DE1904621A1 - Electronic setting device - Google Patents

Description

6717-68 / Kö / s
RCA 59,366
Convention Date:
January 30, 1968

Radio Corporation of America, New York, N.Y., V.St.A.

Electronic setting device

The invention relates to an electronic setting device.

Mechanical and photographic typesetting processes for the printing of The disadvantage of writing is that it is quite slow and apparently There is little prospect that the setting speed will be significant can be increased. In contrast, the application appears to be more electronic Procedure to promise a significant increase in the setting speed. Electronic light setting devices have recently become available on the market. Such a device works in such a way that with the help of an image generator, for example a cathode ray tube, the to be set Characters from a plurality of adjacent scans or scan lines, that form character segments or segments. A memory in the facility stores commands about when the cathode ray tube is blanked and keyed in, i.e. the electrons beam must be dark or light controlled in order to provide the character segments at the appropriate times. The one on the cathode ray tube Characters shown are shown on a photograph! film for the purpose of later Processing to printing plates shown.

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To characters of high graphic quality or of uniform density can be obtained with a relatively large number of overlaps Samples work. It takes a relatively long time to set such high quality characters. Often times it is desirable that the Setting material much faster, for example for proofreading purposes, of page breaks, etc. In such cases you can Signs of poor graphic quality are perfectly adequate if only they can be obtained quickly. So there is a need for a setting device, which is able to "read" characters from different numbers of samples or generate scan lines.

The invention is based on the object of an electronic light setting device to create that meets this need.

An electronic setting device is used to solve this problem with an image generator, the patterns, for example characters of given point sizes, by means of a number of adjacent segments of the pattern forming scans, with character patterns of high graphic quality formed by a predetermined number of samples at predetermined intervals are provided according to the invention that with the image generator an arrangement to reduce the number of samples to provide Signs of proofreading items as well as an arrangement to increase the distance are coupled between adjacent scans in these characters of proofreading quality, in such a way that corresponding symbols of the same point size of graphic quality on the one hand and proofreading good on the other hand occupy the same area.

In the drawings show:

Figure 1 (composed of 1A and 1B) the block diagram of a electronic setting device according to an embodiment of the invention;

Figure 2 is a schematic illustration showing the formation of a character illustrated in the device of Figure 1; and

Figure 3 is a schematic illustration showing the formation of a character illustrated by proofreading quality.

The embodiment of the light setting device according to the invention shown in FIG. 1 10 includes an imager or image presenter 12, for example a cathode ray tube displaying on its screen 16 patterns such as e.g.

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the characters 14 generated. With the cathode ray tube 12 you can in the context of Invention also other representations or patterns, for example line drawings produce. That from cathode 20 of the electron gun system Scanning beam 18 (not shown) emanating from cathode ray tube 12 is generated by horizontal and vertical deflection coils mounted on the neck of the tube 22 and 24 distracted. The patterns or characters are generated by the scanning beam spot 26 generated by the scanning beam 18 on the fluorescent screen 16 of the tube 12 generated. The light emitted by the luminescent screen is transmitted through optics, shown in FIG. 1 as a single convex lens 28, onto a photosensitive lens Recording surface such as a photographic film 30 with high Focused gamma value. The film 30 is between two coils 32 in the focal plane the lens 28 arranged. The coils 32 are driven by a drive motor 34 driven so that the film 30 is in front of each line after the completion of setting a character on the next line. The cathode ray tube 12 and the remaining components of the photosensitive part of the device 10 are in a light-tight housing (indicated by dashed lines in FIG. 1) with opening flaps (not shown) for inserting and removing the film 30 arranged.

The character 14 reproduced in an enlarged representation in FIG. 2 and to be set by the device 10 consists of a capital letter "H" of a sans-serif type set of a given point size. The capital letter “H” and all other characters and patterns generated by the light setting device 10 are composed of a number of vertical black segments 36. The segments 36 are character sections which consist of those parts of the individual scans or scan lines during which the electron beam 18 of the tube 12 is scanned. A scan or scan line corresponds to a vertical crossing of the screen 16 of the tube 12 by the scanning beam 18, although horizontal scanning can of course also be used. Those scanning parts or sections during which the electron beam 18 is blanked form white segments 38, some representative ones of which are indicated by dashed lines in FIG. In the cathode ray tube 12 itself, the black segments 36 naturally appear, in contrast to the illustration in FIG. 2, white on a black background. In the case of characters of high graphic quality, the individual black segments 36 overlap one another, their number being selected to be so large that a character of essentially uniform density is produced on the photographic film 30. While for the sake of clarity, the character ¹¹ H "in Figure 2 as from only

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20 character sections is shown composed, can be seen in the Work in practice with e.g. 80 character segments. The capital letter "H" sits on a character baseline 37 and rises a certain distance according to the font size, i.e. the point size of the character about this character base. One twice the size of the given point size of the character "H" corresponds to a character twice the height and twice the width of the character "H" in Figure 2. The reverse is true for a character with half the point size of the character "H", etc.

The individual characters of a type set of characters are defined by a series of parameters. This includes the so-called font 41 (shown in dashed lines in FIG. 2), which determines the point size of the character. The total set width 42 of the character is equal to the sum of the * character width 43 (CW) and the front hem 44 (Lee) and the back hem 45 (tSb) of the character. The front seam 44 is defined as the distance between the front or left outer peripheral edge of the character and the front edge of the set width of the character. Correspondingly, the back seam 43 is defined as the distance between the right edge of the character and the rear land of the font width of the character. The distance of a character from the neighboring character corresponds to the sum of the back margin and the front margin of the relevant consecutive characters. In the case of characters of high graphic quality, the front hem and the back hem for the capital letter ¹¹ H ″ can each comprise, for example, seven scans with a character width 43 of 80 scans.

The parameters or characteristics of a character and other data to be explained are stored in a memory 30 (FIG. 1). For the memory 30, for example, a magnetic core memory with random access (random memory) can be used, which is divided into two main parts, namely a primary part 52 and a secondary part 54. The primary part 52 contains a number of successive memory cells which correspond in a ratio of 1: 1 to the characters and other symbols and characters of a plurality of type sets. Each multi-bit storage location in the primary part 32 is addressed by a character code, for example in the form of a binary number representing the relevant character in encrypted form. The sequence of addresses of the memory cells in the primary part 52 of the memory can begin with the capital letter "A", then continue to the capital letter ^H Z ", then ^{move on to the lower case letter 11} a", and so on until the end of the first set of letters. Such a type set can be referred to as a type set of high graphic quality. Immediately afterwards can be done in the same way as the first type set.

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a second type set of proofreading or proofs is stored be. In the present case, it is assumed that there are only two type sets in memory 50, namely one type set of high graphic quality and one type set of proofs are stored.

The content of each individual primary cell of the memory 50 represents effectively represents an address for that cell in the secondary part of the memory which stores the first of the encrypted characteristics or parameters for the character in question. Therefore, if using a character code, the character in The primary part of the memory 50 is addressed / supplies the from the memory read out number a secondary address for the secondary part of memory 50, with which a block of addresses begins for those secondary cells in which the coded parameters of the character are stored consecutively. Such a design of the memory 50 has the advantage that identical letters or characters of each type set have the same character code. The same character has the same in two different type sets Character code, but the character code of the character in the second type set is increased by a fixed number in order to obtain the address of the character in the primary part of the memory 50 to arrive. This results from the fact that the type sets are stored one after the other and in the same progression from A to Z and so on. Of course, each type set has different secondary addresses.

The secondary part of the memory 50 sequentially stores those for generation of a character pattern on the cathode ray tube 12 required information blocks. The content of the first memory cell for a data block in the secondary part 54 is an encrypted representation of the number of samples in the front hem (! SB) of the sign. The content of the next Cell is an encrypted representation of the sum of the number of samples of the character width (CW) and the trailing edge (! SB) of the character. as In the next format data group, the number of scans in the character width is stored in the next cell. For the sake of simplicity it is assumed that that all characters begin on the same character base. The next data stored in the block does not appear format data, but rather the segment data, i.e. the successive encrypted representations the lengths of the individual black segments and the individual white segments in each scan of the character. In the case of the "H" according to Figure 2, the individual lengths of all black segments 36 in the

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left vertical or vertical lines of the character saved. For example A binary data word can be stored for each black segment 36. the Lengths of white segment 38 and black segment 36 for each scan in the middle part or crossbar of the character "H" are then saved. You can use a binary data word for each of these lengths to store Use each white segment and one binary data word for each black segment 36. Finally, to complete the entire character, binary words are used, which represent the right vertical or longitudinal bars of the character "H", saved.

So that the reading of the memory 50 is synchronized with the scanning beam 18 is running, the stored segment words also contain data about the beginning and the return of the scanning beam 18 as well as its keying out and in. In fact, the least significant bit of a binary word for a black segment 36, i.e. the 2 bit, can mark the end of a scan. One Scanning never ends with a white segment since the scanning beam 18 tilts back in a scanning line after the last black segment has ended will. So if a black segment contains a binary "1" in this 2-bit position, so it means that this black segment is the last black segment is in the relevant scan. A binary "0" in the 2 -bit position of a Black segment indicates that at least one further black segment occurs in the relevant scan. The bit in the 2 -bit position is determined not only the end of a scan, but also, as will be explained becomes, the beginning of the scan. The return of the scanning beam takes place So then,

occurs.

So if there is a binary "1" in the 2 -bit position of a black segment

The next higher bit in the segment words, i.e. the 2 bit, indicates when the scanning beam is switched on (i.e., scanned in) and when it is switched off (i.e. blanked). The scanning beam is scanned in if a binary "1" is stored in this position, and scanned out, if a binary "0" is stored in this position. The black segment words are thus different from the white segment words through the one in this 2 bit position stored bits differentiated. Consequently, the blanking out or formation of the character segments is controlled by the sagittal words themselves.

That secondary part of the memory 50 that stores the data blocks for the Type set contains high graphic quality, requires more memory cells than

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the part that contains the data blocks for the type set of gross deduction. This can be seen by looking at Figure 2 with Figure 3, which has a character "H" from Proof reproduces good compares. PtIr the latter characters one can e.g. with only ten samples, as opposed to twenty samples for the Characters according to Figure 2 are required, get along.

In the device according to Figure 1 it is provided that a magnetic tape 60, on which editorial and text information is recorded, read by means of a tape reader 62.Not only the actual print text, but also the necessary instructions for excluding, separating, etc. are recorded on the magnetic tape . In addition, the data recorded on the magnetic tape 60 specifies the point size of the characters to be generated, the graininess of the characters, and the type set to be used. Granularity is defined as the number of character samples per font. A high degree of granularity corresponds to a type set of high graphic quality, whereas a low level corresponds to a type set of proofs. All data read from the tape by the tape reader 62 about a character to be printed are stored in an input buffer register 64. After reading the data from the tape 60 into the register 64, the tape reader 62 generates a start pulse which activates a clock control circuit 70 so that this initiates the transmission of data into and through the device 10. The clock control circuit consists of normal time control stages which supply the sequences of clock signal pulses (TP) required for the transmission of data in and through the device 10. ' ^:

The individual clock pulses TP are labeled with consecutive index numbers corresponding to the time of their generation, ie TP is the first, ¹ TP _{9 is} the second, etc. clock pulse. To generate the clock pulses, clock pulses from a central clock generator 128, for example, can be fed to a number of monostable multivibrators (monoflops), which then generate a sequence of successive clock pulses that are selected for the transmission of data in and through the device 10. In order to delay certain impulses, delay lines are coupled to these multivibrators. The entire storage unit (storage subsystem) 51 as well as the other circuit arrangements used represent conventional, known arrangements which are therefore not described in detail here. A first clock pulse TP ₁ causes the buffer register 64, the encrypted de-? Ellung the point size of the

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To pass characters through transmission gate 71 to a point size or distance control register 73. It is assumed that the transfer of all Data in the system 10 takes place in parallel, so that a transmission gate is required for each data bit to be transmitted. All direct, i.e. undelayed, clock pulses are marked with TP, whereas the delayed clock pulses are marked with TP designated.

A second clock pulse TP "shifts the encrypted representation of the granularity of the characters into the output stages of the buffer register 64, and a third clock pulse TP shifts this data through the transmission gates 75 into a granularity register 77 * a fourth clock pulse TP. shifts the character code into the output stages of the buffer register 64, and a fifth clock pulse TP shifts the character code through the transmission gates 66 directly into an address register 68 in the memory unit 51 when a character from the set of high graphic quality is to be printed. If characters from the proof set are to be printed, the buffer register 66 causes an incrementer 67 to increase the address in register 68 by a fixed amount to the address of the corresponding character in the proof set. The tape reader 62 also transmits a command to the drive motor 34 to set the film 30 for a particular line of print.

A sixth clock pulse TP _g shifts the character code in the address register 68 through the transmission gates 72 into a JE-Y decoder 74 read in. The data register 78, under the control of a clock pulse TP, ie the delayed clock pulse TP_, stores the data read out from the memory 50 via write gates 80 directly back into the same cell of the memory 50. In all of the operations described here, the clock pulse, which in each case triggers a read process, is delayed in order to effect a write process, so that the data are read out from memory 50 in a non-destructive manner. The data contained in the data register 78 are transferred to the address register 68 by transfer gate 82 under the control of a clock pulse TPg, since the first data read out from the memory 50 when a character is printed designates the first address in the secondary part of the memory 50 for the data block containing the for the generation of the character on the image viewer 12 includes character parameters required. The secondary address is set by the clock pulse TP-

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passed through transmission gates 72, and by a delayed clock pulse the data are written back into the memory 50. The data will be then by the clock pulse TP via the read gates 76 into the data register 78 read in. The secondary part of the memory 50 is thus addressed and read out successively.

The first data read out from the memory 50 in the block of character parameters stored in the secondary part of the memory contain a binary number which represents the leading edge of the character. These data are fed to a binary adder 86 by the clock pulse TP _{11 via the transmission gates 84.} The binary adder 86 adds the contents of the data register 78 to the contents of a register 90 which stores the sum of the character width and the trailing edge of the previous character. The sum of the data in register 78 and the sum of the data in register 90 corresponds to the horizontal position of the start of the new character to be generated on the image display 12. The sum produced by the binary adder is added to the contents of an accumulator 87 so that the accumulative position of the start of the scans of each character when the characters are printed on the photographic film 30 is known. When reading out the data from the register 78, an incrementer 79 increases the address register 68 by 1 to the next address in the secondary part of the memory 50. The purpose of the AND gate 69 shown in dashed lines and coupled to the incrementer 79 as well as the other dashed circuit elements in FIG. 1 will be explained later. The data in this subsequent secondary address contain a binary number, which contains the sum of the character width and the trailing edge; these data are read into the decoder 74 by a clock pulse TP _{12 supplied to the gates 72.} These data are read from the memory by a clock pulse TP supplied to the read gates 76 and transferred to the register 90 _{by a clock pulse TP 1 via the gates 88.} The new content of the register 90 remains stored there until the next character is read, whereupon the binary adder 86 adds this content to the leading edge of the next character. This sum determines the position to which the scanning beam must jump at the end of the scanning of a character at the beginning of the scanning of the next character.

The accumulated total value stored in the accumulator 87 is transmitted by a clock pulse TP ₁ - via the transmission gates 92 to a horizontal counter 94, which is thereby set to a corresponding count value.

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will provide. A binary counter can be used for the horizontal counter 94, for example use with a number of plip-flop levels so that the scanning beam spot 26 in the imager 12 in the course of the printing of a line of characters on the film 30 is gradually guided over the screen 16. Every flip-flop The binary horizontal counter 94 is also equipped with a granularity switch 59 coupled which may consist of a number of AND gates, each of which corresponds to a different solution that can be produced with the system 10. the an input variable of each of the AND gates in switch 59 corresponds to the respective one Granularity or graphic quality selected for the character to be printed and taken from the granularity register 77. As a second input variable receive the individual AND gates of the switch 59 clock pulses from a clock generator 81 is generated and fed to the switch 59 via an AND gate 83 will. The AND gates of the granularity switch 59 are each with coupled to another of the flip-flops of the counter 94, and depending on which of the flip-flops is selected by the activated AND gate in the Xärnigkeitswitch 59 is, the horizontal counter 94 counts by appropriate binary factors. When the granularity switch 59 is the first or lowest digit flip-flop (i.e. the 2 flip-flop), the count value in the counter 94 goes up by 1 for each clock pulse passed through the AND gate 83. When the flip-flop is the 2 digit is selected, the count value of the horizontal counter 94 increases at every clock pulse at 2. Correspondingly, if the nth flip-flop is selected, the count of the counter 94 with each clock pulse by a step of 2 digits up. Since the horizontal counter 94 is effectively the horizontal position of the scanning beam spot 26 is determined for each character section, the counter 94 causes the character sections to correspond to the bad instructions either closer to each other or further apart.

The count value of the horizontal counter 94 is passed _{through the transmission gates 96 by a clock pulse TP 16} and passed to the * horizontal position register 98 at the end of each scan. The position number in the horizontal register 98 is fed to a digital-to-analog converter 100, in which the digital data are translated into an analog voltage for the horizontal adjustment of the scanning beam 18. The analog voltage is converted in a horizontal deflection stage 102 into a current which feeds the horizontal deflection coils 22 of the cathode ray tube 12.

When transferring the item number from the horizontal counter 94 am A flip-flop 85 is set at the end of a scan. This will make the AND

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Gate 83 is activated so that the horizontal counter 94 moves to the next scan line is set. In the absence of granularity control, i.e. if none granularity switch 59 is provided, the location of the next scan line determined by the point size of the character to be printed. For a second character twice the point size of a first character of the same graininess the center point of the scanning beam spot 26 jumps per scanning line by a horizontal distance which is exactly twice as large as the jump distance at the first character. In the case of characters with high graphic fonts, they overlap the scan lines even with a scan beam spot 26 of narrow aperture or focus. So what is effectively controlled when changing the point size of the characters is the Qrad of the overlap of the scan lines.

A binary representation of the point size of the character to be printed is in the Scan line spacing control register 73 is stored, and a clock pulse TP. "causes transmission gates 89 to send this distance number to a distance control counter 91 transferred to its festival division. The output clock pulse of AND gate 83 causes distance control counter 91 to count down, and a zero decoder 93 signals when the counter 91 reaches 0, and also disables AND gate 83 and prevents further clock pulses cause the horizontal counter 94 to count up. The output signal of the zero decoder 93 also activates the transmission gates 89 and resets the flip-flop 85. The transfer gates 89 therefore cause the distance control counter 91 is set to the same dot size number; however, the counter 91 does not count down until the horizontal counter 94 the flip-flop 85 sets at the end of a scan. The advantage of this operation is that during one scan line the counter 94 moves to the next Scan line position is indexed and has time to expire before the next position number is transferred to horizontal position register 98 will. This avoids an expiration delay since the expiration occurs during the previous scan.

It is clear that when the binary representations taken from the magnetic tape the spot size of these are proportional, the device 10 enables a very rapid change in the spot size. For example, if the binary representation for a character of 6 points corresponds to the binary equivalent of a size 6 and for a character of 7 points corresponds to the binary equivalent of 7, so the horizontal counter 94 switches between // 'scans for a 6 point character by 6 steps and for a 7 point character by 7 steps. The hori-

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zontal distance between the individual scans is therefore in the correct Changed ratio to change in point size. In the device 10, the distance control register 73 operates via a digital-to-analog converter 113 also a linear control of the gain of the vertical deflection stage 112. The vertical dimension of the character is in the correct proportion changed to change the point size. And that is at high gain of the vertical deflection stage 112, the vertical scanning path of the scanning beam 18 is longer during a scan than at low gain.

In the device 10, characters can be enlarged or reduced by changing the point sizes. Also other mister like line or Line drawings can be enlarged or reduced so that they fill the space on film 30 where the line drawing is to appear. By Changes in graininess in line drawings expand the magnification range of such drawings.

The incrementer 79 increments the address register 68 to the next data, namely the character width (CW). The clock pulse TP_ causes the decoder 74 to select this data, and the clock pulse TP ₁ causes the data to be read into the data register 78. The binary representation of the number of scan lines in the character width is inputted by a clock pulse on the _Q TP_ Ubertragungsgatter 114 in a Abtastungstähler 116th The scanning counter 116 is decreased by the count value 1 at the end of each scanning line, so that when the count value 0 is reached, a zero decoder 118 coupled to the scanning counter 116 signals that the end of a character has been reached. This signal causes tape reader 62 to read the next character from tape 60.

The segment data which actually write down the character segments on the tube are read out from the memory 50 as the next data 12 effect. These data are read out and transferred under control by corresponding segment data clock pulses which are generated in the clock control stages 70 in the course of a subroutine. The segment data will Inputted to a buffer register 112 via the transmission gates 120. That Register 162 stores at least the entire number of vial and black segments of a complete scan in one character. Desirably, register 122 stores segment data for multiple scans, where also worked with simultaneous read-write operation, i.e. in cross-cycle operation

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can be lcann in such a way that a section of the register 122 is written to and at the same time read from another section. This avoids a delay in writing the segment patterns on the imager tube 12. A bit detector 123 coupled to the output of the transmission gate 120 detects a binary ^H 1 ^H in the 2-bit position of the segments entering the buffer register 122. When this bit is detected, the bit detector 123 activates a sawtooth generator 134 so that the vertical deflection of the scanning beam 18 begins. The bit detector 123 also transmits the segments via the transmission gates 124 to a video counter 126. The video counter 126 is fixed by the gates 124 and caused by a clock oscillator or clock generator 128 to count downwards. The central clock for the clock control stages 70, which supplies the basic clock pulses or clock pulses for these stages, can serve as clock generator 128. When the video counter 126 reaches the count value 0, a number decoder 130 transfers a new segment from the buffer register 122 to the videox * here 12 '.

A dual bit detector 132 is also coupled to the output of transmission gates 124 and detects bits J and 2 in each segment. Venn bit 2 in a segment. "1" is, the bit detector 131 sends a signal to the cathode 20 of the hole 12, where the cathode 20 is tensioned so that the scanning beam 18 is switched on, i.e. barked. If a "0" is perceived in this 2-bit position, the cathode 10 is tensioned in such a way that the scanning beam '18 is switched off, i.e. darkened. If a binary "1" is perceived in the 1 -bit position, an interception signal is sent to a UHD aatter 133 and with the "A" W0tJ "0f * ifntl of the S" lldecoder 130 this satter channeled in order to display the "field-tine scan". This The "end of scan" signal stops the SMgeiahngenerator 134 if the 3-segment data is used to form the last Sahvar "segment of the scan have been*

. The lapping tooth signal generated in generator 134 causes the scanning beam 18, from a jet rest position (see e.g. line 37 in Figure l) upwards Keys. With the Micksteilen de «sawtooth generator * 134, the kick run takes place Scanning beam * into the beam resting stand (line 37 in Figure l). The output signal of the gate 133, which signals the loading of a scan, causes also that the horizontal counter 94 is up and the sampling counter 116 , counts down. Since the buffer register 122 samples segments from different

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At

May contain samples, multiple video counters 126 may also be provided to ensure that when reading the data from the memory 30 there is no delay.

In describing the operation of the photocomposing device 10, it is assumed that first a character "H" of high graphic quality and then a character ^H H "of proofs are to be printed. Furthermore, provided that FIGS. 2 and 3 show the relative appearance of these characters, expressed by the respective number of character segments, in such a way that the character ⁿ H ^{H of} high graphic quality according to FIG. 2 has twice the number of character segments as the character "H" of corrective deduction quality according to FIG. 3.

Of course, there is mutual overlap with each of the characters or touching the individual scan lines. In the case of characters with a large dot size and graininess, the scanning beam spot 26 can be enlarged by defocusing so that the successive scanning lines touch one another. The tape reader 62 reads from the tape 60 the spot size, grain, and type of the characters to be printed. The point size of a character is stored in the distance control register 73 via the transmission gate 71 as a result of the activation of the clock control circuit 70 by the tape reader. Then For example, the character code of the high graphic quality character "H", which includes a Pri-MMad address in memory 30, is read from tape 60. The content of this address specifies the secondary address of the first subject of the for the formation of the character "H" of this record required data blocks. Of the Character code is put in the address register 68 directly. The content of this first primary is thus stored in memory 50 in the data register 7t read. Since these data actually contain a secondary address, they are transferred to the address register 68 via the transfer gates 82, wear.

The address register 68 then addresses the first cell in the secondary part of the memory 30, in which the format and other data for the formation of the character "H" of the high graphic quality begin. Bi becomes consequently the YordersauK (Lee) of the character "H" is read from the memory 30 into the data register 78. The front edge data are then passed via the transmission gates 84 to the binary adder S (I and there to the contents of the register added up. Since the register 90 is the sum of the character width and the trailing edge

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of the previous character, its content is zero at this point in time, since the requirement is that the character ¹¹ H "should be the first character of a print line. As a result, only the ^{leading edge data of the character H} H ^{H are} fed to the accumulator 87. This value is then effected via the transmission gates 92 the setting of the horizontal counter 94, which in turn effects the setting of the horizontal register 98 to this value via the transmission gates 96. The content of the horizontal register 98 is translated into a corresponding analog value in the digital-to-analog converter 100. This analog value reaches the deflection stage 102 so that the Scanning beam 18 is adjusted to a point corresponding to point 144 on line 37 in Figure 2. The scanning beam 18 is thus in the correct horizontal position for the start of the blanking of the character "H".

The transmission gates 89 are also activated by the clock control circuit 70, whereby the distance control counter 91 is set to the binary number corresponding ^{to the distance between the individual scans for a character of the point size specified for the character M} H ^M. The horizontal counter 94 also sets the flip-flop 85 when the horizontal position of the scanning beam is transferred to the horizontal register 98. By setting the flip-flop 85, the AND gate 83 is activated, since the zero decoder 93 has pre-sampled this smooth by not applying a zero signal to its blocking input. When the AND gate 83 is activated, the clock pulses are passed through by the clock generator 81, so that the distance control counter counts down. The clock pulses are also passed through the granularity switch 59 to the 2-bit input of the horizontal counter 94, so that this counter counts up. The 2 input is gated by the obscurity switch 59, since a character of high graphic quality is to be printed. The number of clock pulses passing through the AND gate 83 corresponds to a count of the dot size of a character. The counter 91 counts down to 0 according to the clock pulses, whereupon the zero decoder 93 blocks the AND gate 83, resets the flip-flop 85 and also activates the transmission gate 89, so that the distance control counter 91 is reset to the binary number previously contained in it. While the distance control counter 91 was counting down, the horizontal counter 94 has counted up an equal number of pulses so that it effectively stores the position of the scanning beam 18 for the next scan even though the first scan has not yet ended.

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The increment 79 increases each time a data word is read out from the memory 50 and this data word is transmitted through the data register 78 the binary number contained in the address register 68 and causes the Address register 68 the next cell in the secondary data block in memory 50 addressed. The data for the character width and the trailing edge are correspondingly read into the data register 78. These data are then transferred to the transfer> gates 88 are transferred to register 90 where they are stored during the scanning of the entire "H" character and thus to the front seam of the next character can be added so that the scanning beam 18 can be properly adjusted to begin scanning the next character can. The incrementer 79 then increments the address register 68 so that the character width, i.e. a binary number which represents the actual number of scans required to form a character, is read out. This data is passed through transmission gates 114 to bar or scan counter 116.

The next data read out from the memory 50 is the scan segment data required for the construction of the character "H". The first byte of this data comprises a binary number which indicates the number of pulses from the clock generator 128 which fall in the interval of the blackness segment 36 between points 144 and 146 in FIG. When this number is read into the buffer register 122 via the transmission gates 120, the bit detector 123 detects the binary ^M 1 "in the 2 -digit of this number, which means that an entire scan or a line has been entered into the buffer register 122. The bit detector 123 then activates the transmission gates 124 to set the video counter 126 with the segment data from the buffer register 122 and the sawtooth generator 134 to initiate the generation of a sawtooth signal.

monostable Ifalti- coupled with the 2 -digit of the transmission gates 1t0

Since the first line of the character " ^H R ^{H is} a Sclnrar" segment, does de? Bit detector 13t the binary "1" in the fi ^ -ttelle of the segment data and generates a signal that is fed to the cathode ί§ 4er Ma * «11 and there switches the scanning beam 18 on. 0 * "Iimal vc-a 8äg" saii & f "aerator 1J4 gets to Tertikalaeltaketu # e 111, so AiA the"! Ftf "groped 4bta" tstrakl 18 from position 144 vertically into the Po "itieft Uf (Fijar t) g" kl * f> t will. As a result, the tathodenstMüHrökr * If on the lUdechir * ti. * & »§ @ ava * isftgnent 36

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written ^ The light emitted by the phosphor of the screen 16 is through the lens 28 focuses on the photographic film 30 with a high gamraa value, so that a black portion of the character "H" on the film 20 is exposed.

The bit detector 132 also detects the presence of a binary ^H 1 "in the lowest bit position 2, the U downward bit portions, and supplies the AND gate 133 with a continuous U downward signal. The clock 128 causes the video counter 126 to count down, and if so the scanning beam 18 reaches the position 146 in Figure 2; the zero decoder 130 detects the end of the down counting and activates the AND gate 13. The output of the AND gate 133 resets the sawtooth generator 134, whereupon the beam 18 is directed to the . Basislini · 37 (Figure 2) back tilts the bit detector 132 is a flip-flop can thus contain, the "a set of the scanning beam eintastenden signal in the 2 -Bitstelle a data number to form and then through disappointments <v?" by a bi nary ^1: isr a · binary "0 ^M in this 2 -bit" 11e or by the end of scanning atisyäiij .: <- ^. näl us "AND gate 133 is reset. In addition to de *, the bit gate 132 contains a second flip-flop which is set by "in" binary "1" in the 2-bit part of the data and the input of the gate 133 with its run signal. This flip-flop is reset by the starting signal of the gate 133, which "signals" the end of a scan. The scanning beam 18 is thereby blanked again.

At the bottom of the segment, the KuXI decoder 130 generates a transmission signal which is fed to the transmission feeders 184 so that the next Segment is transmitted to the video counter 126 when the bit detector 1t3 a for another scan «« «» «iahend« meng «of data perceives. At the end of the scanning signal from the DHB-6tett "r 13Sf!", The 4t? Aktastungszähler 111 counts down and the transmission gates 96 the position of the next scan to Isrizo & talregister 98. This position number provides naofc conversion to an analog signal by the digital-to-analog converter 1Θ0 via the deflection stage 102 the scanning beam 18 to the point 147 (Figure 2) a. A black segment of the character "H" on the film 30 comprising a complete scan is thus exposed, whereupon the "BUr ^ .tiWf 10 in Readiness for 4i "Generation of the aXc & eten ZeickeaafeFahsdtts is"

They individually «» fekw «rss« ffment · de «character ⁿ W in« esse »left» part. Are each exposed in «5« r »« sharp manner on the film 30. Respectively

901836/1068

At

when writing a segment, the sample counter 116 counts down by 1. When the middle of the character ^tt H ^{H is} reached, the first segment to be written is an ice segment. The scanning beam is therefore blanked in each case during the part of the individual scans shown in dashed lines in the figure. Otherwise, the procedure is as already described. When the end of the character ¹¹ H "is reached, the scan counter 116 has counted down to 0 and the zero decoder 118 indicates that the tape reader 62 is to read the next character.

PUr da * Writing each individual character section in the character "H" according to FIG. 2 on the screen 16 of the cathode ray tube 12 takes a certain amount of time. The more character segments are required in a character, the long «? it takes to write the entire character *. FHr some purposes, for example xun KeK? & Ätx, iiesen _t page break so it comes mvt £ graphically "GS! Ta ic? printed characters, provided that the * <ji- = ■ · '",: il £ .rh & upt can be read and assume the same FlScM® aim ^: .; tL'Ä characters of high graphic (» te in the final! © pie "SLt of the device 10 it is possible to print Zeiahea of correction ssJer Fpobea & ätugsgüte like""B. the character ^K W> is. Figur 3 in sine" E. part of that page, $ .ie #% & &: i Printing a * sign high * 3?% Phic quality required

It is »assumed« B _f that now the X «ioh« tt "I" is to be printed in F ^ obeaba ^ gsgilte as the next sign of a bridle rope «» The basal reader O runs «ttts ?? ac & $ nd Tom Band <0 die PunlctgrSßa, die ISrMgIceit aad die IjrpeR ^ t ab. Me Vf ^ scfeiüss ^ lte »Bat *teilung en der Fmiktgr'oB <s and the Xör-n: ^; ktit $ part «a via the ObertrafusfSgatter 71 and 75 the distance tax register 71 litw. the ISraiglieitsrefistes' 77 on the ent »pr®eä« »dea values. Nature-Ii "^ is at 4" R a "f" a.oii "cKft" example the size "the same €; _s while the new «'£ ^ rBigkeitsw« rt i * ZeyEiflieitsregister 77 hmflTkt-t that the

ι 59 the Ulfr-Gattsr 83 nit dealing with d @ 3 ä -Mt-Flip-

flops i »ahler 54 connects. FeIflieA wis-d dursM jsdan durdi ö-ss Filled up clock pulse from Taä? T®®b «s? 81 the Sihlwert of the H © ris © ssts3.sählers 94 is found to be 2, This results in & tn 2eieb «a _f at the distance s ^ 'i? ^' -: - ä the oak sections double S3 gy & B is like dia Singsmgs ^ s ¹

Flip-flop * in the counter 94. Wte «ds * vo ^ CSrnifkeitsse & alfsi? 59 sli ^ ivierte Flip the a ² -bit flip £ l © F, so wires * # 4 jeeie »mwimpsla € 32 · ^ iMwert im Zäh--

lef 94 increased by 4, weöui'sli d-j? Ai * t «a? I see the euBselsen character segments would get even bigger. Kit of the device 10 white as ©

309836/1058

get distances that increase by binary factors. Using a decimal counter instead of a binary counter, however, one can also get decimal distance changes. Of course, the total number of character sections must be reduced accordingly in order to maintain the same point size. It is therefore the number of samples in the character width with a sign of proofs smaller than the number of scans a corresponding character of the same point size of high graphic quality.

The incrementer 67 is activated by the type reading from the tape 60 and the character code for the character "H" of the proof quality is read into the address register 68 increased by the incrementer 67 by a fixed amount. The same character code can thus be used for the letter ^M H "in the two type sets stored in the memory 50, the correct primary part 52 of the memory 50 being addressed by adding known fixed amounts to the character code number 50 are to be stored, of course, additional incremental amounts are given to the incrementer 67 for the correct addressing of these type sets. The content of this primary cell is read into the address register 68, since it is the secondary address of the beginning £ <*? In the secondary part of the memory 50 contained block of format and /:.-,.; * D ■, '- ; ü for''as proof mark ^M H ". As the first Fo5? Mat & at «ir *. the date? " xilr the leading edge of the correction deduction mark ^H H "aui.;, ■ -.....; - ■■ -..-, Me» e data are added to the contents of the register 90 in binary adders 86, and the sum then becomes the The number stored in the accumulator 87, which in the present case contains the leading edge of the previous character, is added. Remember, the content of the register 90 consists of the character width and the trailing edge of the previously printed character and set the horizontal register M. The total value accumulated therein is converted into an analog value in the digital / analog converter 100 and then fed to the deflection stage 10B so that the scanning beam 18 is set to the horizontal position 148 in FIG 18 jumped to point 148 in FIG. 3, so that no time was wasted scanning the room or space between the characters.

The line width and the back for the Frobtafckttfsttiahen "H" the register 90 is entered, the bit MB nicks th characters remain saved. Then the closed ti te fteritelUnf 4-part

909836/1068 bad OR.G.NAL

50ο

of samples of the character width is input to the sample counter 116. The number of scans in the proof character ¹¹ H "according to Figure 3 is half the number of scans for the character" H "higher graphic (site according to Figure 2, since the adjacent scans are each twice as large as in the case of the character" H "high graphic quality ..

The scanning beam 18 is adjusted so that it writes out the proof mark "H ^M , and the character is generated in principle in the same way as in the case of the character according to FIG. 2. At the end of the setting of a print cell, the tape reader 62 signals the drive motor 24 that this vorschaltet the photographic film 30 to the next line, wherein in addition, the horizontal counter 94 is reset to the beginning of another print line. _v

The light setting device 10 described above therefore works extremely well fast when it comes to setting the standard for proof quality only. The facility is also able to control the graininess of the Gradually convert characters from high graphic quality to proofs.

The type sets for the high graphic quality and the proof quality need not be stored all the time in memory 50. There the proof type sets require less storage space and the facility 10 operates at high speed, the proof type sets can be written into the memory 50 very quickly.

If the type sets stored in memory 50 are in a certain way so are arranged so that for each character data words are stored in the same number per each individual scan, so one can in each case every second, fourth or nth scan to print out, eliminating the need to type To store the set of proof quality in the memory 50 is not necessary. This is an AND gate 69 (shown in dashed lines in FIG. 1) coupled to the riser 79, so that the increment 79 is increased by an additional amount, which is determined by a counter 101, by clock pulses from the clock generator 81. When segment data is read out from the memory 50 and transferred through the data register 78 and the AND gate 109, a flip-flop 103 (dashed line shown) and thereby the counter 10_1 is reset to 0. The AND gate 69 is then activated so that it passes clock pulses, which cause the incrementer 79 to change the address in the address register 68

909836/1068

to increase the amount set in counter 101. Thus, when the counter is set so that it counts to 3, the AND gate 69, after it has passed three pulses, by the output signal fed to its blocking input of the counter 101 is blocked · Furthermore, the output signal

103
of the counter 101 the flip-flop / reset is also set. For the segment data read out from the memory 50 in each character section, the address register 68 jumps over three character sections to the fourth section, which is then addressed.

In order to ensure that the sample or character segment count comes out round or even during the jump counting, an AND gate 105 (shown in dashed lines) is coupled between the transmission gates 114 and a divider circuit 107 (also shown in dashed lines). The AND gate 105 is activated by a flip-flop 111 which is set by the tape reader 62 and causes the divider circuit 107 to divide the number of scans in the character width by the corresponding amount in order to compensate for the skipped or skipped scan lines. The flip-flop 111 is reset by a signal "end of character ^{11. The} divider circuit 107 divides in such a way that samples which are not smoothly divisible are effectively deleted.

The invention thus creates a light setting device with which, both signs of proof good and signs of high graphic Have a good print. The printing of the characters from the proof sheet is done very quickly, so that the page break and the production of the proofs can be done quickly.

909836/106 0

Claims (6)

Claims 1t Electronic setting means with an image generator for setting symbol given Punktgrb'ßen means of a number of adjacent scan lines that form portions of the characters, said character graphic quality can be composed of a given number of scan lines predetermined distance, characterized by means coupled to the imager first means (94) for reducing the number of scan lines to produce characters of proof quality; as well as a second arrangement (73, 113) coupled to the image generator for increasing the distance between the scan lines in the proof marks such that corresponding symbols of the same point size of graphic quality on the one hand and proof of quality on the other hand occupy the same area. 2. Device according to claim 1, characterized by a memory (50) coupled to the imager and having a number of Memory cells for storing encrypted representations of the scan lines, each of these encrypted representations being one of the character segments is equivalent to. 3. Device according to claim 2, characterized by an arrangement (69, 101, 103, IO9) coupled to the memory for pale non-consecutive but periodic encrypted representations of the character sections, such that the number of the character sections below Formation of a mark of proof quality is reduced. Device according to Claim 1, characterized by a counter (94) for counting elementary distances between adjacent scanning lines of a character for the purpose of determining the point size of the character. 5. Device according to claim 1, characterized by a multiple input scan line position control counter (94), the output counts supply, which are equal increasing powers of the supplied input pulses; and by an arrangement (100) for converting them Output counts into position signals through which the neighboring scan lines in the picture zoozer on intermediate values determined by the output count values 909836/1068 line spacing can be set. 6. Device according to claim 5, characterized by means (59) for selectively inputting input pulses to an input of said scan line position control counter which has an output count this provides input pulses such that adjacent scan lines in the imager are set to an interline spacing which Signs of either proof quality or high graphic quality results. 9098 36/1068 Ti . Blank page