DE3014218A1 - FACSIMILE EQUIPMENT - Google Patents

Description

Facsimile facility

Description The invention relates to a facsimile device according to the preamble of claim 1.

It is known, in addition to facsimile video signals, that of a scanned Template to transmit identification code signals which the transmitting station, the transmission time, the telephone number of the transmission station, etc. Show. These code signals are generally sent before the facsimile pattern is transmitted, so that they at the head of the facsimile reproduction and the attention of the operator attract in the receiving station.

So far there is a separate facility for the in both stations Identification code required. In the receiver, the codes must be converted into video signals in Form of scan lines are converted for them to be sent by the printer of the receiving station to be printed. This requires an unnecessarily complicated and expensive arrangement.

Often certain characters should be underlined for emphasis (or a line can be made over them) stands for this only a single method available to identify different codes for characters that are to be underlined and to be transferred for characters that are not to be underlined. This requires twice the number of codes that are decoded on the receiving side and an even more complicated decoder is required.

The codes can also be converted into line scan video signals in the transmitter and these signals can then be sent directly. Even if the recipient is not provided with a special circuit, he can use the identification marks because they have the same format as the facsimile video signals. At a However, such an arrangement has a problem that the high frequency image signals lost in transmission over normal telephone lines or through a Noise on the line will be distorted.

Although the receiver is provided with circuitry to reduce amplitude and phase distortion to a minimum and although it does also has an automatic gain control circuit, it still happens to signal losses, especially in the first part of the transmission, which of the identification information is equivalent to.

The identification information is at the head of the facsimile reproduction provided to attract the attention of the operator. if this information is illegible, it is impossible to identify the transmitting station and it it is also not possible to contact the sending station, to request a retransmission. There is a solution to this difficulty in doing an error check such as a CRC check on every sent Perform scan line. However, this becomes the one required for a transmission Time is greatly increased, and so are the cost and complexity of the receiving facilities become larger.

The invention is therefore intended to provide a facsimile device with which marking or identification marks can optionally be underlined, which are printed out on a facsimile reproduction with the aid of a simple device will. Furthermore, a facsimile device is to be created, which data transmission errors with the help of a simple device. According to the invention this is at a facsimile device according to the preamble of claim 1 by the features solved in the characterizing part of claim 1.

According to the invention, character codes with underline bits are selected read out from a memory. A character generator forms character video signals of horizontal scanning lines corresponding to the codes. A line generator generates line video signals corresponding to the underline bits.

If the device is provided in a facsimile transmitter, correspond the codes of the station identification, etc. and are made by hand entered into memory. When the device is used in a facsimile receiver the codes are received by a slow modem and stored in memory. In any case, the recipient gives an original according to the facsimile video signals together with the identification marks, underlined if necessary and are superimposed on the template pattern.

The invention is described below on the basis of preferred embodiments explained in detail with reference to the accompanying drawings. Show it: Fig. 1 is an illustration of a facsimile display according to the invention; Fig.2 a Block diagram of a facsimile device according to the invention, which is in a transmitter is provided; 3 shows a representation of a label reproduction without Underline; FIG. 4 shows a representation of a label reproduction with Underline; Fig. 5 is an illustration of a facsimile transmission method; and Fig. 6 a block diagram of the device provided in a receiver according to the invention.

1 shows a facsimile reproduction according to the invention. A hatched area corresponds to a facsimile reproduction of an original. Identification mark at the head of the reproduction indicate "RICOH No.427". Here the word "RICOH" is not underlined while "No.427" is underlined. With the invention, everyone can none or selected characters for marking or identification underlined will.

A facsimile device designated in its entirety by 11 according to FIG the invention is shown in Fig.2. A scanning device with a lens arrangement 13 and the like scans an original 14 and generates facsimile video signals representative of the horizontal Scan characters of the image pattern correspond. These signals are selectively via a Switch 16 and a modem 17 on a transmission path, for example via a Telephone line, transmitted to a remote receiver. The scanning device Generates horizontal in addition to a reset signal at the beginning of the scanning of the original 14 Clock pulses A and vertical clock pulses B. The scan becomes horizontal, line by line carried out. As soon as a horizontal line is scanned, the original becomes 14 moved forward by one incremental step and it becomes the next lower line scanned.

A character generator 18 has a column counter 19 for counting the horizontal clock pulses. The column counter 19 is a modulo 7 counter and gives an overflow signal when the count exceeds zero. The overflow signal C is applied to a character counter 21, the output of which is used as an address input is connected to a code memory 22. The output of the code memory 22 is with a character generator 23 is connected. The output of the character generator 23 is with connected to a multiplexer 24, the output of which is connected to an input of an exclusive OR gate 26 is connected.

The output of the OR gate 26 is connected to the switch 16.

The vertical clock pulses B are sent to a scanning line counter 27 created, which is a modulo 11 counter. The output of the line counter 27 is with the multiplexer 24 and also with a decoder 28 of a video signal line generator 30 connected. The output of the decoder 28 is connected to an input of an AND gate 29 connected. An output of the code memory 22 is also connected to an input of the AND gate 29 created.

The identification codes, the "RICOH No.427" or any other desired Represent message which is at the head of the facsimile reproduction on the receiving side are to be printed out, are stored in the memory 22 by means of a (not shown) Input keyboard, etc. saved. The identification message will selected by the operator and in the memory 22 by hand, usually stored in the form of an 8 bit code. The first seven bits can be in an ASCII or some other common format, while the eighth bit indicates whether the symbol corresponding to the code must be underlined. Although the following Description refers to underlining, the invention can of course can also be used to add a line or other marking to the corresponding sign to be affixed above this. The eighth bit output of the Code memory 22 is applied to the input of AND gate 29.

During operation, the scanning device 19 gives the reset signal and starts scanning the original 14. The reset signal causes the Counters 18, 21 and 27 reset. The scanning device 12 generates the horizontal Clock pulses A in synchronism with the scanning of the respective horizontal bits of each scanning line. The column counter 18 counts the pulses A and indicates the overflow signals C, which can be counted by the character counter 21.

According to the reset signal, the switch 16 allows the output of the OR gate 26 for a transmission to the modem 17 through. When the count is in the counter 21 reaches a predetermined value that corresponds to the beginning of the information or message field on the display, which also corresponds to the address of the Storage location in memory 22 corresponds, the first character code contains, the code is applied from the memory 22 to the character generator 23. Previously, the output of switch 12 corresponded to an empty area as the The outputs of the character generator 23 and the multiplexer 24 were zero.

When the first character code is applied to the character generator 23, the contents of counters 19 and 27 become zero, creating the first column of a character or the first scan line of the character is displayed. As shown in Fig.4, Each character is assigned an area of seven columns and eleven lines. the Columns 2 through 6 are used as actual artboards, while the columns 1 and 7 serve as spaces or spaces. Lines 2 through 8 will be used for the drawing area. Line 9 is a blank line, which is line 10 Intended for underlining (if necessary) and line 11 is again a blank line. If there is no underlining, the symbol like appears is shown in Fig.3.

The generator generates correspondingly in the zero level in the counter 19 23 the first column of the first character in the memory 22. Corresponding to the zero position in the counter 27, the multiplexer 24 leaves the top bit of the first column of the character by. Decoder 28 outputs a high only when the count is in counter 27 corresponding to the underline or line is nine. Consequently is the Output of decoder 28 low and AND gate 29 locked. The low output of AND gate 29 goes to the exclusive OR gate which then works as a non-inverting buffer and the output of the Multiplexer 24 passes unchanged.

At the next horizontal clock pulse A becomes the column counter 19 is advanced, and the character generator 23 generates the second column of the character. Since the count in the line counter 27 is still zero, the multiplexer 24 the top bit of the first line through. This process lasts for the third up seventh column of the character, so that the top line of the character is generated and supplied to the OR gate 26 and the switch 16 for transmission.

With the eighth pulse A, the counter 19 goes to zero and gives the overflow or transmission pulse C, by which the counter 21 is switched on. At the The second character code is then present at the output of the memory 22. The top line of the second character will then appear in the same way as the top line of the first Character generated and transmitted. This continues until the top scan lines of all Characters have been transmitted.

If the count in the counter 21 shows a predetermined value, which indicates the end of the label area, the memory 21 inputs Signal D from, whereby the Switch 16 is switched and then the output of the scanning device 12 passes. This consists of the facsimile video signals for the first scan line. On the other hand, the memory 22 can have a predetermined one Save the code after the last identification code and accordingly the Output signal D.

When the scanning device 12 starts with the next line of the original 14 begins, it generates a vertical scanning pulse B, by which the counters 19 and 21 are reset and the switch 19 is toggled so that it has the output of the OR gate 26 lets through. The line counter 27 is incremented by the pulse B, thereby causing the multiplexer 24 to scan the second scan lines of the characters which have been generated by the character generator 23 through. The above The process is repeated except that the second lines are in memory 22 stored characters can be transmitted via the switch 16. The lines of the Lines stored in memory 22 are then in the same format as the facsimile video signals generated by the scanner 12 are transmitted continued until the ninth (blank) lines of characters are transmitted. Corresponding the next clock pulse B the multiplexer 24 gives a zero or a logic low Output because it only has a capacity for nine scanning lines. The decoder 28 produces a high output, to release the AND gate 29. the Character codes are then sequentially read in the same manner to thereby generate the To create characters. The eighth bit, which indicates whether to underline or not, is applied to the AND gate 29. When the eighth bit is logic high, the becomes Output of the AND gate 29 high and through the OR gate 26 and the switch 16 as an underline video signal is passed. When the eighth bit is logically low is, indicating not to underline, are the outputs the AND gate 29, the OR gate 26 and the switch 16 logically low, what corresponds to an underline video signal.

According to the next clock pulse B, the output of the decoder 28 is low and video signals for an empty eleventh line are generated. In the Invention, the character video signals are thus generated, which then by means of the underline video signals follow a simple circuit arrangement. Corresponding the counter 27 overflows with the next clock pulse, and so does the scanning device 12 outputs another reset signal, in response to which switch 16 resets the facsimile video data lets through.

More than one line of characters can also be provided by adding additional Bits for the line counter and additional storage capacity in the memory 22 are provided. The additional bits in the line counter 27 would then count how often the counter 27 overflows and this counting result would then used as a more significant address bit input for memory 22. Although it is not shown, a data compressor can, for example, with the help of a Track length coding between the switch 16 and the modem 17 can be provided. the Device 11 according to the invention is shown and described in such a way that they individual Has counter, etc. However, some or all of the operating units may be in one Digital computers are summarized, which is a central processing unit in the form of software or a processor, a read-only memory, a random access memory or a random memory, etc. having.

The invention can also be provided in a facsimile receiver, as shown in FIGS. 5 and 6. In this case the identification codes to the receiver in the ASCII or similar format using a slow Transmitting modems. The transfer process is shown in Fig. 5.

1. In the transmitting station, the operator brings the to be transmitted Template in the scanning device and gives by means of a keyboard and the like. the identification code into the facility. The operator then dials the desired telephone number Receiving station. However, the receiving station can also dial the sending station and request the transmission of a specific template.

2. After switching on the telephone circuit, the receiving station transmits Data that indicate how they can be received, over a slow one Modem (the baud rates, line density, etc.).

3. The sending station selects the highest reception options of the receiving station and, in addition to the size of the original, transfers data indicating these possibilities1 to the receiving station, which sets these operating modes and opts for a Reception prepared. In addition, the transmitting station transmits the identification codes, which the receiving station stores in a code memory. All of this data will be transmitted in code form over slow modems. Then the receiving station prepares to receive facsimile video data through a high-speed modem.

4. The transmitting station sends test data via the fast modem to the Check adaptation of the transmission line. The test data have a predetermined one Binary pattern, which the receiving station with regard to the signal level, a bit error, etc. checks.

5. The receiving station informs the sending station whether it is satisfactory May or not receive data through the slow modem.

6. If the receiving station can receive data, the sending station sends the facsimile video signals over the high speed modem coming from the receiving station can be received via a fast modem. The labeling information is displayed on the facsimile reproduction before or at the same time as the facsimile data is received printed out upon receipt. If the receiving station cannot receive data, it will the priority or the urgency of broadcasting is reduced, until sufficient data transfer is possible.

7. After completion of the transmission of the facsimile data, sends the sending station sends a final message indicating whether or not another template is to be sent send is. This data is transmitted via the fast modem.

8. The receiving station then informs the sending station of the slow Modem that the reception has ended and that the receiving station is ready to receive a to receive further transmissions when indicated.

In the case of a multi-sided transmission, the identification data, if required, printed on each page or only on the first page will. In the first mentioned case, the identification message can be a page number exhibit. Since the identification codes are transmitted via the slow modem, the transmission quality is very high and the bit errors are low. Nevertheless the transmission speed of the codes is very high. It can even have one more higher reliability can be achieved without a noticeable increase in the transmission time, by transmitting the identification codes a number of times. In the receiver a majority logic can be provided for an exact identification of the codes to ensure. The identification codes only need to follow a first page be transmitted.

In Figure 6, the device according to the invention is in a his Unit designated as 41 is provided.

Incoming data and identification codes are sent to a switch 42 created. The identification codes are from the switch 42 via a slow Modem 43 passed to code memory 22. Same or corresponding parts are denoted by the same reference symbols as in FIG. The facsimile video signals that represent the template are activated via switch 42 and a quick Modem 44 hinged to switch 16.

In this case, clock pulses become A 'and B' as well as the reset signal generated by a plotter 46, which the template and the identification corresponding to the facsimile video signals and the character video signals, respectively. The clock pulses A 'and B' are counted by a column multiple counter 47 and a ZeSen multiple counter 48 divided in frequency to receive the A and B pulses. Of the Counter 47 controls the vertical size of the labels, while the line counter 48 controls the horizontal size. The counters 47 and 48 have variable frequency dividers on. For example, if the characters are to be enlarged by a factor of four, each of the counters 47 and 48 has a frequency dividing ratio of four. To this Way, each point can be in four consecutive column positions and four consecutive Line positions are printed.

The operation of the device 41 is the same as that of Facility 11, except that the output of switch 16 is connected to the input of plotter 46 and not is connected to the input of the modem 17.

In the embodiment of Fig. 2, character video signals are correspondingly a character code, and the character video signals are generated in addition to the Transmit line video signals. In the embodiment of Figure 2, the codes itself transmit the underline bits and those generated by the receiver Contain character and line video signals. In the embodiment of Figure 2 can Identifiers and underlines from an unchanged facsimile receiver be received.

The invention thus eliminates the disadvantages of the conventional devices overcome and an improved facsimile transceiver is created at which underlined the identification code with the help of a simple circuit arrangement and data errors can be reduced.

End of description Blank page

Claims (7)

Claims 1. Facsimile device with a memory for storing of identification codes and with a character generator for generating character video signals, which correspond to the codes, in that each character code has information that indicates whether a character corresponding to the code is to is underlined, and that a line generator (18) is provided for the information to feel and generate underline video signals corresponding to the places under the correspond to the characters to be underlined. 2. Device according to claim 1, characterized in that g e k e n n z e i c h -n e t that each code has a number of code bits and an underline bit, and that the line generator (18) generates the underline video signals when the corresponding underline bits have predetermined logic states. 3. Device according to claim 1, g e k e n n z e i c h n e t through reading means for reading the codes from the memory (22) and applying the Codes to the character generator (23). 4. Device according to claim 2, characterized in that g e k e n n z e i c hn e t, that the memory (22) is adapted to hold the character video signals in the form generated by scanning lines that the character generator (23) a line counter (27) for counting the scanning lines, and that the line generator (18) comprises the line video signals only outputs when a counter reading in the line counter (27) has a predetermined value which corresponds to an underscore. 5. Device according to claim 1, g e k e n n z e i c h n e t through transmitting means for transmitting the character video signals and the line video signals. 6. Device according to claim 1, g e k e n n z e i c h n e t through receiving means for receiving the codes and storing the codes in the memory. 7. Device according to claim 6, g e k e n n z e i c h n e t through a plotter j46) for reproducing a template with marks and underlines, the characters or. Line video signals corresponding to the character and are superimposed on the line video signals.