JPH0236686A - Picture transmitter-receiver - Google Patents

Abstract

PURPOSE:To allow a photographer to select a picture while a mirror image of an object displayed on a monitor is confirmed visually when the photographer is the object by providing a picture switching means displaying a picture of the object in terms of mirror image at the selection of a picture and sending the selected picture in terms of an errected image. CONSTITUTION:A picture signal from a line inverter 12 is inputted to each terminal A of a 3rd changeover switch 1A, a 4th changeover switch 6A and a manual changeover switch 13. When a terminal of the changeover switch 13 is selected to the position of the terminal A, a mirror image whose left/right position is inverted by the line inverter 12 is displayed on a monitor 3. Moreover, when the terminal is a terminal B, the left/right of the picture picked up by a video camera 2 is inverted and the mirror image of an object is displayed on the monitor 3, and the picture sent from the opposite party is displayed on the monitor 3 as an errected image without any inversion. When the terminal is a terminal C, the picture not subject to inversion is displayed on the monitor 3. Thus, the picture is easily selected even when a photographer is an object.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an image transmitting/receiving device used for videophones, etc., and is useful when a photographer is the subject.

(Prior Art) A conventional example of an image transmitting/receiving device used in a videophone is shown in FIG.

That is, after switching the contact of the first changeover switch 1 to the A terminal, the subject is photographed with the video camera 2, and this image is displayed on the monitor 3 as a moving image. Then, when the photographer visually checks the image on the monitor 3 and finds an image that he/she likes, he/she operates the trigger circuit (not shown) and memory control circuit (not shown), and sends the image via the A/D converter. The image is selected and stored in the first memory 5. When checking the stored image, the first changeover switch 1 is switched to the B terminal, and the second changeover switch 6 is switched to the B terminal.
Switch the contact to the A terminal. As a result, the first memory 5
The image stored in is output to the monitor 3 via the D/A converter 7 and displayed as a still image, and the image is checked. If the user does not like the image, the user can repeat the above operation to take a new image.

Then, when transmitting the image to the other party, press the transfer switch (
(not shown) is turned on, and the image stored in the first memory 5 is transferred to the telephone line via the modem (modulation/demodulation circuit) 8, and the still image is transmitted to the other party's monitor for display.

On the other hand, the image transmitted from the other party is demodulated by the modem 8 and then stored in the second memory 9. Then, the contacts of the first and second switches 1 and 6 are both switched to the B terminal, and the image stored in the second memory 9 is output to the monitor 3 via the D/A converter 7 for display.

(Problems to be Solved by the Invention) However, in such conventional image transmitting/receiving devices, when the photographing lens of the video camera 2 is directed toward the subject, the image of the subject viewed from behind the video camera 2 is not displayed on the monitor. 3, the following problem occurred when the photographer was the subject.

That is, when a photographer faces the camera lens of the video camera 2 and photographs his or her own image while viewing the monitor 3, for example, if the photographer moves to the left, the image on the monitor 3 moves to the right. Therefore, it was difficult to see the shadow.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image transmitting/receiving device that allows a photographer to easily select an image even when the subject is the subject.

Means for Solving the Problems> For this reason, the present invention provides a method for displaying an image of a subject on a monitor, photographing it, selecting a desired image, transmitting the selected image to the other party, and receiving the image from the other party. The monitor is further provided with image switching means for displaying the image of the subject as a mirror image and transmitting the selected image as a normal image when selecting the image.

<Function> When the photographer is the subject, the photographer selects an image while visually checking the mirror image of the subject displayed on the monitor.

<Example> Below, an example of the present invention will be described based on the drawings. In each embodiment, the same elements as those in the conventional example are given the same reference numerals as in FIG. 6, and the explanation thereof will be omitted.

1 and 2 show a first embodiment of the present invention. In FIG. 1, an output section of a video camera 2 as an imaging device has an image signal of the video camera 2 and an image signal input from the outside. A selection switch 11 is provided for selecting and switching. Further, the image signal from the first changeover switch 1 is transferred to a line inverter 12 and a manual changeover switch 13, which will be described later.
The signal is input to the terminal and the B terminal of the third changeover switch IA. The image signal from the third changeover switch IA is input to the B terminal of the fourth changeover switch 6B.
The image signal from A is input to the manual switching switch border 130B terminal. Further, the image signal from the line inverter 12 is connected to the A terminal of the third switch IA and the fourth switch IA.
A terminal of changeover switch 6A and A terminal of manual changeover switch 13
input to the terminal and.

Here, the third changeover switch IA is linked to the switching operation of the first changeover switch 1, and is controlled to be switched to a terminal having the same symbol (A or B) as the first changeover switch 1. Also, the fourth
The changeover switch 6A is linked to the switching operation of the second changeover switch 6, and is controlled to be switched to a terminal having the same symbol as the second changeover switch 6.

Furthermore, when the terminal of the automatic switching switch 13 is the A terminal, an image whose left and right sides are inverted by the line inverter 12 (hereinafter referred to as
(called a mirror image) is displayed on monitor 3.

Also, when the terminal is the B terminal, the image taken by the video camera 2 is flipped left and right and a mirror image of the subject is displayed on the monitor 3, and the image sent from the other party is not flipped and is displayed on the monitor 3. displayed as a normal image. Further, when the terminal is the C terminal, only the uninverted image is displayed on the monitor 3.

Next, the specific configuration of the line inverter 12 will be explained based on FIG. 2. The image signal from the first changeover switch 1 is input to the A/D converter 14. After A/D converting the signal, the A/D converter 14 switches the fifth changeover switch 15.
The first line memory 16 and the second line memory 1
7. The first and second line memories 16 and 17 are adapted to store input image signals.

Further, a write controller 18 is provided for storing image signals in the first and second line memories 16 and 17,
The control signal of the write controller 18 is
The signal is input to the D converter 14 and the A terminals of the sixth changeover switch 19 and the seventh changeover switch 20. The signal from the sixth changeover switch 19 is input to the first line memory 16, and the signal from the changeover switch 20 is inputted to the second line memory 17.

Further, a readout controller 21 for reading out image signals recorded in the first and second line memories 16 and 17 is provided, and a control signal of the readout controller 21 is as follows.
The signal is input to the B terminals of the sixth changeover switch 19 and the seventh changeover switch 20 and the D/A converter 22. Said D/A
The image signal of either the first line memo January 6 or the second line memo January 7 is input to the converter 22 via the eighth changeover switch 23.

Here, when the contact of the fifth changeover switch 15 is changed to the A terminal, the sixth changeover switch 19 is changed to the A terminal, the seventh changeover switch 20 is changed to the B terminal, and the eighth changeover switch 23 is changed to the A terminal. It can be switched to the B terminal. Therefore, in such a state, while the image signal is written to the first line memory 16, the image signal is written to the second line memory 16.
An image signal is read out from 7.

On the other hand, when the contact of the fifth changeover switch 15 is switched to the B terminal, the sixth to eighth changeover switches 19 and 20 are switched to the opposite terminals, and the first and second line memories 1
The write and read operations of 6.17 are also reversed. Such fifth
The switching operation of the changeover switch 15 is performed for each scanning line.

Here, writing operations based on address instructions to the first and second line memories 16 and 17 are performed by incrementing operations, while reading from the first and second line memories 16 and 17 is performed by displaying a mirror image of the subject on the monitor 3. This is done by a decrement operation as shown below.

Then, the image signal from the D/A converter 22 is transmitted to the monitor 3.
will be displayed.

Next, the action will be explained.

First, by switching the first changeover switch 1 to the A terminal and the second changeover switch 6 to the B terminal, the third
Switch the changeover switch IA to the A terminal and change the fourth changeover switch 6A to the B terminal. Further, the automatic selection switch 13 is set to the B terminal, and the video camera 2 takes a close look at the subject. As a result, the image signal from the video camera 2 is input to the line inverter 12 via the first changeover switch 1, the line inverter 12 inverts the image signal, and this inverted image signal is displayed on the monitor 3. let

Therefore, since a mirror image of the subject is displayed on the monitor 3, when the photographer is the subject, the image on the monitor 3 also moves in the direction in which the photographer moves, making it easier to photograph. For example, when the photographer's face is at the right end of the monitor 3, if the photographer moves to the left, the image on the monitor 3 will also move to the left, making it easier for the photographer to understand the direction in which he or she is moving and take pictures.

When the user finds an image he or she likes, the user operates the trigger circuit and memory control circuit to store the image in the first memory 5. The image stored in the first memory 5 is then transmitted to the other party as a normal image. This allows normal images to be transmitted to the other party. Furthermore, when viewing an image from the other party, when the first switch 1 is switched to the B terminal, the third switch IA is also switched to the B terminal, so the image signal from the second memory 9 must pass through the line inverter 12. The image is displayed on the monitor 3 without being reversed horizontally, and the image is displayed on the monitor 3 as a normal image.

When viewing images stored in the first memory 5, switch 1. Since IA is at the B terminal, changeover switch 6°6A is at the A terminal, and changeover switch 13 is at the B terminal, the characters in the image are also reversed, so when you want to check the characters, do not reverse the image. In this case, the selector switch 13 may be switched to the C terminal.

Furthermore, in the above description, the first memory l and the line inverter 12
Although explained separately, in order to reduce the number of A/D converters and D/A converters, it is necessary to separate the A/D converter 4 and the first memory 5.
It is also possible to provide a changeover switch between the two and make the changeover switch 6 three poles, and provide only a line inverter in parallel with the first memory 1 without providing an A/D converter and a D/A converter.

FIG. 3 shows a second embodiment of the invention.

In this embodiment, the fourth changeover switch 6A of the first embodiment is removed, and the other configurations are the same as those of the first embodiment.

According to this configuration, when the image of the video camera 2 is directly displayed on the monitor 3 when the automatic selection switch 13 is set to the B terminal, a mirror image of the subject is displayed on the monitor 3 as in the above embodiment.

However, if the first changeover switch 1 is switched to the B terminal when securing the image in the first memory 5, the third changeover switch IA
Since the image signal of the first memo IJ 5 is output to the monitor 3 without passing through the line inverter 12, the image on the monitor 3 becomes an image whose left and right sides are not inverted. By the way, since the image used for this confirmation is a still image, the image on monitor 3 does not change even if the photographer moves, so there is no inconvenience even if it is not a mirror image of the subject. It can be confirmed by the orientation and is valid.

FIG. 4 shows a third embodiment of the invention.

In this embodiment, the image signals from the video camera 2 and the first memory 5 are input to the monitor 3 without being inverted, and the polarity of the output from the horizontal scanning circuit 31 of the monitor 3 is changed. Note that the operations of the third changeover switch IA, the fourth changeover switch 6A, and the automatic selection switch 13 are the same as in the first embodiment, so their explanations will be omitted.

That is, the horizontal scanning circuit 31 normally displays an image on the monitor 3 by starting horizontal scanning from the upper left end of the screen. When displaying a mirror image of the subject on the monitor 3, the horizontal scanning circuit 31
The polarity of the output from the monitor 3 is inverted by a polarity inverter 32, and the monitor 3 is horizontally scanned using this signal. In this way, since horizontal scanning is performed from the upper right end of the screen of the monitor 3, a mirror image of the subject is displayed on the monitor 3.

FIG. 5 shows a fourth embodiment of the invention.

This embodiment is the same as the third embodiment except that the fourth changeover switch 6A of the third embodiment is removed.

This configuration also has the same effects as the second embodiment.

<Effects of the Invention> As explained above, the present invention displays a mirror image of a subject on a monitor, selects a necessary image, and transmits the selected image as a normal image to the other party. When the subject is the sinking person, the image on the monitor moves in the direction of movement of the photographer, which makes it easier to take pictures, and has the advantage that the other party's receiving device can display a normal image.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a first embodiment of the present invention, FIG. 2 is a block diagram of the main parts of the same as above, FIG. 3 is a block diagram showing a second embodiment of the present invention, and FIG. 4 is a block diagram showing a second embodiment of the present invention. Configuration diagram showing the third embodiment, fifth
This figure is a block diagram showing a fourth embodiment of the present invention, and FIG. 6 is a block diagram showing a conventional example of a photographing device. 2...Video camera 3...Monitor 5...
・First memory 12...Line inverter 31...
・Horizontal scanning circuit 32...radial inverter

Claims (1)

[Claims] While displaying the image of the subject on the monitor, shooting the image, selecting the desired image, and transmitting the selected image to the other party,
In an image transmitting/receiving device which receives an image from the other party and displays it on the monitor, an image switching means displays the image of the subject as a mirror image when selecting the image and transmits the selected image as a normal image. An image transmitting/receiving device comprising: