JPH1155652A - Sensor interlocking still image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily retrieve a desired image in a short time by picking up a still image in a photographic area to record the image signal when a human body is detected, outputting a command signal when the human body is detected in an index area that is set in a part of a detection area and adding an index signal to an image signal with the signal. SOLUTION: A 1st PIR sensor 2a sends a detection signal (a)to a control circuit 5 while a person A crosses in front of a sensor part 1 in the direction of an arrow G and is within a 1st detection area 4a and a 2nd PIR sensor 2b sends a detection signal (b) to the circuit 5 while he is inside a 2nd detection area 4b. A photographic command circuit 6 records a still image signal d which is inputted from a digital camera 7 in a card type memory 10 once in several seconds while the signals (a) and (b) are inputted. An index adding means 12 sends an index signal (f) that is necessary for retrieval to a still image recording circuit 9 while the person A is in an area 4c for index because the signals (a) and (b) are simultaneously inputted to the circuit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor-linked still image recording apparatus for detecting a person passing a predetermined place with a sensor and recording the still image as a still image.

[0002]

2. Description of the Related Art In a conventional recording apparatus of this type, a passive infrared sensor (hereinafter, referred to as a "PIR sensor") detects a person passing a predetermined place and records the moving image with a video camera. Based on the detection signal of the sensor,
There is a configuration in which an index signal is recorded in a portion of an image to be recorded, and when the recorded tape is played back later, the cue is performed by the index signal.

[0003]

However, in a conventional recording apparatus, a long time is required to search for a desired image because a video tape must be fast-forwarded for each photographing unit to be viewed during reproduction. Was. In order to solve this problem, there is a system in which only one still image is recorded by a camera based on a detection signal of a sensor. However, it is difficult to identify a person because the still image has a profile or poor image. There are cases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a sensor-linked still image recording apparatus capable of easily retrieving a desired image in a short time even when a plurality of still images are recorded. The purpose is to get.

[0005]

A sensor-linked still image recording apparatus according to the present invention comprises a plurality of sensors for detecting a human body in each detection area, and an imaging area including the detection area when the sensor detects a human body. Imaging means for capturing a still image of the subject, image recording means for recording an image signal from the imaging means, and a command for detecting and instructing a human body present in an index area set in a part of the detection area of the plurality of sensors. An index command circuit for outputting a signal; and index adding means for adding an index signal to an image signal obtained by imaging a human body in the index area based on the command signal.

According to the present invention, an index signal is added to a still image of a person in the index area and recorded. Therefore, even when there are a plurality of still images of a person in the detection area, the still images in the index area can be easily searched. By selecting an appropriate area such as an area located in the center of the imaging area of the camera or an area where a person easily faces the camera as the index area, the image of the person can be improved.

[0007] One detection area of the plurality of sensors can be set as the index area.

[0008] Further, a pair of the sensors can be set, and an overlapping portion of the detection areas of the two sensors can be set as the index area.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view showing one embodiment of the present invention. In the figure, a sensor unit 1 includes
The second PIR sensors 2a and 2b and each PIR sensor 2
The first and second optical systems that define the detection areas a and 2b
Fresnel lenses 3a and 3b, and the first PIR sensor 2a has a first detection area 4a
However, a second detection area 4b is set in the second PIR sensor 2b, and a part of the two detection areas 4a and 4b that overlaps is set as an index area 4c. When the person A moves in front of the sensor unit 1 so as to cross in the direction of the arrow G, the first PIR sensor 2a sends the detection signal a to the control circuit 5 while the person A is in the first detection area 4a. Then, while in the second detection area 4b, the second PIR sensor 2b sends the detection signal b to the control circuit 5
To send to.

A photographing command circuit 6 constituting the control circuit 5
Sends the photographing command signal c to the digital camera 7 and the image recording means 8 constituting the imaging means while the detection signals a and b are being input, and the still image recording circuit 9
Until the person A exits the detection areas 4a and 4b, that is, while the detection signal a or b is being output, the still image signal d input from the digital camera 7 is stored in the card type memory 10 for several seconds. Record still images at the rate of the number of times.
The digital camera 7 has a wide imaging area 15 including the detection areas 4a and 4b, and the index area 4c is located at the center of the imaging area 15 of the digital camera 7.

Here, it is possible to record the still image signal d several times per second by setting the digital camera 7 to the continuous shooting mode. In this case, the memory 10 is composed of a flash memory and a frame memory. Composing the still image signal d
Are once stored in the frame memory, and are sequentially recorded in the flash memory.

At this time, while the person A is in the indexing area 4c, the detection signals a and b are simultaneously input to the control circuit 5, and upon receiving this input, the index command circuit 11 in the control circuit 5 , A command signal e to the index adding means 12.
The index adding unit 12 sends an index signal f obtained by digitizing the photographing date and time, the index number, and other data necessary for the search to the still image recording circuit 9, and the still image recording circuit 9 outputs the index signal f. An index signal f is added to the still image signal d input at or immediately after the timing,
Record at 0. The index signal f is added to, for example, an address column at the beginning of the still image signal d.

In the still images recorded in the memory 10 as described above, if the index signal is searched in the recording order, only the still images when the person A is in the index area 4c can be sequentially viewed in the recording order. If the image taken for indexing is unclear, such as when the image is facing sideways or backward, it is sufficient to look at the still images before and after that. Also, by searching by shooting date and time,
Still images at a specific time zone or at a specific time can be picked up and viewed. Therefore, a desired still image can be searched in a short time. Here, if the digital camera 7 and the index area 4c are set, for example, toward the entrance of the room, an index signal is added to a still image obtained by capturing a front image of a person entering from the entrance. , Useful still images are searched.

FIG. 2 is a perspective view showing a sensor unit according to another embodiment of the present invention. In FIG. 2, the first
Lens 3c sets a central index area 4c with respect to the first PIR sensor 2m, and the second Fresnel lens 3d has two index areas 4c with respect to the second PIR sensor 2n. The detection area 4d is set. Detection signal m of first PIR sensor 2m and second PIR
The detection signal n of the sensor 2n is inputted to the photographing command circuit 6 and the index command circuit 11 of the control circuit 5, respectively.
The photographing command signal c is sent to the digital camera 7 and the image recording means 8 constituting the image pickup means, and the still image recording circuit 9 receives the input from the digital camera 7 until the person A exits the detection areas 4b and 4a. The still image signal d is recorded in the card type memory 10 at a rate of once every several seconds.

The index command circuit 11 sends a command signal e to the index adding means 12 when the detection signal m is input. The index adding means 12 sends an index signal f obtained by digitizing the photographing date and time, the index number, and other data necessary for the search to the still image recording circuit 9, and the still image recording circuit 9 inputs the index signal f at that time. The still image signal d is recorded in the memory 10 in addition to the still image signal d.

[0016]

According to the present invention, there is an effect that a sensor-linked still image recording apparatus capable of searching for a desired photographed image in a short time by searching an index signal for a recorded still image. .

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a sensor-linked still image recording device according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a configuration of a sensor unit according to another embodiment of the present invention.

[Explanation of symbols]

1 Sensor part, 2, 2a, 2b, 2m, 2n PIR sensor, 3, 3a to 3d Fresnel lens, 4a, 4b,
4d, 4p to 4t: detection area, 4c: index area,
5 control circuit, 6 photographing command circuit, 7 digital camera (imaging means), 8 image recording means, 9 still image recording circuit, 10 memory, 11 index command circuit, 12 index adding means, 15 ... imaging area, e ... command signal, f ... index signal.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiko Matsumoto 4-7-5 Onohama, Otsu City, Shiga Prefecture Within Optex Corporation (72) Inventor Hiroshi Makino 4-7-5 Onohama, Otsu City, Shiga Prefecture Optex (72) Inventor Takahiro Ohashi 4-7-5 Nonohama, Otsu City, Shiga Prefecture Within Optex Corporation (72) Inventor Akihiko Hayashi 4-7-5, Oninohama, Otsu City, Shiga Prefecture Optex Corporation

Claims (3)

[Claims] 1. A plurality of sensors for detecting a human body in each detection area, an imaging unit for capturing a still image of an imaging area including the detection area when the sensor detects a human body, and an image from the imaging unit An image recording unit that records a signal, an index command circuit that detects a human body present in an index area set in a part of the detection area of the plurality of sensors and outputs a command signal, based on the command signal, A sensor-linked still image recording apparatus comprising: an index adding unit that adds an index signal to an image signal obtained by imaging a human body in the index area. 2. The apparatus according to claim 1, wherein one of the plurality of sensors has a detection area set as the index area. 3. The sensor-linked still image recording apparatus according to claim 1, wherein a pair of the sensors is provided, and a portion where detection areas of both sensors overlap is set as the index area.