JP2002196229A - Camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform smooth remote control in a camera system consisting of a camera main body and a display device connected to the camera main body through a communication means. SOLUTION: This camera system is equipped with the camera main body; the display device including a display monitor for displaying image data obtained by performing image pickup by the camera main body and a focus area and an area setting means for setting the position of the focus area, and separated from the camera main body; and the communication means communicating the image data and the area set information between the camera main body and the display device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system comprising a camera body and a display device connected to the camera body via communication means.

[0002]

2. Description of the Related Art In setting a shooting mode of a camera, a mode setting button on a camera body is operated.

[0003]

However, when performing remote control such as remote control photographing, the photographer is at a position away from the camera body, so it is necessary to move to the position of the camera body every time the mode is set. was there. for that reason,
There was a problem such as missing the time lag.

[0004] It is an object of the present invention to solve the above problems and to provide a camera system capable of performing a smooth remote operation.

[0005]

A camera system according to the present invention comprises a camera body, a display monitor for displaying image data captured by the camera body and a focus area, and an area setting means for setting the position of the focus area. A display device separated from the camera body, and communication means for communicating the image data and the area setting information between the camera body and the display device. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to description of an embodiment of the present invention, a camera in which a camera body and a display device are integrally formed as a reference example will be described with reference to FIGS.

FIG. 1 is a block diagram schematically showing a configuration of a camera according to the above-mentioned reference embodiment. In such a configuration, a light beam from a subject is pupil-divided by the optical system 101 and guided to the sensor 102. This sensor 102
The control circuit 10 includes a first image sensor and a second image sensor, and photoelectrically converts two light beams from a pupil-divided subject to generate a video signal.
3 is output. The control circuit 103 outputs the signal to the AF processing circuit 104 when the input signal is used for focus detection, and outputs the signal to the AF processing circuit 104 when the input signal is used for three-dimensional display in the viewfinder. This signal is output to the video output circuit 106.

The AF processing circuit 104 detects a focal point based on the video signal input from the control circuit 103, and outputs the detected focal point to the drive circuit 105 as a control signal. The drive circuit 105 drives a lens drive motor in the optical system 101 based on a control signal input from the AF processing circuit 104, and moves a lens in the optical system 101 to a focal point.

On the other hand, the video output circuit 106
03 is converted into a video signal (three-dimensional video signal) for three-dimensional display, and the display monitor 10
Send to 7. The display monitor 107 performs monitor display according to the input three-dimensional video signal. The video information displayed on the monitor 107 is visually recognized by the photographer via the lenticular sheet 108, so that the photographer recognizes the video information as a three-dimensional video.

According to this configuration, first, the focusing point is detected by the AF processing circuit 104, then the amount of deviation from the detected focusing point is calculated, and the sensor 102 is detected based on the calculation result.
By controlling the timing at which the video signal is read from the camera, it is possible to display a three-dimensional video even when the optical system 101 remains out of focus.

Note that the sensor 102 is connected to the first
, And the two image sensors may be individually configured, or two blocks of one sensor may be configured by the first image sensor and the second image sensor, respectively. The second image sensor may be used. Hereinafter, in the present embodiment, a case where two blocks of one sensor are used as a first image sensor and a second image sensor, respectively, will be described as an example.

Hereinafter, the camera of this embodiment will be described in more detail. FIG. 2 is a block diagram showing the configuration of the camera shown in FIG. 1 in more detail. In the figure, components denoted by the same reference numerals as those in FIG. 1 indicate the same components as those in FIG. As shown in the drawing, in the present embodiment, an optical system 101 includes an imaging lens 201 and an AF optical system that forms a light beam from an object guided through the imaging lens 201 by pupil division and forming an image. 202. The AF processing circuit 104 includes an AF monitor circuit 203 that monitors a video signal output by the sensor 102,
A filter circuit 204 for applying a frequency band limitation to the video signal output from the sensor 102 and outputting the image signal, and an AF control circuit 205 as a focus detection unit for detecting a focus position, calculating a driving amount of the photographing lens 102, and the like. ing.

Next, an operation sequence when detecting a focal point by such a three-dimensional display device of a camera will be described.
This will be described with reference to FIG. First, a subject area to be subjected to focus detection is determined (ST1401). For example, the subject area corresponding to the center of the finder when the first release is turned on may be set as the subject area for performing focus detection. Subsequently, the sensor 102 is reset (ST1).
402).

Next, when the video signal is fetched, the sensor 1
A process for determining the integration time of each photoelectric conversion element constituting the pixel 02 is performed. First, a peak monitor is performed. This peak monitor is used for the pixel cells S (i, j), S (i + 1, j) of one of the two pixel blocks of the sensor 102 corresponding to the subject region for which the in-focus point is detected.
.., S (i + k, j). These pixel cells are turned on, and the H shift register is turned on (ST1403). At the same time, a timer is started (ST1404), and the peak value (maximum value) of the output values of each pixel cell reaches a predetermined value. It is checked whether or not the monitoring has been completed (ST1405).

Next, a video signal is read. First, V
The shift register takes in the output of the corresponding one-line pixel cell into the H transfer path (ST1406), and then outputs only the necessary ones (that is, only the outputs of the two pixel blocks for focus detection). Reading is performed by scanning the H shift register (ST1407). The read video signal is output from the output circuit, and after the high frequency component is removed by the filter circuit, the A / D conversion circuit outputs the A / D signal.
D conversion is performed (ST1408). The A / D converted video signal is subjected to illuminance correction, dark current correction, and the like (ST1).
409), the amount of movement of the photographing lens 102 is calculated by performing a correlation operation and an interpolation operation (ST1410, ST141).
1). Subsequently, an error in the amount of movement caused by the position of the subject area in the focusing area in the light receiving unit sensor 102 is corrected (S
T1412). Then, as described above, the taking lens 1
02 (ST1413), and the in-focus point detection ends.

Next, a camera system according to an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, an independent three-dimensional display device having the display monitor 107 and the lenticular sheet 108 shown in FIG. 2 is configured, and this three-dimensional display device is a single-lens camera including the other components shown in FIG. It shall be connected to a flex camera. FIG. 4 schematically shows the appearance of such a three-dimensional display device. In the figure, reference numeral 1501 denotes a three-dimensional display device.
8 is connected. The three-dimensional display device 1501 is provided with a display unit 1502 including the display monitor 107 and the lenticular sheet 108 attached to the screen of the display monitor 107. The display unit 1502
A focus area display 1503 is shown on the screen, and the position of the focus area display 1503 can be moved by the selector 1504. Therefore, the photographer can set the focus area using the three-dimensional display device 1501. In addition, 3
The three-dimensional display device 1501 is provided with a release button 1505 and a keypad 1506 for mode input, whereby the photographer can instruct focus detection or photographing,
The mode can be set.

Next, an operation sequence for displaying a three-dimensional image will be described with reference to FIG. First,
The selector 1504 of the three-dimensional display device 1501 is operated to set a focus area (ST1601).

Next, step ST1402 shown in FIG.
Reading of a video signal, correlation calculation, and the like are performed in the same manner as in steps ST1412 to ST1412 (ST1602 to ST1612). Finally,
Using the obtained video signal, a pixel shift output display subroutine is executed, and the display unit 15 of the three-dimensional display device 1501 is displayed.
02, three-dimensional display is performed (ST1613). That is, as described above, the video signal output from the control circuit 103 is converted into a three-dimensional video signal by the video output circuit 106,
Display is performed on the display monitor 107. At this time, the optical system 1
01 remains out of focus, the correlation operation (ST
The pixel signal is read out by shifting the timing by the shift amount obtained in step 1612) (ie, shifting the line by the shift amount obtained by the correlation operation).

FIG. 6 is a flowchart showing a pixel shift output display subroutine. In this pixel shift output display subroutine, first, a display indicating that the pixel shift output is to be performed is started (ST1801), and then the shift amount 1 is fetched (ST1802) and compared with a predetermined value L (S180).
T1803). In step ST1803, when the shift amount 1 is smaller than the predetermined value L, it is determined that the camera is in focus,
The video signal is read at a timing corresponding to the shift amount l,
A three-dimensional video is displayed (ST1805). On the other hand, if the shift amount l is equal to or more than the predetermined amount L in step ST1803, it is determined that the camera is out of focus, a message indicating that the camera is out of focus is displayed, and the first release is turned on (in-focus state). (ST180) to the photographer.
4) Read the video signal and display a three-dimensional video (ST1805).

Thereafter, when the release button 1505 of the three-dimensional display device 1501 is turned on, the focus detection sequence shown in FIG. 3 is executed (first release), and subsequently, photographing is performed (second release).

[0021]

According to the present invention, since the display device separated from the camera body is provided with the area setting means for setting the position of the focus area, a camera system capable of performing a smooth remote operation is provided. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing a configuration of a camera according to a reference embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the camera shown in FIG. 1 in more detail.

FIG. 3 is a flowchart showing an operation sequence when detecting a focal point;

FIG. 4 is an external view schematically showing a camera system according to the embodiment of the present invention.

FIG. 5 is a flowchart showing an operation sequence when displaying a three-dimensional video.

FIG. 6 is a flowchart showing a pixel shift output display subroutine.

[Explanation of symbols]

 1501 3D display device 1502 Display section 1503 Focus area display 1504 Selector 1505 Release button 1506 Keypad for mode input 1507 Cable 1508 Single lens Reflex camera

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Claims (2)

[Claims] 1. A camera body comprising: a camera body; a display monitor for displaying image data captured by the camera body and a focus area; and area setting means for setting a position of the focus area. And a communication unit for communicating the image data and the area setting information between the camera body and the display device. 2. The camera system according to claim 1, wherein the display monitor is a three-dimensional display device.