JPH0766999A - Video signal processing unit for prompter - Google Patents

Abstract

PURPOSE:To allow a person reading an original to concentrate his attention onto the reading by storing a scroll speed of a display pattern at rehearsal and scrolling the display pattern at the stored scroll speed in the state of going on air so as to eliminate the need for the scrolling by the person reading the original when the person reads the original on air. CONSTITUTION:Information relating to a read speed of picture data read from a picture memory 22 is written in an SRAM 40 connecting to a CPU 20 when a display pattern is scrolled at program rehearsal and picture data are read from the picture memory 22 based on the information relating to the read speed to be stored at going on air and the display pattern is scrolled at on air at the same speed as that at rehearsal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prompter for displaying a manuscript to be read by a newscaster by a manuscript shooting camera and displaying it on a display unit, and scrolling the displayed contents according to the reading speed of the newscaster. More specifically, the present invention relates to a video signal processing device for a prompter that temporarily stores a video signal output from a document camera as image data in an image memory and outputs the image data from the image memory at a predetermined timing. It is a thing.

[0002]

2. Description of the Related Art In a news program of a television station, a video signal of a prompter which projects a manuscript read by a newscaster in front of a television camera so that the newscaster can read the contents of the manuscript while watching the direction of the television camera. Processing devices are known.

As a video signal processing device of this type of prompter, conventionally, for example, as shown in FIG. 10, a document camera 4 for photographing a document 2 and a cathode ray tube system for displaying a document based on a video signal from the document camera 4. Television 6
And a half mirror 8 which is arranged in front of the television camera 10 and reflects an image on the television 6 so that the newscaster 9 can be seen, a video signal of such a prompter is known. In the processing device, the original must be replaced by a third party according to the speed at which the newscaster reads the original, and the replacement timing is difficult.

Further, as shown in FIG. 11, for example, two original cameras are used, and the originals displayed on the television 6 are switched by alternately switching these original cameras. Even in this case, it is necessary for a third party to replace the original on the platen, and it is difficult to replace the original.

Further, as shown in FIG. 12, there is a document in which a document is photographed by a document camera while winding a long document by a motor and the document is scrolled up and down or left and right. There is a problem in that it takes time and effort to create a full-sized original, and the originals cannot be switched and displayed one by one.

In order to solve such a problem, a video signal output from a document photographing camera is temporarily stored in an image memory as digital image data and is read at a predetermined reading (scrolling) speed based on a switch operation of a newscaster. A video signal processing device of a prompter, which reads out image data from the image memory and displays the converted analog video signal on the TV screen, has been developed by the applicant and has already been filed. (Japanese Patent Application No. 4-23
6026 specification).

According to this video signal processing device of the prompter, the newscaster can freely control the feeding of the document on the display unit according to the reading speed of the document, without bothering a third party. It is possible to solve the problems of the prior art.

[0008]

However, in the video signal processing device of this prompter, the newscaster must read out the original while looking at the television screen, and at the same time, read out the image data (scrolling operation). .

This operation must be performed by groping or groping with the face facing the front. Even though it is a simple operation of dials, levers, buttons, etc., the newscaster may not concentrate on reading the original. There is.

The present invention has been made in view of the above circumstances, and it is possible to easily control the feeding of a document displayed on the image display section without the help of a third party, and at the same time, at the time of production, the document can be controlled. It is an object of the present invention to provide a video signal processing device of a prompter in which the person who reads the audio does not need to adjust the speed of reading the image data at all.

[0011]

A prompter video signal processing apparatus according to the present invention operates at a speed of reading original image data from an image memory, which is operated in accordance with an original reading speed of a newscaster at the time of rehearsal or the like. Data related to the scroll speed of the screen document) is stored in a predetermined memory, and the document image data is read from the image memory according to the data related to the read speed stored in the memory at the time of actual production of the program, at the time of rehearsal. By tracing the scrolling state of the screen document at the time of production, the reading operation of the image data by the person reading the document at the time of production is omitted.

That is, a document photographing camera for photographing a document and outputting a video signal, and a position in front of the television camera where the document can be viewed by a document reader, are displayed. Display means for displaying the contents of the manuscript,
An image memory for storing a plurality of screens of image data obtained by digitally converting the video signal, an operation unit for instructing writing and reading of the image data to and from the image memory, and an operation unit for operating the operation unit to access the image memory. A first control unit for controlling writing of the image data, and at the time of reading the first image data, reading the image data from the image memory and displaying the image data to the display unit based on an operation of the operation unit. A second control unit for controlling the sending of the image data, and a speed data storage unit for storing data relating to the read speed of the image data at the time of reading the first image data,
A third control for controlling the reading of the image data from the image memory and the sending of the image data to the display means based on the speed data stored in the speed data storage unit when the second image data is read. And a section.

The first to third control units may be independently configured, or two or three may be combined.

The reading of the second image data is a timing after the reading of the first image data, and the reading of the first image data is, for example, a rehearsal of a news program. The time of reading the second image data is, for example, the time of production of a news program.

[0015]

According to the above construction, after converting the video signal of the document output from the document shooting camera into digital image data, the image signal is temporarily stored in the image memory, and when the first image data is read, the document reading is performed. A person (news caster) operates the operation unit to read out this image data at any timing and scroll the document on the display unit. As a result, the manuscript reader can set the scroll speed of the screen manuscript at a speed that he or she can easily read (with a proper interval or speedy reading) without disturbing a third party.

Further, since the speed data storage section for storing the data relating to the read speed of the image data at the time of reading the first image data is provided, the scroll speed of the screen document is set at the time of the rehearsal and is set at that time. The speed value can be sequentially stored in the speed data storage unit, and the image data is read out based on the stored speed data without operating the operation unit when reading the second image data, and the screen is displayed on the display unit. Since the manuscript is scrolled, the screen manuscript can be scrolled at the same speed as the scroll speed at the time of rehearsal without the manipulating of the manipulating section by the man reading the manuscript at the time of production of the program.

This allows the document reader to concentrate on reading the document at the time of production.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

That is, the manuscript reader such as the newscaster displays the manuscript on the prompter at the time of rehearsal and scrolls the displayed contents in accordance with his / her favorite reading speed. This scroll speed that changes subtly at this time is stored as information in the storage section in this device, and based on the stored scroll speed, the original is automatically prompted at the same scroll speed as during this rehearsal during the production of the program. Is displayed.

FIG. 1 is a block diagram showing a video signal processing device of a prompter according to an embodiment of the present invention, and FIG. 2 is an external view thereof.

In FIG. 1, a video input terminal 12 is connected to a video output terminal (not shown) of a document camera so that a video signal representing a document imaged by the document camera is added. The video signal input from the video input terminal 12 is added to the A / D converter 14 and the sync separation circuit 16.

The sync separation circuit 16 separates the sync signal from the input video signal and outputs the sync signal to the timing generator 18. The timing generator 18 outputs various timing signals at the time of recording the video signal to each circuit in synchronization with the synchronization signal added from the synchronization separation circuit 16, and also a central processing unit (CPU) 20 as described later.
Various timing signals at the time of reading the image data are output to each circuit in synchronization with the synchronization signal added from the.

The A / D converter 14 converts the input video signal into digital image data and outputs it to the image memory 22.

The image memory 22 can store, for example, image data of a screen for 46 pages, and writing and reading of the image data are controlled based on signals applied from the timing generator 18 and the address decoder 24. The details of the writing and reading control of the image data in the image memory 22 will be described later.

The image data read from the image memory 22 is converted into an analog video signal by the D / A converter 26, amplified by the video amplifier 28, and then output by the video output terminal 29.
Is output from. This video output terminal 29 is, for example, shown in FIG.
A document connected to the television 6 shown in FIG. 1 and displayed on the screen of the television 6 is projected in front of the television camera 10 via the half mirror 8.

Further, the SRAM 40 connected to the CPU 20 shows a characteristic configuration of the present invention, in which information concerning the read speed of the image data read from the image memory 22 at the time of rehearsal is written, and at the time of production,
Image data is read from the image memory 22 based on the recorded information relating to the read speed.
Writing the information to this SRAM 40 and this SRAM
Details of reading the information from 40 will be described later.

Next, the writing and reading control of the image data in the image memory 22 during the rehearsal will be described.

First, various switches in the operation unit 30 will be described with reference to FIG. In the figure, a switch 30A is a clear switch for erasing the stored contents of the image memory 22, and a switch 30B is a start switch for returning the image data to be read back to the image data of the original document initially stored. The switch 31 is a writing switch that is operated when the image data of the original is stored in the image memory 22, and every time the writing switch 31 is operated, one screen of image data is sequentially stored in the image memory 22.

On the other hand, the switches 32A, 32B and 32C are switches for selecting the display method of the original, and the switch 32A is selected when the original is scrolled up and down.
32B is selected when scrolling the document left and right, and switch 32C is selected when feeding the document one by one. The switch 32D is a switch for instructing the movement and switching of the screen by the display method selected by any of the switches 32A, 32B and 32C. Also, switch 33
Is a dial switch for setting the moving speed of the original when scrolling the original vertically or horizontally, and the information of the moving speed set at this time is the SR described above.
It is stored in AM40.

The trace switch 37 is for scrolling the screen displayed on the prompter at the time of production at the same speed as the original moving speed at the time of rehearsal, and the stop switch 38 is for scrolling during this production. It is for stopping and starting an interrupt operation.

The switch 34 is an editing switch used when the order of the originals sequentially written by the writing switch 31 is changed before reading the original for rehearsal. Number (A1,
By operating the switch group 35 corresponding to A2, ..., D9, D10) in a desired order, the order of the originals can be changed.

Not-shown LEDs are arranged on the key tops of the switches, and these LEDs are turned on / off.
The switch operation can be confirmed by turning it off.

Next, at the time of rehearsal, the image memory 22
A case where image data of a plurality of originals (a plurality of frames) is stored in will be described. In this case, write switch
By pressing 30A, one frame of image data showing the original being photographed by the original camera is stored in the image memory 22. In this way, image data for a plurality of frames showing all originals to be displayed on the prompter is stored in the image memory 22 in advance.

Next, the read control of the image data for a plurality of frames stored in the image memory 22 will be described.

First, by depressing the start switch 30B, the address for reading the image data from the image memory 22 is returned to the address of the storage section in which the image data of the original document stored first is stored, and the switches 32A, 32B and 32C are set. To select the display method of the original.

Here, when the document is scrolled up and down (FIG. 3A), the switch 32A is pressed to select the up and down scroll. When the left side of the switch 32D is pressed, the CPU 20 sequentially changes the address signal through the address decoder 24 so that the original moves upward, and outputs it to the image memory 22. From the image memory 22, the address signal is designated. The image data in the storage area is read and the original is displayed so as to move upward. On the other hand, when the right side of the switch 32D is pressed, the document is displayed so as to move downward, contrary to the above.

Similarly, when the document is scrolled in the left / right direction (FIG. 3 (B)), the switch 32B is pressed to select the left / right scroll. When the left side of the switch 32D is pressed, the CPU 20 sequentially changes the address signal through the address decoder 24 so that the document moves to the left and outputs the image signal to the image memory 22, and the image memory 22 specifies the address signal. The image data in the stored storage area is read and the document is displayed so as to move to the left. on the other hand,
When the right side of the switch 32D is pressed, the document is displayed so as to move to the right, contrary to the above. The vertical scroll is applied to a horizontally written document, and the left and right scroll is applied to a vertically written document.

When the originals are switched one by one and sent (FIG. 3C), the switch 32C is pressed. Then, if you push the left side of the switch 32D by one push, the CPU
The image memory 20 changes the address signal via the address decoder 24 so that the original is switched to the original on the next page.
The image data of the storage area designated by the address signal is read out from the image memory 22, and the original of the next page is switched and displayed. On the other hand, if the right side of the switch 32D is pushed one time, the document of the previous page is switched and displayed contrary to the above.

It should be noted that, as described above, by appropriately changing the order of the originals using the edit switch 34 or the like, as shown in FIG.
A display like (D) can be made. Of course, it is also possible to scroll the originals in this exchanged order up and down or left and right.

By the way, as described above, the moving speed of the screen original moved by the scroll operation during the rehearsal is represented by the change of the address data for reading the image memory with respect to the elapsed time, and the change of the address data at this time is shown. It is stored in the SRAM 40.

That is, the address data corresponding to the image data representing the contents of the original stored in the image memory 22 is
When the address data is written in the table as shown in FIG. 4 and the image data is read from the CPU 20 at the time of reading the image data, the address position in the image memory 22 corresponding to the inputted address data is set. The written image data is output from the video output terminal 29 via the D / A converter 26 and the video amplifier 28.

At this time, the address data input to the image memory 22 is also input to the SRAM 40 at the same time. The input address data is written in the table as shown in FIG. 5 so as to correspond to the elapsed time and address counter address. However, in this embodiment, not all the address data input in the image memory 22 is written in the SRAM 40, but the image displayed on the leftmost and topmost portions of the display screen updated every 1/30 seconds. Only the address data corresponding to the data is written in the SRAM 40 table.

That is, the display screen is switched every 1/30 seconds in response to the update of the address counter address, and the display screen at every 1/30 seconds is gradually changed to the next screen portion. A scroll operation as shown in 3 (B) is performed. As shown in FIG. 4, image data for seven screens (data for the 21st to 262th horizontal lines excluding the vertical blanking period) is written in the image memory 22, and the address of the same line on each screen is It is a serial number. In addition, the image data for one line of one screen is 365
The image data for one line of 7 screens is 2555,
After all, the image data for all the lines of 7 screens is 618310.

In the above example, since the display screen is scrolled to the left and right, the address of the leftmost and uppermost image data of the display screen at each timing, which is written in the address data column of the right column of the table in FIG. Becomes address data (0 to 2190) of the 21st horizontal line.

For example, according to the example shown in FIG. 5, address 0 is written up to the address 2 of the address counter and address 1 is written up to the address 4 of the address counter. Similarly, the address data is sequentially written in the address data column of each address counter. Is written. That is, the first screen is displayed from the start until 2/30 seconds, then the leftmost pixel row of the first screen is removed from the display screen until 4/30 seconds, and the leftmost pixel row of the second screen is displayed. Is scrolled so that is displayed at the right end of the display screen.

The last 2/30 of the scroll operation period
Seconds, that is, the addresses 2190 are written in the addresses 8999 and 9000 of the address counter, and the entire 7th screen is displayed on the display screen at the end of the scroll operation.

In the image data reading operation at the time of production which is started when the trace switch 37 is pressed, the SRAM 40
Based on the address data written in the address data column of the table, the address data is input from the address decoder 24 to the image memory 22 at the same speed as during the rehearsal, and the image data is output as video at the same speed as during the rehearsal. It is output from the terminal 29, and the scroll operation of the display screen is performed at the same moving speed as during rehearsal.

Next, the operation of writing address data to the SRAM 40 at the time of rehearsal and the operation of reading address data from the SRAM 40 at the time of production will be described with reference to the flowcharts shown in FIGS. 6 and 7.

That is, in the image data writing operation at the time of rehearsal, as shown in FIG. 6, first, the address counter is initially set to 1 (S11). Next, it is determined whether or not it is the vertical blanking period (S12), and if it is not the vertical blanking period, the process waits until the vertical blanking period is reached.

On the other hand, during the vertical blanking period, it is judged whether or not the value of the moving speed set by the speed volume switch 33 in the scroll operation exceeds the value of the predetermined counter (S13). The address data is incremented and the value of this counter is set to 0 (S14). On the other hand, if the volume value is greater than or equal to the counter value, the count value is incremented (S15).

By this operation, the scroll speed is controlled and determined.

Next, the address data is written corresponding to the predetermined address of the address counter of the SRAM 40 (S1
6). Further, the address counter is incremented (S17), and it is determined whether or not the trace operation is completed (S18). The judgment of the end of the trace operation is made depending on whether the address of the address counter is 9000 or not. If it is judged that the trace operation has not ended yet, the operation returns to the above step S12, and if it is judged that the trace operation has ended, SR
The operation of writing the address data to the AM40 is completed.

Next, referring to FIG. 7, SRA at the time of production
An operation of reading address data from M40 will be described. In this read operation, the address counter is initially set to 1 (S21). Next, it is determined whether or not it is the vertical blanking period (S22), and if it is not the vertical blanking period, the process waits until the vertical blanking period is reached.

On the other hand, in the vertical blanking period, the address data of the SRAM 40 is set in the address decoder (S23) to read the address data, and the image data in the image memory 22 is read. Next, the address counter is incremented (S24), and it is determined whether or not an emergency interrupt has occurred (S25). When the CPU 20 detects that the stop switch 38 has been pressed and determines that an emergency interrupt has been issued, the read operation of this address data is stopped and the interrupt operation is started.

This emergency interruption is used, for example, when an unscheduled news occurs at the time of rehearsal, when the manuscript of this news is read by a manual prompter, and as described above, the stop switch 38 is pressed. Made by.

On the other hand, if it is determined that the emergency interrupt has not occurred, it is determined whether or not the trace operation has been completed (S26). The judgment of the end of the trace operation is made based on whether or not the address of the address counter is 9000, as in the write operation of the address data described above. If it is determined that the trace operation has not been completed, the operation returns to S22, and if it is determined that the trace operation has been completed, the address data read operation is completed.

Next, the flowchart of FIG. 8 will be described. This is a function that the CPU 20 performs during the horizontal blanking period. First, the current read address is
262 Whether or not it is a horizontal line is determined (S31), and the 21st
~ 262 The address decoder does not change unless it is a horizontal line. If it is the 21st to 262nd horizontal lines, a value obtained by adding 2555 to the current read address is set as a new read address (S32), and this address is set in the address decoder (S33).

When the horizontal blanking signal is in the H level period, the address is sequentially incremented by hardware using a clock having a frequency twice that of the subcarrier. This allows the screen to be displayed.

The prompter video signal processing apparatus according to the present invention is not limited to the above-described embodiment, and for example, the number of screens stored in the image memory is set to any plural screens other than seven screens. Is possible
Further, it is possible to use various types of data as the speed data written in the SRAM.

FIG. 9 shows the NTSC in this case.
4 is a timing chart of signals, vertical blanking signals, and horizontal blanking signals.

By connecting the video input terminal 12 and the liquid crystal monitor 36, the original can be confirmed on the liquid crystal monitor 36 when the image data of the original is stored in the image memory 22, and the video output can be performed. By connecting the terminal 29 and the liquid crystal monitor 36, the original to be displayed on the prompter can be confirmed in advance.

Further, by providing a remote control transmitter / receiver corresponding to the switch 32D, the newscaster can control the feeding of the original while reading the original.

[0063]

As described above, according to the video signal processing device of the prompter of the present invention, the scroll speed of the screen original is set at the time of rehearsal of the program, and the speed value set at that time is sequentially stored in the speed data. It is possible to read the image data based on the stored speed data and scroll the screen original on the display unit without the operation of the operation unit by the person reading the original at the time of production. The reader can concentrate on reading the manuscript.

[Brief description of drawings]

FIG. 1 is a block diagram showing a video signal processing device of a prompter according to an embodiment of the present invention.

FIG. 2 is an external view of the video signal processing device shown in FIG.

FIG. 3 is a diagram showing a display mode of a document displayed by a video signal processing device of a prompter according to the present invention.

FIG. 4 is a schematic diagram showing a table in which address data corresponding to image data stored in the image memory shown in FIG. 1 is stored.

5 is a schematic diagram showing a table storing address data in the SRAM shown in FIG.

FIG. 6 is a flowchart showing an address data writing operation of the device according to the embodiment of the present invention.

FIG. 7 is a flow chart showing an address data read operation of the device of the embodiment of the present invention.

FIG. 8 is a flowchart showing an interrupt operation of the device according to the embodiment of the present invention.

FIG. 9 is an NTS used in an apparatus according to an embodiment of the present invention.
Time chart of C signal, vertical blanking signal and horizontal blanking signal

FIG. 10 is a schematic diagram showing the overall configuration of a conventional prompter.

FIG. 11 is a schematic view showing a case where two document cameras are used in a conventional prompter.

FIG. 12 is a schematic diagram showing a case where a document is scrolled in a conventional prompter.

[Explanation of symbols]

 2 Original 4 Original camera 6 Television 8 Half mirror 10 Television camera 14 A / D converter 18 Timing generator 20 CPU 22 Image memory 24 Address decoder 26 D / A converter 30 Operating part 37 Trace switch 38 Stop switch 40 SRAM

Claims (1)

[Claims] 1. A document photographing camera for photographing a document and outputting a video signal, and a position in front of the television camera where a document reader can see the display contents. Display means for displaying the contents of the document, image memory for storing image data obtained by digitally converting the video signal for a plurality of screens, operation section for instructing writing and reading of image data to and from the image memory, and the operation section A first control unit that controls writing of image data to the image memory based on an operation of the image memory; and a first control unit that controls image data from the image memory based on an operation of the operation unit when reading the first image data. A second control unit for controlling reading and sending of the image data to the display unit; and data concerning a reading speed of the image data at the time of reading the first image data. A speed data storage section to store the second image data, and at the time of reading the second image data, based on the speed data stored in the speed data storage section, the image data is read from the image memory and the image data is displayed on the display means. A prompter video signal processing device comprising a third control unit for controlling transmission.