JPH0797805B2 - Equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a facsimile apparatus.

[Prior Art] A conventional Facsimile device can perform proxy reception by storing received image information in a memory or the like when the recording paper runs out. When performing this proxy reception, by dividing the remaining receivable memory capacity by the standard one page capacity,
The remaining receivable number is obtained, the receivable number is also notified to the transmitter, and the remaining receivable number is displayed on both the transmitter and the receiver. Then, each time the transmission of one page is completed, the remaining receivable number displayed is subtracted one by one and the number is displayed.

[Problems to be Solved by the Invention] When performing the proxy reception and determining the remaining receivable number during the transmission operation, the remaining receivable memory capacity is divided by the standard one-page capacity as in the above-mentioned conventional apparatus. If the remaining receivable number is calculated, the remaining receivable number cannot be accurately displayed when the information size to be transmitted, the transmission mode, the encoding method, etc. are different.

[Means for Solving the Problem] According to the present invention, there are provided first transmitting means for transmitting image data, first receiving means for receiving the number of receivable pages transmitted from the receiving side facsimile apparatus, and first receiving means. A transmission function including a display unit that displays the number of pages that the reception side facsimile device can receive, a second reception unit that receives image data, and a document size of image data transmitted from the transmission side facsimile device. Detection means for detecting the resolution and encoding method, storage means for storing the image data received by the second reception means, detection means for detecting the remaining capacity of the storage capacity of the storage means, and document detected by the detection means. The calculation means for calculating the number of receivable storage pages based on the size, the resolution, the encoding method, and the remaining amount detected by the detection means, and the number of receivable pages calculated by the calculation means And a receiving-side function having a second transmitting unit for transmitting to the X-millimeter device.

[Operation] According to the present invention, the number of pages that can be received by the receiving side is calculated based on the remaining memory capacity of the receiving side, the document size, the resolution, and the encoding method, and the calculated number of receivable pages is calculated by the transmitting side. Since it is displayed by, the number of receivable pages can be accurately displayed even if the document size, resolution, and encoding method are changed.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention.

An NCU (network control unit) 2 is a control unit that connects to a terminal of a telephone line 2a to control connection of a telephone switching network, switches to a data communication path, and holds a loop. It is a device for switching the telephone line 2a to the telephone 4 side or the facsimile device side according to the signal level of. In a normal state, the telephone line 2a is connected to the telephone 4 side.

The hybrid circuit 6 is a circuit that separates a transmission system signal and a reception system signal. Modulator 8 is a known CCITT Recommendation V
It is a circuit that performs modulation based on 21. The reading circuit 10 is
This is a circuit for sequentially reading image signals for one line in the main scanning direction of a transmission document and creating a signal string representing binary black and white.
It is composed of an image pickup device such as a CCD (charge coupled device) and an optical system. The encoding circuit 12 is a circuit that encodes binarized data. This encoding includes MH (Modified Huffman) encoding and MR (Modified Read) encoding. The modulator 14 is a circuit that performs modulation based on known CCITT recommendations V27ter (differential phase modulation) and V29 (quadrature modulation).

In addition, an adder circuit 16, a demodulator 18 that performs demodulation based on the well-known CCITT recommendation V21, and a well-known CCITT recommendation V27ter
(Differential phase modulation) V29 (quadrature modulation) based demodulator 20 for demodulation and memory circuit 22 for storing demodulated data
A decoding circuit 24 and a recording circuit 26 are provided.

For the input / output of the memory circuit 22, the position of the memory space is designated according to the address pointer from the control circuit 38. The decoding circuit 24 is a circuit for decoding the demodulated data from the demodulator 20 or the data from the memory circuit 22, and when the signal from the control circuit 38 to the decoding circuit 24 is "0", the demodulator 20 The signal from is decoded and the above signal is "1".
If so, the data from the memory circuit 22 is decoded.
This decryption is MH (Modified Huffman) decryption or MR (Modified Read) decryption.

The recording circuit 26 is a circuit for sequentially recording the decoded data line by line. A black band is provided as a near end mark on the back side of the recording paper. Is 50 cm, for example. Then, the recording circuit 26 outputs a signal of "1" when detecting the near-end mark and outputs a signal of "0" when not detecting the near-end mark.

Further, a lamp 28 for indicating the recording sheet existence state, a circuit 30 for indicating the remaining transmittable number, and a writing for recording the address of a pointer used when writing the demodulated data from the demodulator 20 into the memory circuit 22. A pointer address storage circuit 32 is provided.

The write pointer address storage circuit 32 writes / reads the write pointer address when receiving a write pulse / read pulse from the control circuit 38.
The read pointer address storage circuit 34 is a circuit for storing the address of the read pointer used when outputting the data stored in the memory circuit 22, and when the write pulse / read pulse is received from the control circuit 38, it is read. The pointer address is written / read.

The memory control flag 36 is a flag that is set when the write pointer returns from the final address of the memory circuit 22 to the start address and is reset when the read pointer returns from the final address of the memory circuit 22 to the start address. is there. When receiving the inversion pulse from the control circuit 38, the memory control flag 36 inverts the content of the flag.

Further, the control circuit 38 is an example of means for always recognizing the remaining amount of the memory on the receiver side and displaying the remaining receivable number on the transceiver according to the transmission condition. The above transmission conditions are the size of information being transmitted, the encoding method, and the linear density.

Next, the operation of the above embodiment will be described.

The facsimile receiver in the above embodiment records on the recording paper until the near end mark is detected,
When the near end mark is detected at the start of receiving one page, the near end mark is stored in the memory circuit 22. When the near-end mark is detected while receiving one page, recording is performed on the recording paper until the end of the page.

Then, in the facsimile receiver, the memory capacity is, for example, 10 Mbytes, the transmitted document size is A4 and B5, the encoding method is MH encoding and MR encoding, and the linear density is the standard mode (sub-scanning). (Direction linear density is 3.85 l / mm)
And fine mode (line density in the sub-scanning direction is 7.7 l / mm)
think of. The linear density in the main scanning direction is 8 l / mm.

Then, the size of the original to be transmitted is A4, the MH encoding method, and the amount of information in the standard encoding when transmitting in the standard mode is, for example, 0.2 MB. For example, the size of the transmitted original is A4, the MH encoding method, and the standard encoded information amount when transmitting in the fine mode is 0.4 M bytes.

FIG. 4 shows an example of the standard encoded transmission information amount according to other combinations of the document size, the encoding method, and the mode.

The facsimile receiver in the above-described embodiment always recognizes the remaining receivable capacity, and is a standard one when the information size, the encoding method, and the linear density (standard mode, fine mode, etc.) currently being transmitted are encoded. The remaining receivable capacity is divided by the information amount to obtain the receivable number. And 1
Every time page transmission is completed, the transmitter is notified of the remaining receivable number by MCF (message confirmation signal) and CFR (reception preparation confirmation signal). By displaying this number on the display for both the transmitter and the receiver, the operator can accurately recognize the remaining transmittable number.

FIG. 2 is a flow chart showing the operation of the control circuit 38 in the facsimile receiver in the above embodiment.

First, the control circuit 38 sends a signal of "0" level to the NCU2, turns off CML, and if transmission is selected (S42, S4
4), the control circuit 38 sends a signal of "1" to the NCU2 C
Turn on ML (S46). The pre-procedure is carried out (S48), it is judged whether the receiver has the same function as the present invention (S50),
If it does not have the same function, normal image transmission is performed (S5
2).

When the receiver has the same function, the pre-procedure is performed (S54), and if the CFR has a FIF (facsimile information field), the remaining transmittable number is displayed on the display circuit 30 (S5).
6, S58). If there is no FIF in CFR, image transmission is performed and post-procedures are performed (S60, S62).

If the MCF has a FIF (S64), the remaining transferable number is displayed on the display circuit 30 (S66), and the above operation (S42 to S66)
(S68).

FIG. 3 is a flow chart showing the operation of the control circuit 38 in the facsimile receiver in the above embodiment.

The control circuit 38 sends a signal level "0" to the NCU2,
If CML is turned off and reception is selected (S72, S74),
The control circuit 38 sends a signal of "1" to the NCU2 to turn on the CML and perform the pre-procedure (S76, S78). If the transmitter does not have the same function as the present invention, normal transmission is performed (S80, S82).

If the transmitter has the same function, perform the pre-procedure (S8
4) The remaining receivable number is calculated (S86), and the remaining receivable number is displayed on the display circuit 30 (S88). That is, the reception memory remaining amount is divided by the memory capacity when one page is encoded in the current transmission mode, and as a result, the remaining receivable number is obtained. Document size (A4, B
4), encoding method (MH, MR) and sub-scanning mode (standard, fine).

When obtaining the remaining reception memory capacity, it is obtained based on the address of the write pointer, the address of the read pointer, and the memory control flag 36. Then, perform the pre-procedure, CF
The remaining transferable number is set in the R FIF (S90), the image is transmitted, and the post-procedure is performed (S92, S94). And S86
The remaining receivable number is calculated in the same manner as in (S96), the remaining transmissible number is displayed (S98), and the remaining transmissible number is set in FIF (S100) as in S90. It is determined whether it is the last page (S102), and if it is the last page, the process returns to S72. On the other hand, MPS (multi-page signal)
If it is not the last page and there is no mode change as in the case of receiving "etc.", the process returns to S92. If the EOM (message end signal) or the like is received and there is a mode change instead of the last page, the process returns to S84.

In the pre-procedure, the facsimile transmitter receives information on the remaining receivable capacity from the facsimile receiver, and the remaining receivable number is transmitted by facsimile based on the information size, encoding method, linear density, etc. currently being transmitted. The machine may determine and display the remaining receivable number.

Further, when receiving a plurality of pages, for example, by counting the information amount of the encoded data received on the first sheet and dividing the remaining transmittable capacity by the information amount of the encoded data received on the first sheet, The remaining number of transmissions may be obtained. Similarly, when receiving a plurality of pages, the information amount of the encoded data received on the previous page and the average of the encoded data information amounts received so far are counted, and the remaining transmittable number is calculated based on these values. You may do it. This is because, when transmitting a plurality of pages of a document at one time, the coded information amounts of the documents are often similar.

[Effects of the Invention] According to the present invention, the reception is performed based on the original size, the resolution, the encoding method of the image data received from the transmitting side facsimile apparatus, and the remaining capacity of the storage capacity of the storage unit that stores the image data. Since the number of available pages is calculated by the receiving facsimile machine, the number of receivable pages is transmitted from the receiving facsimile machine to the transmitting facsimile machine, and the number of receivable pages of the receiving facsimile machine is displayed on the transmitting facsimile machine. The number of recordable pages can be displayed more accurately than the one that displays the number of recordable pages calculated based on the standard data amount of one page without considering the document size, resolution and encoding method. By seeing the display, the operator on the sending side can appropriately prevent the overflow of the storage means on the receiving side by appropriately adjusting the number of documents. Therefore, there is an effect that it is possible to surely avoid the missing of the data of the document image due to the overflow of the receiving side storage means.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a flow chart showing the operation of the control circuit 38 in the facsimile transmitter in the above embodiment. FIG. 3 is a flow chart showing the operation of the control circuit 38 in the facsimile receiver in the above embodiment. FIG. 4 is a diagram showing an example of the amount of transmission information for different transmission conditions in the above embodiment. 22 …… Memory circuit, 30 …… Remaining transferable number display circuit,
32 ... Write pointer address storage circuit, 34 ... Read pointer address storage circuit, 38 ... Control circuit.

Claims (1)

[Claims] 1. A facsimile apparatus having a transmitting function and a receiving function, wherein the transmitting function includes first transmitting means for transmitting image data; and information on the number of receivable pages transmitted from the receiving side facsimile apparatus. First receiving means; display means for displaying the number of receivable pages received by the receiving side facsimile apparatus by the first receiving means; and the receiving function is second receiving means for receiving image data. A detecting means for detecting a document size, a resolution and an encoding method of the image data transmitted from the transmitting side facsimile apparatus; a storing means for storing the image data received by the second receiving means; Detection means for detecting the remaining capacity of the storage capacity; original size, resolution, and encoding method detected by the detection means, and detection by the detection means Calculating means for calculating the number of receivable pages based on the remaining amount; second transmitting means for transmitting information on the number of receivable pages calculated by the calculating means to the transmitting side facsimile apparatus; A facsimile device characterized by the above.