JPH03220856A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To print out only a required reception document onto recording paper by displaying once a facsimile reception picture onto a television screen of a home use television receiver with a practical resolution. CONSTITUTION:A facsimile signal received from a line passes through a network control circuit 11 and is demodulated into a base band signal by a MODEM 12 and stored in a memory 13. The signal is extracted from the memory 13 and a facsimile signal subject to MH or MH coding is decoded by a decoder 14 and they are stored in a frame memory 15. The data stored in the frame memory 15 is read repetitively at a frame period of a television receiver 30 and displayed on the screen of the television receiver 30. Thus, only a data truly required is printed out.

Description

[Detailed description of the invention] [Industrial application field] INDUSTRIAL APPLICATION This invention is utilized for a facsimile machine.

〔overview〕

The present invention allows a facsimile device to store received facsimile signals so that they can be retrieved later and checked by viewing the received data on a normal television receiver, and to record and print only the truly necessary received data on paper. It was made so that it could be taken out.

[Conventional technology]

Conventional facsimile machines have a configuration in which the sending side converts data such as characters and images into facsimile signals and sends them, the receiving side converts the received facsimile signals, and records and prints the received data on a specified paper. Ta.

[Problem to be Solved by the Invention 2] As described above, conventional facsimile machines usually record and print received data on paper. For this reason, as the use of facsimiles becomes more widespread, a problem is arising in that information that the user does not need is sent from a third party, and the received recording paper is wasted.

In order to solve this problem, it would be a good idea to temporarily store the received data in a memory, display it on the television display tube, and then print it out only when necessary.

However, since the resolution (number of pixels) of a television is significantly inferior to that of a facsimile, even if received facsimile data is displayed directly on a television, it is almost impossible to decipher normal documents, let alone simple pictures. becomes. For special purposes, there were some devices that displayed received data on high-resolution display devices such as personal computers, but none that could be displayed on home television receivers.

The purpose of the present invention is to solve the above-mentioned problems.
To provide a facsimile device which can temporarily store received data in a memory, display and check it especially on a home television receiver, and print out only the really necessary data.

[Means for solving problems]

The present invention provides a facsimile apparatus equipped with facsimile signal transmission/reception means, including a memory circuit for storing received facsimile signals for a plurality of pages, a decoder for reading out and decoding the facsimile signals stored in the memory circuit, and a decoder for reading and decoding the facsimile signals stored in the memory circuit. A frame memory circuit that decodes a facsimile signal for one screen, and a vertical circuit of the frame memory circuit in which the distance from the read start address to the read end address is adapted both vertically and horizontally to the resolution of a home television screen. and a horizontal read address counter, a read start address control circuit that controls the read start addresses in the vertical and horizontal directions of the vertical and horizontal read address counters, and a black and white binary facsimile signal read from the frame memory circuit for television use. The present invention is characterized in that it includes a digital-to-analog conversion circuit for converting into a video first word, and an output terminal for connecting the output of this conversion circuit to a home television.

Further, in the present invention, the number of pixels stored in the frame memory circuit is as follows: main scanning line density: 4/mm x sub-scanning line density: 3.
It is preferable to have a configuration of 85 lines/mm and 1143 lines x 840 lines.

Two functions: The received facsimile signals are stored in a memory circuit for multiple pages, read out one screen at a time, decoded by a decoder, and stored in a frame memory circuit. In this case, the vertical and horizontal read address counters have a main scanning line density of 4 and 7 pixels, for example.
mm, sub-scanning line density 3.85 lines/mm, vertical 1143
Count so that the number is 840 in the X direction. In other words, one page of the facsimile is divided into 15 parts, which is easily realized.

The user specifies data to be displayed on the television receiver using the read start address control circuit.

This designated data is read out from the frame memory circuit, converted into a video signal by a digital-to-analog conversion circuit, and displayed on the screen of a home television receiver.

Therefore, the user can check the received data once on the television screen, and only the truly necessary data can be recorded and printed on paper and retrieved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the main parts of an embodiment of the present invention.

In this embodiment, a facsimile apparatus 1O is provided with a network control circuit U and a modem 12 as means for transmitting and receiving facsimile signals, and a memory 13 for storing a plurality of pages of facsimile signals received from a line, which is a feature of the present invention. , a decoder 14 that reads and decodes facsimile signals stored in this memory 13, a frame memory 15 that stores one screen worth of facsimile signals decoded by this decoder 14, and a frame memory 15 that stores facsimile signals decoded by this decoder 14 for one screen, and Vertical and horizontal read address counter 1 of Frame Memo 'J15 whose distance is adapted both vertically and horizontally to the resolution of a home television screen.
6 and 17, and a read start address control circuit 18 that controls the read start addresses in the vertical and horizontal directions of the vertical and horizontal read address counters 16 and 17,
A digital-to-analog conversion circuit 19 that converts the black-and-white binary facsimile signal read from the frame memo 'J15 into a video signal for television, and a television that connects the output of this digital-to-analog conversion circuit 19 to a home television receiver. The television output terminal 20 is connected to a home television receiver 30.

Next, the operation of this embodiment will be explained.

The facsimile signal received from the line is sent to the network control circuit ↓l
After being demodulated into a baseband signal by the modem 12, it is stored in the memory 13. The memory 13 has a capacity capable of storing a sufficient number of pages of received documents for normal use. The accumulated received documents are taken out from the memo 1J13 by the user's operation, and stored in the frame memory 15 after decoding the facsimile signal encoded in MH or MR by the decoder 14. The frame memory 15 stores I-page documents.

The data stored in the frame memory 15 is repeatedly read out at the frame period of the television receiver 30 and continues to be displayed on the screen of the television receiver 30. The range of data read from the frame memory 15 is determined as follows, and will be explained with reference to FIG.

FIG. 2 shows the facsimile reception screen (here, one page of A4 size) stored in the frame memory 15, the vertical read address counter 16, the horizontal read address counter 17, their respective read start addresses, and read end addresses. 3 is an explanatory diagram showing addresses and the relationship between these addresses and the ranges that are actually read and displayed on the screen of the television receiver 30. FIG.

The aspect ratio of the screen of the television receiver 30 is 3:4, and the television receiver 30 has 225 pixels vertically.
Display at 300 pixels horizontally. In an NTSC television receiver, the number of horizontal scanning lines in the effective screen is usually 45.
Since there are about 0 lines, ink-race scanning is not performed. Alternatively, interlaced scanning may be performed), but in this case, the same horizontal scanning line on the frame memory will be displayed again during interlaced scanning.

The number of pixels of Fakunmi'Jlif's A4 size l page is 2286 vertically x 1680 horizontal in fine mode (main scanning line density 8 lines/mm x sub scanning line density 7.7 lines/mm).
becomes. If this were to be displayed at the resolution of the television receiver 30 mentioned earlier, one facsimile page would be divided into 60 screens, which would be too large and would be difficult to operate. It will be done. So, frame memo'
The number of pixels stored in J15 is the main scanning line density of 4 lines/mm
Sub-scanning line density 3.85 lines/mm, vertical 1143 x horizontal 84
Set to 0. In this case, the number of divisions is only 15, and it is considered that a practical resolution is maintained.

Now, the distance from the start address to the end address is determined to be 225 in the vertical direction and 300 in the horizontal direction. The area enclosed between the read start address and the read end address of each of the vertical read address counter 16 and the horizontal read address counter 17 (7) becomes the range that is displayed on the television screen at one time.

The read start address is specified based on information input from a cursor key on an operation panel (not shown). For example, when the upward cursor key is pressed once, the read start address of the vertical read address counter 16 moves in the direction of address O by 225 addresses. Here, the possible starting address values AV are AV=225 Xm, (m=0, ■, 2.3
．． 4.5). When the right cursor key is pressed once, the read start address of the horizontal read address counter 17 is 30.
Move in the opposite direction of address 0 by address 0. The possible starting address value A h is Ah = 300 Xn,
(n=o, 1.2). The end address is automatically moved while maintaining a constant distance from the start address. Along with these operations, the area displayed on the television screen changes in stages. In addition, in order to improve usability, there is a method of setting the start address value so that the screen to be switched and displayed partially overlaps with the adjacent screen (A
v=200Xm, Ah=270xn> can also be considered.

Furthermore, directly recording and printing on recording paper without displaying it on the television receiver 30 can be freely performed by instructions from an operation panel (not shown).

〔Effect of the invention〕

As explained above, the present invention allows only the necessary received documents to be recorded and printed on recording paper by displaying the received facsimile image on the television screen of a home television receiver at a practical resolution. There is an effect. This effect is considered to be of great help in the spread of facsimiles to ordinary households, and its effects are significant.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the main parts of an embodiment of the present invention. FIG. 2 is an explanatory diagram of a television screen. 10...Facsimile machine, 11...Network control circuit,
12...Modem, 13...Memory, 14...Decoder, 15...Frame memory, 16...Vertical read address counter, 17...Horizontal read address counter, 18...Reading start address Control circuit, 19.
...Digital-to-analog conversion circuit, 20...TV output terminal, 30...television receiver.

Claims (1)

[Scope of Claims] 1. In a facsimile device equipped with means for transmitting and receiving facsimile signals, there is provided a memory circuit that stores received facsimile signals for multiple pages, and a decoder that reads and decodes the facsimile signals stored in this memory circuit. and a frame memory circuit that stores one screen worth of facsimile signals decoded by this decoder, and the frame whose distance from the read start address to the read end address is adapted to the resolution of a home television screen both vertically and horizontally. vertical and horizontal read address counters of a memory circuit; a read start address control circuit that controls read start addresses in the vertical and horizontal directions of the vertical and horizontal read address counters; and a black and white binary facsimile signal read from the frame memory circuit. What is claimed is: 1. A facsimile device comprising: a digital-to-analog conversion circuit for converting a video signal into a video signal for television; and an output terminal for connecting the output of the conversion circuit to a home television. 2. The facsimile apparatus according to claim 1, wherein the number of pixels stored in the frame memory circuit is 1143 vertically by 840 horizontally, with a main scanning line density of 4 lines/mm and a sub-scanning line density of 3.85 lines/mm.