KR920002603B1 - Multi-screen video printer apparatus - Google Patents

Abstract

The printer unit includes a decoder (12), an A/D converting section (14), a picture memory (16) and a recorder (28). Further, a memory selecting section (34) selects the number of pictures to be printed in a single sheet of paper, and a sampling control section (32) outputs sampling pulses to the A/D converting section (14), so that video data for the required number of pictures can be stored in the picture memory (16). A memory control section (30) outputs sampling control signals to the sampling control section (32), and supplies write addresses to the picture memory (32). The invention expands the function of the printer.

Description

Multi-screen video printer device

1 is a block diagram of a conventional video printer apparatus.

2 is a block diagram of a video printer apparatus according to the present invention.

3 is a detailed circuit diagram of an embodiment of the sampling control unit shown in FIG.

4 is a printing example for explaining FIG. 2 and FIG. 3, an example of sampling of an image screen, and an arrangement of n screens in a memory.

5 is a flowchart for explaining the operations of FIG. 2 and FIG.

6 is an operating waveform diagram of FIG.

* Explanation of symbols for main parts of the drawings

12: decoder 14: A / D converter

16: image memory 20: print control unit

22: memory selection switch 24: line memory

26 control unit 28 recording unit

30: memory controller 32: sampling controller

34: multi-screen selector 38, 40: first and second preset down counter

42: pulse generator 44: V. C. O.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video printer apparatus for printing and outputting video signal inputs, and more particularly, to a multi-screen video printer apparatus capable of printing a predetermined number of n screens on one sheet of recording paper.

In general, a video printer refers to an apparatus for converting an image signal into a digital signal, storing the image signal in a memory such as a field memory or a frame memory, and accessing the same to print an image.

Such a video printer apparatus needs to record the image signal by the instantaneous capture of the image signal or to print the recorded image reproduced on the monitor through a recording apparatus such as a still camera. In response, the trend is gradually developing.

FIG. 1 is a block diagram of a conventional video printer apparatus. The decoder 12 decodes an input video signal CVS and converts it into an RGB signal and a synchronization signal CSS. The RGB signal is predetermined by a predetermined sampling clock. An A / D converter 14 for converting and outputting each bit into digital data, an image memory 16 for storing and accessing output data of the A / D converter 14 under predetermined control, and the decoder The sampling pulse SAMP is supplied to the A / D converter 14 by inputting the synchronization signal CSS and the memory command signal M of (12), and the write address WAS: A memory control unit 18 for inputting a write address signal, a memory selection switch 22 for vertically selecting and outputting data output from the image memory 16 by a predetermined switching control, and the memory selection switch ( The output data of 22) is controlled by predetermined control The line memory 24 and the RGB outputs of the line memory 24 are sequentially converted to YMC (Yellow, Mayenta, Cyan) color signals, and the density change due to the correlation between the characteristics of the recording paper and the heat generation amount of the head. A control unit 26 for outputting heat data to the recording head of the recording unit in the YMC three-color order after performing gamma correction for reducing the influence, resistance correction for reducing the deviation of the heating element resistance of the recording head, and the control unit 26. A recording unit 28 for inputting and printing the recording heat generation data of the data; and a lead address RAS to the image memory 16 by the print command input P, and a selection control signal to the memory selection switch 22; And a print control unit 20 for inputting (SS) and providing a read / write address to the line memory 24 to control printing.

[Gamma] correction, resistance correction and the like of the control unit 26 in the configuration as shown in FIG. 1 are described in detail in the video hard copy technology issued on November 23, 1988 by NHK Engineering Service, a Japanese corporation.

When the image signal CVS is input to the circuit as shown in FIG. 1, the decoder 12 separates the image signal CVS into an RGB analog signal and simultaneously generates a synchronization signal CSS including a horizontal and vertical synchronization signal. Decoded output.

At this time, when the memory command signal (M) is input to the memory control unit 18, the memory control unit 18 to the A / D conversion unit 14 based on the input synchronous signal (CSS) including a horizontal, vertical synchronous signal Provide a sampling pulse (SAMP). The write address signal WAS is input to the image memory 16.

The A / D converter 14 converts the input analog RGB signal into an a bit digital RGB signal by a sampling pulse SAMP of the memory controller 18 and outputs the a-bit digital RGB signal. A natural number, not a power of at least 4 bits).

The digitized RGB signal is stored (recorded) in a predetermined area in the image memory 16 by specifying a write address (WAS) of the memory controller 18. (The image signal is once written to the image memory because the speed and printing speed of the image signal are different.) Processing).

After the execution of the memory function is completed by the above-described operation, when the print command signal P is input to the print control unit 20, the print control unit 20 reads the image memory 16 read address (RAS). The write address LWAS is output to the line memory 24 and the selection signal SS is input to the memory selection switch 22.

The memory selection switch 22 for inputting the selection signal SS switches the RGB data output from the image memory 16 in response to the input selection signal SS to convert the RGB data into a vertical one-line line memory 24. To enter.

보정을 실행한다. 또 기록 헤드의 각각 발열체 저항 편차를 줄이기 위한 저항 보정 등을 수행한 후 Y.M.C의 3색 순서로 기록부 (28)헤드에 발열 데이터를 인가한다. 이때 기록부(28)는 입력되는 발열량의 데이터에 따라 프린트를 1라인씩 수행하여 1화면의 프린팅을 수행한다.In this case, the reason why the printer controller 20 outputs the selection signal SS to the memory selection switch 22 is as follows. This is because in order to record an RGB three-color light signal on a recording sheet, it must be converted to YMC three colors. Therefore, the memory selection switch 22 is controlled to convert the three-color digital data of RGB recorded in the image memory 16 into the YMC three-color, and the memory selection switch 22 enters the line memory 24 by one vertical line. Save it. Therefore, the line memory 24 records and stores the data output from the memory switch 22 according to the write / lead address (LWAS / LRAS) of the print control unit 20, and accesses and outputs them to the control unit 26. . The control unit 26 converts sequentially input RGB signals into YMC signals and at the same time attenuates the influence of density change due to the correlation between the characteristics of the recording paper and the heat generation amount of the head.

Perform the calibration. Further, after performing resistance correction or the like for reducing the deviation of the heating element resistance of each of the recording heads, the heating data is applied to the recording unit 28 heads in the order of three colors of the YMC. At this time, the recording unit 28 performs printing of one screen by printing one line according to the input heat generation data.

However, the conventional video printer apparatus as described above has the following problems by printing only one image signal or one frame in an image memory. For example, it was not possible to print several screens on one sheet of paper, such as recording of a moving picture requiring continuous operation such as a throwing ball or indexing the contents of a floppy disk, which is a recording medium of a still camera. In addition, it is difficult to capture a moving picture (moving picture) at an instant, and for recording n feeds and n frames (n is a natural number not including n0), an n-feed and n-frame image memory must be provided. There has been a problem that the system is expensive to record multiple screens.

Accordingly, an object of the present invention is to store an image signal of n feed or n frames in an image memory of one feed or one frame and to print an image of n feed or n frames on one recording sheet. The present invention provides a video printer device capable of doing so.

Another object of the present invention is a sampling control circuit for controlling the A / D conversion clock so that an image signal of n screens can be recorded in one screen image memory according to a multi-screen memory selection input for printing n screens on one recording sheet. In providing.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of a video printer according to the present invention, in which the synchronization signal CSS, the memory command signal M, and the multi-screen selection signal of the decoder 12 in the above-described configuration of FIG. ) Has an input terminal for inputting the signal, outputs a sampling control circuit (SES) by input of the multi-screen selection signal (MSS) and a memory command signal (M), and according to a clock by the sampling control A memory controller 30 for generating the write address WAS of 16, a multi-screen memory selector 34 for providing the memory controller 30 with a multi-screen selection signal MSS by a predetermined selection; The synchronization signal CSS of the decoder 12 is input and the vertical and horizontal synchronization VS of the synchronization signal CSS are counted by the sampling control signal SES of the memory controller 30. The A / D converter 14 and the memory controller The configuration, reference numerals, and symbols other than those of the sampling control unit 32 outputted to 30) newly connected are the same as in FIG.

3 is a detailed circuit diagram of the sampling controller 32 and the multi-screen memory selector 34 of FIG.

In the drawings, HS and VS denote horizontal and vertical synchronization signals, which are output by separating the synchronization signal CSS of the decoder 12 from the synchronization separation signal (not shown).

(이하 제2프리세트값 SES3)으로 업(up), 다운(down) 카운트하여 다화면 메모리정지 및 카운터 인에이블 신호를 각각 출력하는 기능을 수행하는 것으로 수직, 수평카운터이다.Reference numerals 36 and 38 denote preset up counters (hereinafter referred to as up counters) and first preset down counters (hereinafter referred to as first down counters), respectively, for input vertical and horizontal sync signals VS (HS). Preset value n + 1 (hereinafter referred to as first preset value SES2) and preset value

It is a vertical and horizontal counter that performs a function of outputting a multi-screen memory stop and a counter enable signal by counting up and down counts (hereinafter referred to as the second preset value SES3).

Reference numeral 40 is a second preset down counter (hereinafter referred to as a second down counter) to count down a predetermined pulse to a preset value k (hereinafter referred to as a third preset value SES4) to determine the third preset value SES4. This function outputs the VCO enable signal (VCO EN) when the count is completed.

Reference numeral 42 is a pulse generator, which generates a predetermined pulse and provides it to the second down counter 40.

Reference numeral 44 denotes a V.C.O (Voltage Controlled Oscillator) which generates a sampling pulse SAMP according to a predetermined voltage which is enabled by the V.C.O EN signal of the second down counter 40 and input.

34A is a detailed view of a portion of the multi-screen memory selector 34, and is composed of resistors R1-R5 and switches S1 to vary the input voltage of the V.C.O 44 according to the multi-screen memory selection. 46, 48, and 50 are first, second, and third preset values that are output from the memory controller 30.

In the above description, n is a natural number that does not include '0', which is defined as the number of multi-screen selection signals MSS, where n is 4 when n is a natural number 4, and n is 9 when MSS is 9.

FIG. 4 is a reference drawing for explaining FIGS. 2 and 3, and FIG. 4A is a 9-screen printing example, where P is a recording sheet. For example, when the number of screens is selected by the multi-screen memory selector 34 as nine screens, nine screens of 3x3 are printed on the recording paper P as shown in FIG. 4A. 4B shows a scanning line corresponding to one feed of an image signal such as a TV or a monitor. Fig. 4C is a layout diagram when the n (9) screen is memorized in the conventional one memory image memory capacity.

FIG. 5 is a flow chart for explaining the operation of FIG. 2 and FIG. 3, which consists of the following procedures.

First, when the screen number n is selected by the switch selection in the multi-screen memory selector 34, and the memory command signal M is input, the horizontal and vertical synchronization signals HS and VS are detected. When the input vertical sync signal VS is counted up and the n + 1 th vertical sync signal is reached, the memory is terminated and the printing function is performed by the print command signal.

의 정수배가 될때에 V.C.O(44)로 인에이블을 발생시킨다. 이때 상기 V.C.O는 1화면 프린팅을 기준으로 한 샘플링 주파수(펄스)를 1/

배로 하여 A/D 변환부(14)와 메모리제어부(30)로 출력하게 되며, 이로 인하여 상기 A/D 변환부(14)는 화면선택에 따른 샘플링 레이트 클럭에 의해 입력 R.G.B 영상신호를 디지탈로 변환한다.However, if the input vertical sync signal VS is smaller than n + 1, the horizontal sync pulse is counted.

Enable to VCO 44 when the integer multiple of. At this time, the VCO sets the sampling frequency (pulse) based on 1 screen printing to 1 /.

The A / D converter 14 and the memory controller 30 are outputted to the A / D converter 14 and the memory controller 30. Therefore, the A / D converter 14 converts the input RGB image signal into digital by a sampling rate clock according to screen selection. do.

의 샘플링 레이트 클럭(Rate Clock)을 입력하는 메모리제어부(30)는 상기 샘플링 펄스에 의해 화상메모리(16)의 라이트 어드레스(WAS)를 지정함으로써 화면선택에 따른 화상데이타가 상기 화상메모리(16)에 기억되도록 동작되는 수순으로 이루어져 있다.1 / same as above

The memory controller 30 inputs a sampling rate clock of the image memory 16 by specifying the write address WAS of the image memory 16 by the sampling pulse so that the image data according to the screen selection is transferred to the image memory 16. It is composed of procedures that are operated to be memorized.

6 is an operation waveform diagram of a part of FIGS. 2 and 3, and FIG. 6A is a sampling signal of the enable signal SES of the first down counter 38 and the up counter 36 outputted from the memory controller 30. FIG. 6b is an input vertical synchronization signal VS, and FIG. 6c is a horizontal synchronization signal HS input within one vertical synchronization period. FIG. 6D is an enlarged view of one horizontal synchronization period, which shows horizontal synchronization, burst, and video signals. FIG. 6E is the output of the pulse generator 42, and FIG. 6F is the second down counter 40. FIG. 6g is a sampling pulse SAMP output of the VCO.

An operation example of the present invention will be described below based on the above configuration.

When the video signal VS is input to the decoder 12 as described above in FIG. 1, the decoder 12 decodes the input video signal CVS to separately output the R.G.B analog signal and the synchronization signal CSS.

In the above state, if the MSS is selected as a predetermined n screen, for example, n = 9 by the switching selection of the multi-screen memory selector 34, the memory controller 30 samples the counter enable signal as shown in FIG. The first down counter 38 and the up counter 36 in the sampling control unit 32 are enabled by outputting the control signal SES.

의 값인 제2프리세트값 SES3을 제1다운카운터(38)에 프리세팅한다.The memory controller 30 also presets the first preset value SES2, which is a value of n + 1, to the up counter 36,

The second preset value SES3, which is a value of, is preset to the first down counter 38.

값 즉 제2프리세트값(SES3)로 프리세트된 제1다운카운터 (38)는 제6b도와 같이 1수직동기 기간에 입력되는 수평동기신호 HS를 다운 카운팅하기 시작한다.On the other hand, the voltage by the switching of the multi-screen selector 34a which is a part of the multi-screen memory selector 34 is applied to the voltage control terminal of the VCO 44. For example, if the sampling frequency in one screen is f, a voltage is applied so that the frequency of f is generated in the VCO 44. At this time, when the switch S1 in the multi-screen selector 34a is connected to the terminal T1, one screen is connected to the terminal T4, four screens are connected to the terminal T9, and nine screens are connected to the terminal T16. The control voltage for the 16 screens is connected to the VCO 44 by the resistance partial voltage of the resistors R1-R5. When enabled by the counter enable signal as shown in FIG. 6a, when the vertical count signal VSC obtained by incrementing the count of the up-counter 36 is input to the memory controller 30 by the up-counter 36 as shown in FIG.

The first down counter 38, which is preset to a value, that is, the second preset value SES3, starts down counting the horizontal synchronization signal HS input in one vertical synchronization period as shown in FIG. 6B.

(=3)값으로부터 다운카운팅하여 ＂0＂로 되면 제2다운카운터(40)에 인에이블신호를 출력하고 다시

로 프리세팅되어 상기한 수평동기신호를 다운카운트한다.In this case, since n is an example set to 9, the first down counter 38 is

When counting down from the value (= 3) to 0, output the enable signal to the second down counter 40 and again.

Is preset to down count the horizontal synchronization signal.

On the other hand, the up counter 36 preset to n + 1 (n = 9), that is, 10 up-counts the input vertical sync signal VS, indicating that it is n + 1 th when the 10th vertical sync signal VS is input. The control signals SDS2-SDS1 are output to the memory controller 30 to stop the memory operation. When the control signal SDS2-SDS1 indicating that the n + 1th vertical synchronous signal is input, the memory controller 30 sets the counter enable signal as high as shown in FIG. 6A, so that the first down counter 38 and the up counter ( The memory operation is terminated by stopping the counting of 36).

(여기서 n=9) 값으로부터 다운카운터로 동작하여 ＂0＂으로 되어지면 즉, 제6c도와 같이 입력되는 수평동기신호를 3개 다운카운팅 완료하면 제2다운카운터(40)를 차기의 수평동기신호가 입력될때까지 인에이블시킨다.As described above, the first down counter 38

(Where n = 9) when the value is set to " 0 ", that is, when down counting of three horizontal synchronization signals inputted as shown in FIG. 6c is completed, the second down counter 40 is set to the next horizontal synchronization signal. Enable until is entered.

)인 영상신호가 입력되는 상태이거나

×정수배(

×정수배)의 수평라인에 해당하는 수평영상신호가 입력되는 상태이다.At this time, the RGB signal output from the second diagram and the decoder 12 and input to the A / D converter 14 is a third horizontal line (as shown in FIG. 4b).

) Is input video signal or

× integer multiples (

A horizontal video signal corresponding to a horizontal line of x integer times) is input.

When the second down counter 40 enabled by the output of the first down counter 38 down counts the pulse generated from the pulse generator 42 as shown in FIG. <K Counting Outputs of Pulse Generator 42 Completed> The VCO EN signal is output to enable the VCO 44.

The reason for enabling the V.C.O 44 after counting k pulse outputs of the pulse generator 42 is that it is used to prevent digital conversion output of signals such as a synchronization signal and a burst, which were previously carried out within one horizontal synchronization signal period.

If the signal such as the synchronization signal and the burst is an example of digital conversion, the VCO 44 may be directly enabled by the output of the first down counter 38 without the second down counter 40.

When the VCO 44 is enabled as described above, the VCO 44 oscillates a sampling pulse (SAMP) of one horizontal line according to the control of the input voltage according to the resistance voltage divider output voltage of the multi-screen selection switch 34a. The pulses are provided to the A / D converter 14 and the memory controller 30 as sampling clock and address control pulses.

이 되도록 하는 제어전압이다.At this time, the control voltage applied to the VCO 44 is f / than the one-screen sampling frequency f by the selection of the multi-screen selection switch 34a.

This is the control voltage to be

(

)의 정수배의 수평라인의 영상신호를 SP11, SP12…SPnn의 샘플링 위치(Samping position)에서 샘플링하여 디지탈 변환출력한다. 이때 상기 샘플링 위치 SP11, SP12…SPnn의 간격은 전술한 다화면 스위치(34a)의 출력전압에 따라서 변화한다.Accordingly, the A / D conversion unit 14 is arranged as shown in FIG. 4B by the sampling pulse SAMP input as shown in FIG. 6G.

(

Video signals of horizontal lines of integer multiples of. Digital conversion output is performed by sampling at the sampling position of SPnn. At this time, the sampling positions SP11, SP12... The interval of SPnn changes according to the output voltage of the above-mentioned multi-screen switch 34a.

In addition, the memory controller 30 inputs the sampling pulse SAMP of the V.C.O 44 as the address control pulse ACP to provide the write address RAS of the image memory 16.

×정수배 라인으로 샘플링된 디지탈데이터가 제4c도와 같이 라이트된다. 따라서 전술한 업카운터(36)는 멀티화면 n수에 따른 수직동기를 n+1 카운트하여 기록지 1매에 프린팅될 화면수를 결정짓는 기능을 하며, 제1다운카운터(38)는 1피일드분의 영상화면중 멀티화면 n수에 따라 수평동기

으로 카운팅하여 디지탈 변환될 수평라인 및 라인수를 선택결정하여 A/D 변환될 데이터량을 조절하게 된다.Therefore, in the image memory 16, as shown in FIG.

The digital data sampled by the x integer line is written as in FIG. 4C. Therefore, the up counter 36 described above functions to determine the number of screens to be printed on one sheet of recording paper by counting n + 1 vertical synchronizations according to the number of n multi-screens, and the first down counter 38 corresponds to one feed. Horizontal synchronization according to n number of multi screens among video screens

The number of horizontal lines to be digitally converted and the number of lines to be digitally determined by counting to adjust the amount of data to be A / D converted.

×정수배의 라인)의 영상신호를 f/

의 샘플링 클럭으로 A/D변환하게 한다.[f : 1매 기록지에 1화면 프린팅시 V.C.O(44)의 샘플링 펄스 출력주파수] 다화면 선택은 1화면, 4화면, 9화면 등으로(선택화면=정수)²의 형태로 취하면 기록지 1매에 기록되는 형태도 NTSC영상의 아스펙터 비율과 같이 가로 : 세로비율이 4 : 3 정도로 할 수 있다.The VCO 44 also has a horizontal line selected by the first down counter 38 described above according to the control voltage of the multi-screen selection switch 34a.

X integer multiples of the video signal f /

[F: Sampling pulse output frequency of the VCO (44) when printing one screen on a single recording sheet.] Multi screen selection is performed by 1 screen, 4 screens, 9 screens, etc. (Integer) ^2, the aspect ratio recorded on one sheet of paper can be as high as 4: 3 in aspect ratio as the aspect ratio of NTSC image.

As described above, recording and printing of image data of multiple screens in the one-memory or one-frame image memory 16 can be performed by the operation as described in FIG.

로 하여 A/D 변환데이터의 량을 제어함으로써 1매의 기록지에 n개의 다화면을 프린팅 가능케함으로 연속적인 동화면이라든가 스틸카메라의 기록내용물 색인등을 기록가능케함으로 비디오 프린터의 기능을 확장시킬 수 있는 이점이 있다.As described above, according to the present invention, the sampling in the horizontal and vertical direction of the video signal is 1 /

By controlling the amount of A / D conversion data, it is possible to print n multiple screens on one recording paper, and to record the continuous video or the index of the recorded contents of still cameras. There is an advantage.

Claims (4)

A decoder 12 which decodes and outputs an input video signal CVS into an RGB analog signal and a synchronization signal CSS, and an A / D converter for digitalizing and outputting the RGB analog signal by sampling pulses of a predetermined frequency; 14) the image memory 16 which accesses the RGB data of the A / D conversion section 14 by predetermined control, and the RGB data stored in the image memory 16 by the predetermined selection control and access control to the vertical. A line memory means for selecting data one by one and accessing data one line at a time; converting RGB data of the line memory means into YMC and

Controlling the printing operation by controlling the image memory 16 and the line memory means by the control means for performing the correction and the recording unit 28 which receives the output of the control means and writes on the recording paper, and the print command input P. A video printer apparatus comprising: a multi-screen memory selector 34 for selecting a screen selection number n to be recorded on one recording sheet, and a synchronization signal output from the decoder 12 and sampling control signals in a predetermined state. Sampling pulses are output to the n-screen RGB analog video signal output from the decoder 12 so that the n-screen video data can be stored in the picture memory 16 which stores the RGB video data of one screen. A sampling control unit 32 generated and provided to the A / D conversion unit 14, a synchronization signal output from the decoder 12, and a screen selection number n output from the multi-screen memory selection unit 34; Force to the sample in the vertical and horizontal direction of the video signal during the sampling control unit 32 are n input video image f /

To the memory controller 30 which inputs the sampling control signals for sampling to the sampling control unit 32 and counts the sampling pulses output from the sampling control unit 32 to provide the write address of the image memory 16. Multi-screen video printer device characterized in that the configuration. 2. The memory control unit 30 according to claim 1, wherein the memory controller 30 is larger than the input screen selection number n when the memory command signal M is input while the screen selection number n output from the multi-screen memory selection unit 34 is input. 2nd preset value 2nd preset value which is the square root of 1 preset value n + 1 and screen selection number n

And a sampling control signal (SES) to the sampling control unit (32) while being provided to the sampling control unit (32). 3. The sampling control unit 32 according to claim 2, wherein the sampling control unit 32 outputs the first preset value n + 1 and the second preset value output from the memory control unit 30.

And a vertical synchronous counter 36 and a horizontal synchronous counter 38 which are preset to the sampling control signal SES output from the memory controller 30 and count the input vertical synchronous signal and the horizontal synchronous signal, respectively. And the horizontal synchronization counter 38 counts an input horizontal synchronization signal.

It is enabled at the detection output of the double horizontal synchronous signal, so that the sampling frequency f for single screen printing is f /

Of the input image screen until the vertical synchronization counter 36 counts the vertical synchronization signal of the preset number of n + 1 screens.

A multi-screen video printer device characterized by operating for sampling output of an integer multiple horizontal video signal. 4. A first preset value n + 1 and a second preset value 1 / of each of the vertical synchronization counter 36 and the horizontal synchronization counter 38, respectively.

The preset memory controller 30 enables the vertical synchronization counter 16 and the horizontal synchronization counter 38 when the memory designation signal M is inputted, and inputs a counting output of the vertical synchronization counter 36. And disabling the vertical, horizontal synchronization counter (36) when the counting value is n + 1.

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