JP3205568B2 - Imaging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an imaging device.

[0002]

2. Description of the Related Art For example, in a video image pickup apparatus, there is an apparatus for superimposing and recording information such as date and time on a screen by synthesizing signals such as characters. In addition, by compressing the screen optically, the image is taken with the aspect ratio of the screen changed, so that when viewed on a receiver having a wide aspect screen with a large aspect ratio, a wider feeling can be obtained. There is a device.

[0003]

There is no problem in viewing an image obtained by optically compressing a screen and changing the aspect ratio with a receiver having a wide aspect screen. On the machine, the screen becomes an unnatural image compressed in the horizontal direction. So we cut off both ends of the video signal,
A method is used to make it fit within the screen. However, when the above two devices are used at the same time, when the obtained image is viewed with the receiver of the current aspect ratio truncated at both ends of the video signal, information such as the date and time combined with the video signal is However, since it is displayed in the corner of the normal screen, it is not displayed on the screen of the receiver. This will be described below with a specific example.

FIG. 2 shows a conventional apparatus. In the figure,
1 is a video imaging device (camera) that outputs a video signal, 3
Is a character generating circuit for generating a character signal, 2 is a synthesizing circuit for synthesizing a video signal from the imaging device 1 and a character signal from the character generating circuit 3, 4 is a microcomputer for controlling the character generating circuit 3, and 5 is a synthesizing circuit. 2, a video recorder for recording video signals from 2, an anamorphic lens 7 that is detachable from the imaging device 1 and optically changes the aspect ratio of the screen, and 10 is a receiver having the current (NTSC system) aspect ratio ,
Reference numeral 11 denotes a horizontally long screen receiver having a different aspect ratio.

[0005] A video signal a and a synchronizing signal are output from the image pickup apparatus 1 and input to a synthesizing circuit 2 and a character generating circuit 3 respectively. The character generating circuit 3 outputs a character signal synchronized with the synchronizing signal to the synthesizing circuit 2 under the control of the microcomputer 4. The character signal and the video signal a are combined by the combining circuit 2 to become the video signal b. This signal is recorded or reproduced by the video recorder 5 as it is or as an output signal, and is input to the receiver 10 (video signal c) and the receiver 11 (video signal d) having a horizontally long screen. At this time, the state of the video signal of each part is shown in FIG.
~ D. In the receiver 11 having a horizontally long screen, non-signal portions appear at both ends of the screen, but the synthesized character signal is normally displayed. Next, the video signal of each part when the anamorphic lens 7 is mounted is as shown in FIG. Since the video signal is expanded and displayed on the entire screen of the receiver 11 having a horizontally long screen, a screen free from graphic distortion as shown in d of FIG. However, in the receiver 10, since both ends of the video signal are truncated and displayed, the character signal is also truncated although there is no graphic distortion as in c of FIG.

Accordingly, an object of the present invention is to provide an image pickup apparatus which has solved the above problems.

[0007]

In order to achieve the above object, according to the present invention, when an apparatus for optically changing the aspect ratio of a screen is mounted, the position of an information signal to be synthesized with a video signal is provided. Characterized by having means for changing According to a second aspect of the present invention, in the first aspect,
The image processing apparatus further includes a detection unit that detects mounting of the device that optically changes the aspect ratio of the screen. According to a third aspect of the present invention, in the first or second aspect, the information signal includes a character signal. According to a fourth aspect of the present invention, in the first or second aspect, the apparatus for optically changing the aspect ratio of a screen includes an anamorphic lens.

[0008]

According to the present invention, when a device for optically changing the aspect ratio of a screen is added, the position of an information signal to be synthesized is moved to thereby obtain an obtained image with the current aspect ratio. When the video signal is cut off at both ends and viewed by the receiver, information such as the date and time combined with the video signal displayed in the corner of the screen is also displayed without loss.

[0009]

FIG. 1 shows a first embodiment of the present invention.
In FIG. 1, reference numeral 1 denotes a video imaging device (camera) that outputs a video signal; 3 denotes a character generation circuit that generates a character signal;
Is a synthesizing circuit for synthesizing the video signal from the imaging device 1 and the character signal from the character generating circuit 3; 4 is a microcomputer for controlling the character generating circuit; 5 is a video recorder for recording the video signal from the synthesizing circuit 2; Is an anamorphic lens that can be attached to and detached from the imaging device 1 and optically changes the aspect ratio of the screen, 8 is a switch, 10 is the current state (NTSC
And 11 is a horizontally long screen receiver having a different aspect ratio.

A video signal a and a synchronizing signal are output from the image pickup device 1 and input to the synthesizing circuit 2 and the character generating circuit 3, respectively. The character generating circuit 3 converts the character signal synchronized with the synchronizing signal into a synthesizing circuit 2 under the control of the microcomputer 4.
Output to The character signal and the video signal a are combined by the combining circuit 2 to become the video signal b. This signal is recorded or reproduced by the video recorder 5 as it is or as an output signal, and is input to the receiver 10 (video signal c) and the receiver 11 (video signal d) having a horizontally long screen. At this time, the state of the video signal of each unit is shown in FIG.
~ D. Next, when the anamorphic lens 7 is mounted, by turning on the switch 8, the microcomputer 4 instructs the character generation circuit 3 to move the position of the character signal to be synthesized to the inside of the screen. As a result, the image receiver 1 having a horizontally long screen as shown in FIG.
As shown in FIG. 4C, even if both ends of the video signal are truncated as shown in FIG. 4C, the synthesized character signal is displayed without loss.

(Other Embodiment) FIG. 3 shows a second embodiment of the present invention. In the figure, 9 is an anamorphic lens 7
Is a detection circuit for detecting the presence / absence of attachment, and the other same reference numerals are the same as those in FIG. The operation of this embodiment will be described. On a normal screen, as in the first embodiment, neither the image receiver 10 nor the image receiver 11 having a horizontally long screen has graphic distortion as shown in FIG. Is displayed. Next, when the anamorphic lens 7 is used, this is detected by the detection circuit 9, and the detection signal is input to the microcomputer 4. The microcomputer 4 instructs the character generation circuit 3 to move the position of the character signal to be synthesized to the inside of the screen. Accordingly, even if both ends of the video signal are truncated in the image receiver 10 as shown in FIG. 4C as well as in the image receiver 11 having a horizontally long screen as shown in FIG. The signal will be displayed without missing.

[0012]

As described above, according to the present invention,
In an imaging device that synthesizes an information signal on an imaged video signal, even if an image is added and imaged with a device that changes the aspect ratio of the screen optically, by moving the position of information such as characters to be synthesized, for example, The current aspect ratio (for example, NTS
Even if both ends of the video signal are truncated and displayed on the receiver of the screen of the (C system), the combined information signal can be displayed on the receiver without loss.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is a block diagram of a conventional example.

FIG. 3 is a block diagram of a second embodiment of the present invention.

FIG. 4 shows a state of a video signal in each section of FIGS.
It is the figure which showed typically.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Video imaging device 2 Synthesis circuit which synthesize | combines a video signal and a character signal 3 Character generation circuit which generates a character signal 4 Microcomputer which controls the character generation circuit 3 5 Video recorder which records a video signal 7 Removable optical Lens that changes the aspect ratio of the screen 8 Switch 9 Detection circuit that detects the presence or absence of the anamorphic lens 7 10 Receiver with current aspect ratio 11 Receiver with landscape screen with different aspect ratio

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/232 H04N 5/278

Claims (4)

(57) [Claims] 1. An image pickup apparatus comprising: means for changing a position of an information signal to be combined with a video signal when a device for optically changing the aspect ratio of a screen is mounted. 2. The imaging apparatus according to claim 1, further comprising a detection unit that detects mounting of the device that optically changes the aspect ratio of the screen. 3. The imaging device according to claim 1, wherein the information signal includes a character signal. 4. The imaging apparatus according to claim 1, wherein the device for optically changing the aspect ratio of the screen includes an anamorphic lens.