JPH03108885A - Title generating device - Google Patents

Abstract

PURPOSE:To generate a desired title by writing a title picture data synthesized by a data synthesis means in to a memory, reading the title picture data from the memory and inserting the data to an optional position of a video signal outputted from an image pickup device section. CONSTITUTION:Picture data f1-f8 read from a memory 50 for a data readout period R1 are sent to a latch circuit 65, which is latched by a 2nd latch pulse (g). Then a data resulting synthesizing the picture data f1-f8 written in advance with a character symbol data (b) extracted from a character generator 40 is written in the memory 50. The synthesized data j1-j8 stored in the memory 50 are read and converted into a serial data (j) by a shift register 60. Then an adder 25 synthesizes it with a video signal inputted from an electric signal processing circuit 22 and the result is inputted to a VTR section 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a title creation device that combines information signals such as text with video signals and records them on a storage medium in a recording/playback device such as a camera-integrated VTR. Regarding.

[Prior Art] A title creation device provided in a conventional camera-integrated VTR will be described.

FIG. 6 shows a first conventional example of a camera-integrated VTR (100
) is a block circuit diagram showing the configuration of. In the figure,
(1) is a system control unit, (2) is an imaging device unit that images a subject, converts the captured subject image into an electrical signal and outputs it, and (3) is a video signal output from the imaging device unit (2). This is a rotary head type magnetic recording/reproducing unit (hereinafter referred to as rVTR unit) that records and reproduces information on a magnetic tape.

The system/control unit (1) is a circuit block that controls the operation of the entire system, and controls various systems by obtaining information from various sensors (11) and various operation switches (12) such as a start/stop switch and a playback key. signal(
14) brings the system into a predetermined operating state, and displays various operations using various display devices (13).

The imaging device section (2) is composed of an imaging section (21), an electrical signal processing circuit (22), a synchronization signal generation circuit (23), a title creation circuit (24), and an addition circuit (25). , a title creation circuit (24), and an addition circuit (25) constitute a title insertion circuit (20).

When performing normal photography, an image capturing section (21) forms an image of a subject through a lens on a charge storage section of an image capturing device such as a CCD. The object image formed on this charge storage section is scanned by a signal from a synchronization signal generation circuit (23) and read out in the form of a temporally continuous electrical signal. This read electrical signal is converted into a normal television signal by an electrical signal processing circuit (22), and this television signal is output from the imaging device section (2) via an adding circuit (25). .

When it is desired to superimpose text or the like on a subject image, the text or the like to be superimposed is first imaged through a lens, and this image is converted into an electrical signal and then stored in the memory in the title creation circuit (24). Next, while photographing the subject you want to photograph, a synchronization signal generator (23
), the previously stored information signals such as characters are read out from the memory in the title creation circuit (24), and the read out information signals are sent to the electric signal processing circuit (25) by the adder (25). 22), and a signal on which information signals such as characters are superimposed is output from the imaging device section (2).

On the other hand, the VTR section (3) includes a video signal recording circuit (31),
Video signal reproduction circuit (32), drum control circuit (33),
It is composed of a capstan control circuit (34), etc., and the television signal output from the imaging device section (2) is converted into an FM modulation signal by the video signal recording circuit (31), and the recording/reproduction switch ( 35) and a rotary transformer (not shown) to a rotating magnetic head (36), and is recorded on a magnetic tape by the head (36). The drum rotation control circuit (33) is connected to the drum motor (3
The capstan control circuit (34) drives the capstan motor to control the magnetic tape speed to a predetermined speed.

FIG. 7 is a block circuit diagram showing an example of the configuration of the title creation circuit (24), where (50) is a memory into which binarized image data is written, (51) is an oscillation circuit, and (52) is a write/read circuit. The circuit generates various clocks and timing signals from the reference clock input from the oscillation circuit (51), and also controls writing of data to and reading of data from the memory (50). (54) is an A/D converter, (55),
(60) is a register, and (56) is a latch circuit.

Next, the operation of the title insertion circuit (20) will be explained.

The luminance signal Y of the subject image is input to the input terminal (53) from the electrical signal processing circuit (22). This luminance signal Y is binarized by the A/D converter (54), and the shift register (
55). The shift register (55) converts the binarized data into serial/parallel data in units of 8 bits, and this parallel output is sent to the latch circuit using a timing signal every 8 bits sent from the write/read circuit (52). (56), and the output of this latch circuit (5B) is sent to the memory (50).

The write/read circuit (52) has an input terminal (57)
control signal (14) from the system control unit (1) via
is input, a write command or a read command is given by this control signal (14), and writing to or reading from the memory (50) is controlled. Further, synchronization signals corresponding to the vertical synchronization signal VS and the horizontal synchronization signal H3 are inputted from the synchronization signal generation circuit (23) via the input terminal (58) and the input terminal (59), and these synchronization signals cause the memory (50 ) are reset, the vertical and horizontal counters (not shown) for addressing the memory (50) are reset, and the address control in the vertical and horizontal directions of the memory (50) is performed, and the output data of the latch circuit (56) is
Data is sequentially written in 8-bit units to predetermined addresses on the memory (50) by control signals from the write/read circuit (52).

Next, the control signal (1
4), when a read command is given to the write/read circuit (52), the write/read circuit (52)
) The image data written in the memory (50) is read out under address control from the register (60).
The signal is parallel-to-serial converted and sent to the adder (25) via the output terminal (61).

FIG. 8 is a block circuit diagram of a second conventional example. In the figure, (40) is a character generator that generates characters, symbols, etc. in the form of image signals by manual operation keys (not shown).
The generator (40) constitutes a title insertion circuit (20).

Next, the operation that is different from the first conventional example will be explained. The position of characters, symbols, etc. on the screen is determined by synchronizing with the synchronization signal from the synchronization signal generation circuit (23). In the adder (25), a character generator (40
) is superimposed on the television signal output from the electrical signal processing circuit (22), and this superimposed signal is supplied to the rotating magnetic head (36) via the video signal recording circuit (31) and switch (35). and are recorded on longitudinally inclined tracks on magnetic tape.

As is well known, the first and second conventional examples are generally used as a means for inserting a title into a video signal, and the first conventional example is a means for inserting a title into a video signal. Taking advantage of the fact that title information can be easily stored by photographing, the second conventional example obtains title information by arbitrarily reading out character/symbol data previously written in ROM in the character generator (40). It has the advantage of being able to

The latter method requires a large number of operation keys, as it is necessary to arbitrarily read out various character and symbol data stored in the ROM.
TR is commercialized as a detachable accessory.

[Problems to be Solved by the Invention] Since the conventional title creation device is configured as described above, there are the following problems when superimposing title images.

Although the first conventional example has the advantage of being able to easily obtain a title image by photographing a subject such as a handwritten title image using the imaging device section (2), If you wanted to type in fonts, you would have to paste the printed characters onto a Thai/le image, which would then be photographed, which was a complicated process.

In addition, in the second conventional example, data such as various letters, numbers, symbols, etc. are written in advance in the ROM in the character generator (40) in predetermined fonts, so it is easy to select the necessary characters by key operation.・Since it is possible to read out numbers and symbols, it has the advantage of easily superimposing a title on the video signal, but since it can only read out the characters, numbers, symbols, etc. that have been written in the ROM in advance,
The drawback was that hand-drawn pictures etc. could not be used as titles.

This invention was made with the aim of solving the above-mentioned problems, and it is possible to easily insert a title consisting of a photographed image and characters/symbols extracted from a character generator, either alone or in combination. The purpose of the present invention is to obtain a title creation device that can.

[Means for Solving the Problems] A title creation device according to the present invention includes means for writing photographed image data into a memory, and a character/symbol data generation device having a built-in ROM that stores pattern information such as characters. , comprising data synthesis means for synthesizing the character/symbol data extracted from the character/symbol data generator and the image data read from the memory, and means for writing the synthesized data into the memory. It is characterized by

[Operation] The data synthesizing means in the present invention combines image data read from the screen in which image data extracted from the captured video signal is written, and characters/symbols extracted from the character/symbol data generator. The data is combined with symbol data and written into the memory.

Therefore, desired data among photographed image data, character/symbol data retrieved from the character generator, and data synthesized from these data can be written into the memory, and the written data is stored as a title image on the recording medium. Can be recorded.

[Embodiment of the Invention] FIG. 1 is a block circuit diagram of an embodiment of the invention.
Components that are the same as those in the figures and FIG.

In the figure, (z6) is a title creation circuit, which constitutes a title insertion circuit (20) with an addition circuit (25) and a character generator (40). It is connected to the generator (40) by a cable (200).

FIG. 2 is a block circuit diagram showing an example of the configuration of the title generation circuit (26) of this embodiment. Components that are the same as those in FIG.

In the figure, (62) and (83) are signal input terminals, (
84) is a switch circuit, (65) is a latch circuit, (6
B) is an OR circuit.

Next, the differences in the operation of this embodiment from the first and second conventional examples shown in FIGS. 6 to 8 will be explained.

The image data binarized by the A/D converter (54) is input to one input of the switch circuit (64), and the character generator ( 40) Binarized characters extracted from
Data such as symbols are input.

FIG. 3 is a block circuit diagram of a configuration example of the character generator (40), in which (70) is an oscillation circuit that generates a reference clock, and (71) is a display control circuit, which performs various operations (not shown). A character code string is created by receiving key input from the key. (72) is a readout control circuit that connects the camera-integrated VTR (100) to the input terminal (73).
(vertical synchronization signal SV and horizontal synchronization signal S input via The 0 display character RoM (75) that creates the signal is connected to the readout control circuit (75).
2) Various character/symbol data stored in the ROM are sequentially read out and sent out according to the readout control signal. The character/symbol data string sent from this display character ROM (75) is converted from parallel to serial by a shift register (76), and then sent from the output terminal (77) via a cable (not shown) to the camera integrated V T R(
100). Display character ROM (75
) is shown in FIG. 4.

The switch circuit (84) converts image data manually input from the A/D converter (54) or the input terminal ( 63) and selects and transmits the input character/symbol data. The binary data selected by the switch circuit (114) is serial-parallel converted by the shift register (55) and latch circuit (56), and the serial-parallel converted data is sent to the OR circuit (6B). . The OR circuit (66) is a latch circuit (56) when the control signal (14) is a signal instructing to write the image data output from the A/D converter (54) into the memory (50). The control signal (14) outputs character/symbol data outputted from the character generator (40) inputted from the input terminal (63) as it is, and stores the character/symbol data in advance in the memory (50). If it is a signal that instructs to write by combining with the image data that exists, the output data of the latch circuit (56) and the output data of the latch circuit (65) are ORed.
Output logical data.

Control of writing and reading data to the memory (50) is as follows:
The write/read circuit (5
2).

When capturing a handwritten title image using the imaging device section (2) and writing it into the memory (50), the OR
Image data output from the A/D converter (54) output from the circuit (66) is stored in the memory (54).

Next, FIG. 2 and FIG. This will be explained using the timing chart shown in FIG.

FIG. 5(8) shows the data clock a output from the write/read circuit (52). The character/symbol data string b (FIG. 5(B)) taken out from the character generator (40) is sent to the shift register (55) via the switch circuit (64), and is clocked at 8 by the data clock a. Bit parallel data d+-da (Fig. 5 (
D)). The parallel data d1 to d8 are sent to the latch circuit (56), latched by the first latch pulse C (FIG. 5(C)), and the OR circuit (6
6). FIG. 5(E) shows the timing of data writing and data reading of the memory (50). Addressing of the memory (50) is performed at the first timing of the data read period R.

That is, the data read period R1 shown in FIG. 5(E)
The address specification in the subsequent data write period W1 is the same address.

The image data read out from the memory (50) during the data read period R1 (FIG. 5 (F)) tr Ja is sent to the latch circuit (65), and the second latch pulse g (
5(G)). Figure 5 (H) is
Data h+-ha latched by the latch circuit (65) is shown.

The output data d1 to d6 of the latch circuit (55) and the output data h, to h6 of the latch circuit (65) are connected to an OR circuit (
66), the OR logic is performed, and the output data j1 to j6 of this OR circuit (66) are written to the memory (50) during the data write period W1. Such data reading and data writing are repeated in units of 8 bits, and as a result, the character generator (
Data in which the character/symbol data b extracted from 40) are combined is written.

Synthetic data j1 to j6 stored in this memory (50)
is read out, converted into serial data j by a shift register (60), and sent to an electric signal processing circuit (by an adder (25)).
22) is combined with the video signal input from the VTR section (
3) The operation of inputting data to the magnetic tape and recording it on the magnetic tape is the same as in the conventional example, so a description thereof will be omitted.

In the above embodiment, the character generator (40) is shown as an accessory separate from the camera-integrated VTR (100), but it goes without saying that it may be built into the camera-integrated VTR.

Further, in the above embodiments, a camera-integrated VTR that records video signals on a magnetic tape was shown as an example, but the present invention can be similarly applied to a recording/playback device using a magnetic disk, a magneto-optical disk, or the like.

Further, in the above embodiment, the title image data obtained from the memory (50) is superimposed on the video signal obtained from the imaging device section (2), but the reproduced video signal obtained from the VTR section (3) is , it goes without saying that the configuration may be such that title image data obtained from the memory (5'O) is superimposed.

Note that the character generator (
40) usually refers to an IC that houses a circuit constructed based on a commercially available IC for character generators, but instead, it is an IC that converts the output of a word processor or personal computer that is currently commercially available. You may also use it as

[Effects of the Invention] As described above, the title creation device according to the present invention includes means for writing video data extracted from a video signal from a television camera or the like into a memory, image data read from this memory, and text.・A data synthesis means for synthesizing the character/symbol data extracted from the symbol data generator and a means for writing the synthesized title image data into a memory are provided, and the title image data is read from the memory and the imaging device section Since it is equipped with a means for inserting into any position of the video signal output from This has the effect of providing a title creation device that can create a desired title from among the combined titles.

[Brief explanation of drawings]

Figure 1 shows a camera-integrated VTR which is an embodiment of this invention.
2 is a block circuit diagram of an example of the configuration of the title generation circuit of this embodiment, FIG. 3 is a block circuit diagram of an example of the configuration of the character generator of this embodiment, and FIG. Figure 5 shows an example of character data stored in the display character ROM built into this character generator. 6 is a block circuit diagram of a conventional camera-integrated VTR, and FIG. 7 is a block circuit diagram showing an example of the configuration of a title creation circuit of this conventional example.
FIG. 8 is a block circuit diagram of another conventional camera-integrated VTR. (1) System control unit, (2) Imaging device unit, (3) VTR unit, (20) Title insertion circuit, (25) Adder, (26 )...Title creation circuit, (40)...Character generator,
(50)...Memory, (52)...Writing/reading circuit, (54)...A/D converter, (55),
(80)...Shift register, (56). (65)...Latch circuit, (64)...Switch circuit, (δ6)...OR circuit. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] (1) An imaging device unit that photographs a subject image, a means for writing desired image data of the photographed video signal into a memory, a means for generating image data such as characters and symbols, and an image read out from the memory. means for combining the data and character/symbol data taken out from the character/symbol data generating means and writing it into the memory; A title creation device comprising means for reading synthetic data and recording it on the recording medium.