JPH01297987A - Picture recording system - Google Patents

Abstract

PURPOSE:To execute stable consecutive recording even in case of a magnetic tape which has been recorded by different recorders by reproducing and storing a video signal which has been recorded already and mixing it with a video signal to be recorded newly. CONSTITUTION:A picture recording part is set to a reproducing state, a screen signal which has been brought to picture recording to a magnetic tape is reproduced successively from a head 7, outputted through a reproducing signal processing circuit 9, stored in a frame memory 3, and thereafter, read out repeatedly. This output is supplied to the head 7 through a picture recording signal processing circuit 10 and brought to picture recording. By these operations, in case when the tape which has been brought to picture recording has been reproduced, a screen which was brought to picture recording in the past is recorded consecutively and smoothly to a screen which has been brought to picture recording newly.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention records a new video signal following a video signal previously recorded on a recording medium such as a magnetic tape. The present invention relates to a recording method that provides stable continuity of a reproduced video signal during so-called continuous shooting, and is particularly effective when used in a video camera-integrated recording device.

2. Description of the Related Art As a method of continuous shooting using a conventional video camera-integrated recording device, there is a first method in which a previously recorded previous screen and a newly recorded subsequent screen are switched on a field-by-field basis. Also, if you memorize the last frame screen when you press the recording stop switch and then press the recording start switch, the currently captured screen and the memorized -frame screen will be captured. The second step is to mix and shoot continuously so that the proportion of the screen that is displayed increases gradually.
There is a method.

Problems to be Solved by the Invention However, when using the above first method, during playback,
There is a problem in that the screen changes in an instant, and if the recorded screen and the subsequently recorded screen are each short, they are broken into pieces, making it very unsightly. In addition, in the case of the second method, the curve between the screens is very good and smooth, but since the frame memory is built into the signal processing circuit of the video camera, The screen to be captured is limited to the screen currently being imaged. Therefore, if you turn off the power to the video camera,
The memorized screen disappears, making this continuous shooting impossible. Furthermore, even when recording on a different magnetic tape that has been previously recorded, there is a problem in that such smooth splicing is impossible.

An object of the present invention is to provide an R-type that allows smooth continuous shooting even in the above-mentioned cases.

Means for Solving the Problems The recording method of the present invention, when continuously recording a new video signal on a recording medium on which a video signal has been previously recorded, reproduces the previously recorded video signal at the start of recording. The video signal is stored, and the stored reproduced video signal and the video signal to be newly recorded are mixed and recorded so that the ratio of the video signal to be newly recorded increases sequentially. It is something to do.

Operation According to the above configuration, the already recorded video signal is played back and stored, and the stored video signal and the video signal to be newly stored are mixed together at the time of continuous shooting. Since it is not necessary to always store the final video signal from the previous recording, smooth splicing is possible even with magnetic tapes recorded with other recording devices.

Embodiment FIG. 1 is a block diagram of a video camera integrated recording apparatus according to an embodiment of the present invention, and FIG. 2 schematically shows changes in the recording screen during continuous shooting in this embodiment. In Figure 1, 1 is a video camera unit that converts the subject into a video signal, 2 is a recording unit that records the video signal, 3 is a semiconductor memory part that stores one screen of video signals, and 4 is a manually operated recording unit. A start switch 6 indicates the semiconductor memory part 3
memory control circuit for controlling writing and reading of 6
Reference numeral 8 indicates an input changeover switch for switching between the output of the video camera section 1 and a video signal input to the external terminal 16;
9 is a reproduction signal processing circuit for processing a reproduction signal from the head, and 10 is a signal processing circuit for recording a video signal to be recorded by the head 7. Recording signal processing circuit to perform, 14
12 is a mix circuit that sequentially mixes the output video signal of the input changeover switch 6 and the readout output of the memory part 3 according to the output of the mix control circuit 11 at a ratio that changes as described below; 12 is a signal sent to the head 7; head 7
This is a recording/playback switch that switches between the signal being played back and the signal being played back.

The operation of the video camera integrated recording apparatus of this embodiment configured as described above will be explained below using FIG. 2. The recorded screen signals α1 to α7 shown in FIG. 2 represent one screen of the video signal already recorded on the magnetic tape in the recording unit 2 shown in FIG. 1, and are sequentially played back in this order during playback. During continuous shooting, when the recording unit is first put into the playback state, the recording and playback switch 12 is switched to the playback side, and the screen signals α1 to α recorded in advance on the magnetic tape are sent from the head 7.
7 are sequentially reproduced and output through the reproduced signal processing circuit 9. In this state, when the recording start switch 4 is pressed at time 1=0, the screen signal α6 at that time is stored in the frame memory part 3, and the screen signal α5 is repeatedly read out from the frame memory part 3. In Figure 2,
From time 1 = 0 to t = 4, as the switching timing of the mix circuit 4 is made earlier in the horizontal direction of the screen signal, the proportion of the screen occupied by the output screen signals A1 to A4 of the video camera increases, and the final At time t=5, only the output screen signal A4 of the video camera is output. This output is guided to the head 7 through the recording signal processing circuit 1o for recording. With the above operations, when a recorded magnetic tape is played back, the previously recorded screens α1 to α6 are smoothly connected to the newly recorded screen, and the connection between the screens does not feel strange. As an example of this mixing, a switch in the mix circuit 14 is switched between the output side of the memory part 3 and the output side of the video signal to be newly recorded at a timing synchronized with the horizontal synchronization signal of both video signals. , the video signal a6 which is the output of the memory part 3, and the video signal AI to be newly recorded, A2°A3. A4. It is preferable to configure one screen with A5.

This switching timing changes with the passage of time, and as shown in FIG. 2, the switching timing changes as shown in FIG. A2, As, A4. The structure is such that the ratio of As increases sequentially.

In the embodiment, new recording signals are replaced on the screen so that they increase sequentially from right to left, as in the example in Figure 2, but as a method of mixing the memory screen and video camera screen, conversely, The levels may be changed from right to left, from top to bottom, and from bottom to top, or may be mixed so that the levels of the entire screen are gradually replaced.

Effects of the Invention As described above, according to the present invention, during continuous shooting, an already recorded video signal is played back, this playback signal is stored, and it is mixed with a video signal to be newly recorded. Because of this structure, stable splicing can be performed even with magnetic tapes recorded with different recording devices.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an integrated video camera recording apparatus according to an embodiment of the recording method of the present invention, and FIG. 2 is a recording screen diagram of the same embodiment. 1... Video camera section, 2... Recording section %3... Semiconductor memory, 4... Recording switch, 7... Magnetic head , 11...
-Mix control circuit, 14...Mix circuit.

Claims (1)

[Claims] When continuously recording a new video signal on a recording medium on which a video signal has been recorded in advance, reproducing the video signal recorded in advance at the start of recording and storing the video signal,
A recording method characterized in that the stored reproduced video signal and the video signal to be newly recorded are recorded while being mixed so that the ratio of the video signal to be newly recorded increases sequentially.