JPH04271083A - Vtr device with title editing function - Google Patents

Abstract

PURPOSE:To facilitate the formation of a title image, etc., by specifying starting and finishing positions on a superposing and recording tape with the value of a tape counter and selecting a character, a picture, etc., from a previously prepared image library. CONSTITUTION:The traveling quantity of a tape is calculated in the units of hours, minutes and seconds based on a microprocessor PC 11 or a CTL signal and a reel pulse and the information of a counter is formed. Thus, information as to the starting and finishing positions for superposing and recording a title in image is made into the information of the counter, it is stored in the PC 11 and superposing and recording are started and finished by making the value of the counter at the time of edition coincidnt with the stored one of the counter. A video signal from the outside supplied to synthesic circuits 18 and 19 via an input section 20 and the title image read out from a memory 10 by a titler circuit 9 is synchronized horizontally and vertically with a color phase and inserted as a composite picture.

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR device having a video dubbing function for partially overlapping recording on a tape.

0001

[Prior Art] Japanese Patent Application Laid-Open No. 61-237283 states that
It is described that the tape counter value is reset at the reference point of the editing time axis during tape editing. Furthermore, Japanese Patent Laid-Open No. 63-260376 discloses a method of storing pre-captured title images, subtitle images, etc. in a memory, reading them out at any time during the imaging operation, and inserting them into the video signal for recording. is disclosed.

0002

[Problem to be solved by the invention] In the above-mentioned conventional technology, it is necessary to prepare pictures such as title images and subtitle images in advance, which is time-consuming and leaves ordinary people dissatisfied because they are unable to draw neat pictures. There was a problem. Furthermore, there is also the problem that it is not possible to partially overwrite an image that has already been recorded. An object of the present invention is to be able to easily create title images, subtitle images, etc. by selecting characters, pictures, etc. from a pre-prepared image library, and at the same time, to position the starting point, end point, etc. It is an object of the present invention to provide a VTR device with a title editing function that allows the title to be easily specified using the counter data.

0003

[Means for Solving the Problems] In order to achieve the above object, a means for specifying the start and end positions of overlapping recording on a tape by tape counter values is provided, and a title image stored in a storage device in advance is provided. A means for reading out and inserting subtitle image information and subtitle image information is provided. Furthermore, a temporary storage device for the image information is provided to overwrite characters and the like on the title image and telop image. Further, title image information, character information, etc. created using an external personal computer, word processor, etc. can be written into the temporary storage device. Furthermore, a switching circuit or a fade-in/
Provide a fade-out circuit.

0004

[Operation] The start and end points of the overlapping recording described above are designated by tape counter values, and the title image and telop image information stored in advance in the storage device are designated by title numbers and inserted at those positions. Furthermore, the title image and telop image information in the temporary storage device are processed and characters etc. are overwritten. In addition, title image information, character information, etc. created using an external personal computer, word processor, etc. are written in the temporary storage device. Further, the overlapping recording information is switched or faded in/fade out and recorded at a predetermined position on the tape.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a reproduction circuit of a VTR-integrated camera according to the present invention, in which a title picture signal can be inserted into a video signal reproduced from a tape and output. Video F detected from the cassette tape in tape drive system 1
The M signal is input to a brightness circuit 3 and a chroma circuit 4 via a preamplifier 2, and is converted into an NTSC or PAL television signal. Burst gate circuit 7
is a circuit for extracting a color burst signal from the chroma video circuit 4, and the sync separator circuit 8 is a circuit for extracting horizontal and vertical synchronizing signals from the luminance video circuit 3.

The digital memory 10 stores the pictures of a plurality of title images as numerical data, and the titler circuit 9 reads out the title images from the digital memory 10 and synchronizes the horizontal and vertical synchronization and color phase, thereby creating the title image. The title image is inserted into the video signal as a luminance signal (TY), a chroma signal (TC), and a gate pulse signal (GP) to be sent to synthesis circuits 5 and 6 for creating a composite image by inserting the title image into the video signal.

The microprocessor 11 operates the titler circuit 9 and the VTR integrated camera as a whole and controls the mechanical parts. The operation switch group 12 is operated by various operation buttons of the VTR integrated camera. The CTL circuit 13 takes out the CTL signal from the tape drive system 1 during tape reproduction, shapes the waveform, and sends it to the microprocessor 11. The reel pulse circuit 14 extracts reel pulses from the tape drive system 1 that are proportional to the rotational speed of each reel stand on the winding side and the feeding side during tape running, shapes the waveform, and sends it to the microprocessor 11.

The microprocessor 11 calculates the amount of tape travel in hours, minutes, and seconds based on the CTL signal and reel pulse signal to create counter information. In the present invention, the above counter information is used as tape position information. That is, the start point and end point position information of the overlapping recording of the title image is converted into the counter information and stored in the microprocessor 11, and overlapping recording is started when the counter value at the time of editing matches the stored counter value, and , or stop it.

FIG. 2 is a block diagram of a circuit portion for superimposing and recording title images on a video camera with a VTR. A video signal from a camera or an external input terminal is input to the video signal input section 20, and its output is output from the combining circuits 18 and 19.
As a result, the titler circuit 9 inserts the title image read from the memory 10 as a composite image with horizontal and vertical synchronization and color phase synchronized.

The NTSC or PAL television output signals from the synthesis circuits 18 and 19 are converted into video FM signals by a luminance video circuit 16 and a chroma video circuit 17, respectively, and sent to the tape via a recording amplifier 15.
recorded in the file. In addition, as in the case of FIG.
Based on the CTL signal and reel pulse signal extracted by the controller, the amount of tape travel in hours, minutes, and seconds is calculated to create counter information.

Next, referring to FIG. 3, an explanation will be given of the operation procedure for video overdubbing editing according to the present invention. First, in FIG. 1, a tape on which editing material has been recorded is loaded, and a title number to be overwritten is selected using the program editing switch and position switch in the operation switch group 12. For example, the program editing switch and position switch are assigned to switches S1 and S2, respectively.

When the program editing switch S1 is pressed, the program editing mode is entered, and while watching the playback screen of the tape on the monitor TV, select a location to be overwritten and turn on the position switch S2 at that location. By the above operation, the tape counter value corresponding to the start point of overlapping recording of the title number and title picture is set to the microprocessor 1.
1 is stored.

Furthermore, in FIG. 3, the tape counter value is 0:0.
Title number No. starts from the 0:15 position. 01 title picture is to be inserted. The title number is specified using a group of operation switches other than S1 and S2. Next, when the position switch S2 is turned OFF at the point where the title picture is to be erased, the tape counter value corresponding to the end point of overlapping recording of the title picture is stored in the microprocessor 11. In FIG. 3, this value is 0:00:25.

Further, according to the present invention, images other than the title image can be recorded overlappingly. For example, the number of the video other than the title picture is set to 00 and is selected by the title switch. In Figure 3, the tape counter value is 0:04:07.
to 0:07:07 is set as number 00 for videos other than the title picture. In this way, it is possible to perform overlapping recording by taking pictures from a VTR-integrated camera or overlapping recording from an external input terminal, and it is also possible to perform the next editing work in the same manner.

[0015] Furthermore, according to the present invention, the editing process can be facilitated by displaying the above-mentioned editing process on the screen of the monitor TV as an editing menu. For example, as shown in FIG.
The overlapping recording end point (stop), title picture number (title), etc. are displayed with the tape counter value and title number, and unset areas are displayed with --, and the above-mentioned -- display of the next setting location is blinking. I try to let them do it. Furthermore, the numerical value shown at the bottom left is the current value of the tape counter. Further, a title image as shown in FIG. 5 may be displayed on the monitor TV to facilitate searching.

Next, after the program editing menu is completed, overlapping recording of video dubbing editing is executed. In FIG. 2, when the video dubbing switch in the operation switch group 12 is pressed, the tape is automatically rewound to a point slightly before the tape counter position where overlapping recording starts, and then the tape is advanced in the playback state, and the overlapping recording is performed. Overlap recording is performed from the start position to the overlapping recording end position, and then the next overlapping recording start point is recorded.
fast forward the tape to just before the tape counter position. Note that the video dubbing switch includes, for example, switch S5.
Assign.

Therefore, in the case of FIG. 3, the tape is rewound to a point just before the tape counter value 0:00:15, and then the tape is advanced in the playback state until 0:00:14. Title number 01 is overwritten from :15 to 0:00:25, and the tape is fast-forwarded to just before the next specified location. In addition, in the present invention, the VTR
The title image insertion position can be determined by placing the attached video camera in the playback mode as shown in Figure 1, and then the title image can be written by switching to the recording status as shown in Figure 2.
It is possible to obtain the feature that the title picture editing work can be completed with one video camera equipped with a VTR.

[0018]Although the title image information is appropriately selected from the memory 10 and used, it is usually desired to add text information such as a title or date onto the image. Adding text information such as the title and date can be made possible, for example, by adding a buffer memory 20 around the memory 10 as shown in FIG. 6 and slightly increasing the functions of the titler circuit 9. First, a desired title picture is called from the memory 10 and stored in the buffer memory 20. Next, character information to be added to it is photographed with a camera and overlaid on the title picture information in the buffer memory 20. Make it light. For this reason,
The titler circuit 9 extracts only text information from the photographic information of the camera, generates an address for the buffer memory 20 according to its position in the screen, and writes only the text information.

[0019] Furthermore, the above character information can also be generated by a character generator. FIG. 7 is a diagram showing an embodiment of the present invention that enables writing of the above-mentioned character information. The character generator 21 can generate, for example, katakana, hiragana, alphanumeric characters, and other simple kanji characters, and an attached editing key 22 can be used to select a character and specify its position. Further, the editing screen for the above characters can also be displayed on a monitor television. The character generator 21, editing key 22, etc. can be housed integrally in a video camera with a VTR, but generally they do not need to be carried when shooting, so they are designed to be removable.

FIG. 8 is a block diagram of an embodiment of the present invention in which a title image generated by a general personal computer, word processor, etc. can be inserted. A title picture generated in advance by a personal computer, a word processor, etc. is input to a titler circuit 9 equipped with an interface circuit for these, and is input to a buffer memory 31.
is stored in This title picture is then inserted through the titler circuit 9 into a predetermined editing position as specified by the video dubbing switch S5, title number switch, etc.

[0021] Furthermore, the title picture in each of the embodiments of the present invention can be switched and inserted by a switch, or can be inserted by a fade-in/fade-out. FIG. 9 shows an example of the synthesis circuits 5 and 6 in FIG. 1, and the synthesis circuits 18 and 19 in FIG. Although FIG. 9 shows the combining circuit 5 in FIG. 1, the functions of other combining circuits are similar.

In FIG. 9, the output Y of the luminance circuit 3 is applied to a terminal 51, and the luminance signal TY of the title picture output from the titler circuit 9 is applied to a terminal 52. Above T
and TY, transistors 53 and 54 generate currents proportional to T and TY, respectively. A gate pulse signal GP generated by the titler circuit 9 or a control voltage Vc is applied to the terminal 59, and the two differential pair transistors 5
5, 56, 57, and 58 switch or divide and combine the output currents of the transistors 53 and 54 to generate an output signal at the terminal 60. When the gate pulse signal GP is applied to the terminal 59, the synthesis circuit 5 works as a switching circuit for switching the brightness signal, and when the control voltage Vc is applied, it works as a fade-in/fade-out circuit for the brightness signal. .

[0023] In the above embodiment of the present invention, the VT
Although the description has been made with reference to an R-integrated video camera, the present invention can be similarly applied to, for example, stationary VTRs and video cameras.

[0024]

According to the present invention, the tape counter circuit included in the conventional device can be used to specify the start and end points of overlapping recording, and to store a library in advance at that position. You can easily insert title images and subtitle image information by specifying them by title number. Furthermore, it is possible to overwrite the title image with characters and the like. Furthermore, title images created using an external personal computer, word processor, etc. can also be recorded overlappingly. Furthermore, in addition to overlapping recording by switching the overlapping recording images, it is also possible to perform fade-in/fade-out recording.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a tape playback system according to the present invention.

FIG. 2 is a block diagram of an embodiment of a tape recording system according to the present invention.

FIG. 3 is a timing chart on tape in an editing example of the present invention.

FIG. 4 is an example of an edit menu screen according to the present invention.

FIG. 5 is an example of a title image group used for video dubbing editing.

FIG. 6 is a block diagram of a titler circuit to which a temporary storage device is added and its peripheral parts in the present invention.

FIG. 7 is a block diagram of a titler circuit to which a character generation device is connected and its peripheral parts in the present invention.

FIG. 8 is a block diagram of a titler circuit connected to a personal computer or a word processor and its peripheral parts in the present invention.

FIG. 9 is a circuit diagram of an example of a synthesis circuit used in the present invention.

[Explanation of symbols]

1 Tape drive system 2 Preamplifier 3 Brightness circuit 4 Chroma circuit 5 Synthesis circuit 6 Synthesis circuit 7 Burst gate circuit 8 Synchronous separation circuit 9 Titler circuit 10 Memory 11 Microprocessor 12 Operation switch 13 CTL circuit 14 Reel pulse circuit 9 Titler circuit 10 Digital memory 11 Microprocessor 12 Operation switch group 16 Brightness circuit 17 Chroma circuit 18 Synthesis circuit 19 Synthesis circuit 20 Video signal input section 21 Character generator 22 Edit key 30 Personal computer 51 Input terminal 53 Transistor 60 Output terminal

Claims (5)

[Claims] 1. A VTR device capable of performing overlapping recording on a recorded tape, comprising means for specifying a starting point position and an ending point position on the tape of said overlapping recording by means of a tape counter value. A VTR device with a title editing function. 2. The title editing function according to claim 1, further comprising a storage device for storing a title image, a caption image, etc. as installation information for the overlapping recording, and means for specifying and reading out the contents thereof. VTR device with. 3. A VTR device with a title editing function according to claim 1, further comprising a storage device for temporarily storing said overlapping recording information and a reading means therefor. 4. A VTR device with a title editing function according to claim 3, further comprising means for writing/reading image information, character information, etc. from an external device into the temporary storage device for the overlapping recording information. 5. Claims 1 to 4, characterized by comprising an image signal synthesis circuit capable of switching the image information of the recorded tape and the overlapping recording information by switching or fade-in/fade-out. VTR device with title editing function.