JP4331349B2 - TV door phone device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a television doorphone device that can monitor an image around an entrance cordless handset in an indoor parent device, and more particularly to a television doorphone device that facilitates visitor identification.
[0002]
[Prior art]
Conventionally, there has been a TV door phone device that can monitor a visitor's image indoors, record an image of a visitor who has performed a call operation during absence, and reproduce it after returning home.
[0003]
As shown in FIG. 2, this type of TV door phone apparatus includes an entrance slave device 100 installed outdoors, a master device 200 installed indoors, and a recording unit 300 connected to the master device 200. Yes. The entrance slave device 100 includes a camera 102 that captures the surroundings of the entrance slave device, a speaker 103 and a microphone 104 for making a call between the master device 200, and a call button 105 for notifying the visit and calling the master device 200. Are provided, and an interface 101 connected to each of them for transmitting and receiving signals to and from the parent device 200 is provided.
[0004]
The base unit 200 includes an interface 201 for transmitting and receiving signals to and from the interface 101 of the front door slave unit 100. The interface 201 includes a monitor 202 for displaying an image captured by the camera 102 of the front door device 100, a speaker 203 and a receiver 204 for making a call with the front door device 100, and a CPU 205 for controlling these. And are connected.
[0005]
The recording unit 300 includes an interface 301 that transmits and receives signals to and from the interface 201 of the parent device 200. The interface 301 converts an analog image signal sent from the camera 102 of the entrance cordless handset 100 into a digital signal for recording, and converts the recorded digital signal into an analog signal for display on a monitor. A D / A converter 311 is connected and a CPU 307 is connected. The CPU 307 includes a timer 305 for measuring elapsed time based on a signal from the CPU 307, an outing button 310 for setting an “outing mode” for storing an image signal sent from the camera 102 of the front door set 100, and control by the CPU 307. A memory controller 312 that stores a digital signal from the A / D / D / A converter 311 in the DRAM 304 and outputs a digital signal stored in the DRAM 304 to the A / D / D / A converter 311; A playback button 309 for displaying the stored video on the monitor 202 of the parent device 200 is connected.
[0006]
In such a TV door phone apparatus, first, when the “outing mode” is set by the outing button 310 of the recording unit 300, when the calling button 105 of the front door unit 100 is pressed during the outing mode, the calling signal is transmitted to the interface. 101, input to the CPU 205 of the base unit 200 through the interface 201, and a call detection signal from the CPU 205 is input to the CPU 307 through the interface 301 of the recording unit 300 to detect the entrance call. In the recording unit 300, the timer 305 is driven by the call detection signal from the CPU 307 and measurement of the elapsed time is started, and the analog video signal output from the camera 102 of the entrance slave unit 100 is transmitted through the interface 101, the interface 201, and the interface 301. The signal is sent to the / D / D / A converter 311, digitized, and output to the memory controller 312. A predetermined time elapse signal is output to the CPU 307 3 seconds after the start of measurement from the timer 305, and a storage signal is output from the CPU 307 that has received the predetermined time elapse signal to the memory controller 312. The video signal digitized by the / D / D / A converter 311 is stored in the DRAM 304, and the video around the entrance unit 100 is recorded.
[0007]
The video recorded in this way can be played back when the playback button 309 of the recording unit 300 is pressed and a playback signal is input to the CPU 307. The CPU 307 detects the playback signal and sends the playback signal to the CPU 205 via the interface 301 and the interface 201. Is output. As a result, the monitor 205 is turned on by the CPU 205. The CPU 307 drives the memory controller 312 to convert the digital video signal stored in the DRAM 304 into an analog video signal by the A / D / D / A converter 311, and sends the analog video signal to the monitor 202 through the interface 301 and the interface 201. In this way, the recorded video around the entrance is displayed on the monitor 202 and reproduced.
[0008]
[Problems to be solved by the invention]
In such a television door phone device, an image taken by the camera 102 is recorded 3 seconds after the call button 105 of the front door device 100 is operated. Thus, since the recording is performed only once 3 seconds after the operation of the call button 105, the visitor moves out of the shooting range of the camera 102, for example, when the visitor moves his face, and the shooting range is not necessarily limited. However, it was not always possible to record from the front. For this reason, even if the recorded video is reproduced, the visitor may not be easily identified.
[0009]
The present invention has been made to solve the above-described problems, and provides a TV door phone device that can increase the probability that a visitor is photographed by a camera of an entrance cordless handset and can easily identify the visitor. With the goal.
[0010]
[Means for Solving the Problems]
In order to achieve such an object, the TV door phone apparatus according to the present invention is configured such that when the call button is operated on the entrance cordless handset, the video of the entrance from the camera is stored in the non-volatile memory of the recording unit by operating the out button of the recording unit. A television doorphone device that records and plays back the video of the entrance recorded on the recording unit by operating the playback button of the recording unit on the monitor of the master unit, and the recording unit records the video of the entrance at a time. A timer for setting the time, a counter for setting the number of times of recording the entrance video n (n is a positive integer of 2 or more) times, and image data and capture of the entrance video recorded at a time each time N-divided screen image data by function is recorded in a non-volatile memory, and the image data recorded in the non-volatile memory is displayed as a video on a monitor. It is obtained by an image compression extendible codec fit.
[0011]
According to such a TV door phone apparatus, since the video of the visitor is recorded a plurality of times at an appropriate time, the probability that the visitor's face can be easily identified is included in any of the multiple videos Therefore, the occurrence of a situation in which a visitor cannot be identified can be significantly reduced. Also, by dividing the monitor screen and displaying it simultaneously, it is possible to confirm the video recorded over a plurality of times at a time, so that it can be recognized efficiently and easily.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the television door phone device of the present invention will be described with reference to the drawings.
[0013]
As shown in FIG. 1, the television door phone apparatus includes an entrance cordless device 1 installed outdoors, a master device 2 installed indoors, and a recording unit 3 connected to the entrance cordless device 1 and the master device 2. Composed.
[0014]
The entrance device 1 includes a camera 12 for photographing the surroundings of the entrance device, a speaker 13 and a microphone 14 for making a call between the master device 2, and a call button 15 for notifying the visit and calling the master device 2. Are provided, and an interface 11 connected to each of them for transmitting and receiving signals to and from the parent device 2 is provided.
[0015]
The base unit 2 is provided with an interface 21 for transmitting and receiving signals to and from the interface 11 of the front door unit 1. The interface 21 includes a monitor 22 for displaying an image photographed by the camera 12 of the front door 1, a speaker 23 and a receiver 24 for calling with the front door 1, and a CPU 25 for controlling these. And are connected.
[0016]
The recording unit 3 is provided with an interface 31 for transmitting and receiving signals to and from the interface 11 of the entrance slave unit 1 and the interface 21 of the master unit 2. In the interface 31, a digital video codec 32 that converts an analog image signal sent from the camera 12 of the entrance cordless handset 1 into a digital signal in order to store it, and converts the recorded digital signal into an analog signal in order to output it on a monitor. And the CPU 37 are connected. The CPU 37 measures a predetermined elapsed time set as an appropriate time for imaging a visitor based on a measurement start signal from the CPU 37 and outputs a progress signal to the CPU 37. A JPEG codec 33 that is a codec that compresses a digital signal from the digital video codec 32 and stores it in the DRAM 34 under the control of the input CPU 37 is connected. Further, the CPU 37 is connected to a flash ROM 38 which is a non-volatile memory that reads and saves data stored in the DRAM 34 and records the video of the entrance slave 1 n (n is a positive integer of 2 or more) times. A counter 36 for setting the number of times is connected. Further, the CPU 37 has an outing button 30 for setting an “outing mode” for storing an image signal sent from the camera 12 of the front door unit 1, and a monitor 22 of the base unit 2 for displaying the stored image. The playback button 39 is connected.
[0017]
The operation of such a delhi doorphone device will be described.
[0018]
The “outing mode” is set by operating the outing button 30 of the recording unit 3. When the call button 15 of the entrance slave unit 1 is pressed while the outing mode is set, the CPU 25 of the master unit 2 detects the call via the interface 11 of the entrance slave unit 1 and the interface 31 of the master unit 2, and the entrance The CPU 37 of the recording unit 3 detects a call via the interface 11 of the machine 1, the interface 31 of the master unit 2, and the interface 21 of the recording unit 3. The CPU 25 of the master unit 2 that has detected the call drives the camera 12 of the entrance slave unit 1, and the CPU 37 of the recording unit 3 outputs a measurement start signal to the timer 35 to start the timer 35 and set the counter 36 to 0. To do. An analog signal output from the camera 12 is output to the digital video codec 32 via the interface 11 of the front door unit 1 and the interface 31 of the recording unit 3, and is converted into a digital video signal by the digital video codec 32. A measurement signal is output to the CPU 37 after elapse of a set time from the timer 35, and a digital video signal is output from the digital video codec 32 to the JPEG codec 33 under the control of the CPU 37 that has input the measurement signal. The digital video signal is compressed by the JPEG codec 33 and stored in the DRAM 34 as 1/1 size image data. At this time, using the capture function of the JPEG codec 33, the divided image data reduced to 1 / n size is also created and stored in the DRAM 34. Thereafter, the image data of 1/1 size is read from the DRAM 34 by the JPEG codec 33 under the control of the CPU 37, transferred via the CPU 37, and one video imaged by the camera 12 of the entrance unit 1 is transferred to the flash ROM 38. Saved. Here, n is a positive integer of 2 or more. At this time, the CPU 37 checks the count number of the counter 36, and when the count number has not reached n-1, the counter number is incremented by 1, and the timer 35 outputs a measurement start signal again to start measuring the set time. Let The above operation is repeatedly performed while the count number of the counter 36 does not reach n−1 times, and n-divided screen image data in which 1 / n-sized divided image data is arranged in a tile shape is created in the DRAM 34. Thereafter, the n-divided screen image data is read from the DRAM 34 by the JPEG codec 33 under the control of the CPU 37, transferred via the CPU 37, and n times of image data captured by the camera 12 of the entrance unit 1 are transferred to the flash ROM 38. Saved as split screen image data. When the count number of the counter 36 has reached n−1, the CPU 37 does not output the measurement start signal of the timer 35. Further, the driving of the camera 12 is stopped by a control signal from the CPU 25 of the parent device 2, and photographing around the entrance child device 1 is stopped.
[0019]
Thus, the reproduction of the n-division screen image data stored in the flash ROM 38 is performed by pressing the reproduction button 39 of the recording unit 3 and detecting the reproduction signal by the CPU 37. When a reproduction signal output from the CPU 37 is input to the CPU 25 via the interface 31 and the interface 21 of the parent device 2, the monitor 22 is turned on under the control of the CPU 25. In the recording unit 3, the CPU 37 extracts n-division screen image data and 1/1 size image data stored in the flash ROM 38, transfers them to the DRAM 34, and outputs a data decompression command to the JPEG codec 33. In the JPEG codec 33, data is read from the DRAM 34, decompressed to the original digital video signal, and then output to the digital video codec 32. In the digital video codec 32, the one-screen image data is converted into analog one-screen image data and sent to the monitor 22 via the interface 31 and the interface 21 of the master unit 2, and the recorded video around the entrance slave unit 1 is reproduced. Is done.
[0020]
The above description is an explanation of an embodiment of the present invention. The present invention is not limited to this, and the recording time interval is not limited to this. As long as it is an interval, recording may be performed after a set time, such as after 1 second, after 3 seconds, or after 6 seconds, not at regular intervals.
[0021]
【The invention's effect】
As is clear from the above description, according to the TV door phone device of the present invention, when the user goes out, the entrance door is held several times (n times) after an appropriate time has elapsed since the visitor presses the call button of the entrance handset. Since the video around the aircraft was recorded, and the video recorded n times was divided into n screens and displayed simultaneously on the monitor, the visitor who operated the call button was out of the camera's shooting range and was not displayed on the screen. Can be prevented, and visitors can be easily identified.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a television door phone device of the present invention.
FIG. 2 is a block diagram showing a conventional TV door phone device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Entrance cordless handset 12 ... Camera 15 ... Call button 2 ... Base phone 22 ... Monitor 3 ... Recording unit 30 ... ... Exit button 33 ... JPEG codec
35 ... Timer 36 ... Counter 38 ... Flash ROM (non-volatile memory)
39 ... Play button

Claims (1)

When the call button (15) is operated on the entrance cordless handset (1), the video of the entrance from the camera (12) is operated by the outing button (30) of the recording unit (3), and the recording unit non-volatile memory (38 ) And playing the video of the entrance recorded on the recording unit by operating the playback button (39) of the recording unit on the monitor (22) of the main unit (2),
The recording unit sets a timer (35) for setting a time to record the entrance video at a time, and sets the number of times to record the entrance video n times (n is a positive integer of 2 or more). The counter (36) and the video of the entrance recorded at the time are recorded in the nonvolatile memory as image data of each time and n-division screen image data by the capture function, and the image recorded in the nonvolatile memory A television door phone apparatus comprising a codec (33) capable of image compression / decompression for displaying data as video on the monitor.

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