operator who has eliminated the unrecordable state of the recording means records from the start of recording the image data stored in the memory. The time required until the end of recording is estimated, and it is possible to judge whether to wait until the end of recording or to leave the place once, which is extremely advantageous in operation.

[Brief description of drawings]

1 to 10 illustrate a reference example showing a technology on which the embodiments of the present invention are based. FIG. 1 is a block diagram of a control circuit, and FIG. 2 is a received data and an image storage range on a memory. And an explanatory view showing the relationship with the top address of each page,
The figure is an explanatory view of the storage management table, and FIGS. 4 (A) to (D) and FIGS. 5 (A) to (D) are storage states of each page and start address in the memory and writing in the storage management table. FIG. 6 is a timing chart of each signal in a jam-free state, FIG. 7 is a timing chart of each signal when a jam occurs, and FIG. 8 is a flowchart explaining the overall control. FIG. 9 is a flow chart for explaining the record control, FIG. 10 is a flow chart for explaining the print control, and FIGS.
11 is a block diagram of a control circuit, FIG. 12 is a flow chart for explaining print control, and FIG. 13 is a timing chart of each signal. 1 ... Reception circuit, 2 ... Memory 3 ... Decoder, 4 ... Printer 5 ... Control unit, 6-8 ... Jam sensor 9 ... Drum, 10 ... Fixing roller 11 ... Discharging roller, 12 ...... Display means

Claims (1)

[Claims] 1. A receiving means for receiving image data, a recording means for recording the image data received by the receiving means, a detecting means for detecting that an unrecordable state has occurred in the recording means, and the detecting means. Holding means for holding the image data that could not be recorded by the recording means, a counting means for counting the number of received pages, and a count value of the counting means when the recording means detects the unrecordable state of the recording means. And a display unit for displaying information indicating the number of unrecorded pages held in the holding unit based on the number of pages recorded by the recording unit.