JP3763675B2 - TV door phone system and recording method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording unit for recording video and a recording method in a television doorphone that displays a voice and a video of a visitor, and more particularly to discriminating a playback order, a display mode, a storage mode, and the like of recorded video according to the image. To improve convenience during playback.
[0002]
[Prior art]
Unlike an intercom that displays only audio, a television door phone has a built-in television camera in a child device installed at a front door or the like, and an image projected by this camera is displayed on the monitor of the parent device.
[0003]
It has been known for a long time to record an image of this television doorphone so that it can be reproduced when necessary, and is described in Japanese Patent Laid-Open Nos. 6-62411 and 7-131781.
[0004]
However, the devices described therein are provided with a recording mechanism in a master unit (TV door phone master unit) provided with a monitor, and the configuration of the master unit is different from that of a conventional TV door phone. Therefore, if a user who has already installed a TV doorphone tries to use this recording function, the existing device must be removed and this master unit must be newly installed, resulting in a considerable economic burden. .
[0005]
The group of inventors of the present invention has developed a recording unit that can record an existing TV doorphone by simply using the existing TV doorphone master unit and installing it near the master unit.
[0006]
As shown in FIG. 5, the television doorphone system including the recording unit includes a camera doorphone slave unit 1 with a built-in TV camera, a recording unit 2 for recording a still image extracted from the video of the TV camera, and a monitor. The recording unit 2 is connected between the camera doorphone slave unit 1 and the TV doorphone master unit 4 using connection lines 61 and 62.
[0007]
The camera doorphone slave unit 1 installed at the entrance or the like includes a television camera 11 that takes a picture, a speaker 13 and a microphone 14 for voice call, and a call switch 12 that a visitor presses with a finger.
[0008]
The recording unit 2 includes a playback button 21 and a recording button (save button) 22 and is supplied with AC 100V as a power source.
[0009]
In addition, the TV door phone base unit 4 includes a handset 41 used for a voice call, a monitor 43 that displays a video of the TV camera 11 and a still image recorded in the recording unit 2, and a camera start button 42 that starts the TV camera 11. AC100V is supplied as a power source.
[0010]
The recording unit 2 is installed near the TV doorphone master unit 4 so that the playback button 21 and the save button 22 can be operated while watching the monitor 43 of the TV doorphone master unit 4.
[0011]
Note that a plurality of TV doorphone slave units equipped with a monitor can be further connected to the TV doorphone master unit 4, but description of the TV doorphone slave unit is omitted here.
[0012]
In FIG. 6, the block diagram of each part which comprises this television door phone system is shown.
[0013]
The camera doorphone slave unit 1 emits audio from the CCD camera 11 for photographing, a video signal modulation unit 16 that modulates a signal photographed by the CCD camera 11 into a video modulation signal such as FM, and the TV doorphone master unit 4. The power supplied from the speaker 13, the microphone 14 for picking up the voice of the visitor, the audio signal processing unit 17 for processing the audio signal, the call switch 12, and the TV doorphone master unit 4 is supplied to each unit of the camera doorphone slave unit 1. It has a handset power supply 15 to distribute.
[0014]
The recording unit 2 also includes a video signal demodulator 23 that demodulates the video modulation signal sent from the camera doorphone slave unit 1 into a normal video signal (such as NTSC) and converts it into a digital signal, and an image memory 24 that records the image. A video signal modulation unit 25 that converts recorded image data into an analog signal and modulates it into a video modulation signal such as FM during reproduction of the recorded image, a write control unit 26 that controls writing to the image memory 24, and an image memory A readout control unit 27 that controls readout from 24, a signal line switching unit 35 that switches signal lines during playback, and a call detection unit 28 that detects that the call switch 12 of the camera doorphone slave unit 1 has been pressed. The storage button 22 for inputting an image storage instruction, the playback button 21 for inputting a playback instruction, and the supplied AC 100 V power are distributed to each part of the recording unit 2. And a power supply circuit 29. As the image memory 24, a flash memory capable of recording 16 screens is used, but other recording media such as a DVD can also be used.
[0015]
Similarly to the conventional apparatus, the TV door phone master unit 4 includes a video signal demodulator 44 that demodulates the video modulation signal sent from the camera door phone slave unit 1 or the recording unit 2, a monitor 43 that displays video, An audio signal processing unit 45 for processing an audio signal, a handset 41 used for a call with the camera doorphone slave unit 1, a hook switch 50 indicating a hook state of the handset 41, and a call switch 12 of the camera doorphone slave unit 1 are provided. A call detection unit 46 that detects that the button is pressed, a ringing tone generation unit 48 that generates a ringing tone when the call switch 12 is pressed, and a power supply circuit 47 that supplies power to the camera doorphone slave unit 1. A camera activation button 42 that activates the camera doorphone slave unit 1 and a control unit 49 that controls each part of the television doorphone master unit 4 are provided.
[0016]
In this system, when a visitor presses the call switch 12 of the camera doorphone slave unit 1, the call detection unit 46 of the TV doorphone master unit 4 detects this and transmits it to the control unit 49. In response to this, the control unit 49 causes the power supply circuit 47 to supply power to the camera door phone slave unit 1, generates a ringing tone from the ringing tone generation unit 48, and activates the video signal demodulation unit 44.
[0017]
In the camera doorphone slave unit 1 that has received power supply, the CCD camera 11 starts photographing, and the video signal modulated by the video signal modulation unit is sent to the recording unit 2 and the TV doorphone master unit 4. The video signal demodulating unit 44 of the TV door phone main unit 4 that has received the video signal demodulates the video signal, and an image projected by the CCD camera 11 is displayed on the monic 43.
[0018]
When the resident lifts the handset 41 of the TV door phone base unit 4, the control unit 49 that detects the state by the hook switch 50 activates the audio signal processing unit 45. As a result, a call can be made between the speaker 13 and microphone 14 of the camera doorphone slave unit 1 and the handset 41.
[0019]
On the other hand, in the recording unit 2, the call detection unit 28 detects that the call switch 12 of the camera doorphone slave unit 1 has been pressed, and notifies the write control unit 26 of it. In response to this, when the video modulation signal is sent from the camera doorphone slave unit 1, the writing control unit 26 demodulates the normal video signal and stores a still image for one frame in the image memory 24 based on the synchronization signal. Control to write. The video signal written in the image memory 24 is demodulated by the video signal demodulator 23, converted into digital data, and stored in the image memory 24.
[0020]
The writing control unit 26 also controls to write one frame of the video signal sent from the camera doorphone slave unit 1 to the image memory 24 when the save button 22 is pressed by the resident. To do.
[0021]
In addition, even if there are no visitors, the resident can press the camera activation button 42 of the TV door phone master unit 4 and view the video taken by the CCD camera 11 of the camera door phone slave unit 1. At this time, the control unit 49 that has detected that the camera activation button 42 has been pressed supplies power to the camera door phone slave unit 1 through the power supply circuit 47 and activates the video signal demodulation unit 44. The CCD camera 11 of the camera doorphone slave unit 1 to which power is supplied starts photographing, sends a video signal to the TV doorphone master unit 4, and the video is displayed on the monitor 43.
[0022]
In this case, an image is not recorded on the recording unit 2 unless the save button 22 is pressed again.
[0023]
When playing back a still image recorded in the recording unit 2, the resident presses the playback button 21 of the recording unit 2, and then presses the camera start button 42 of the television doorphone master unit 4. When the playback button 21 is pressed, the read control unit 27 of the recording unit 2 controls to read image data for one still image from the image memory 24. The read image data is converted into an analog signal by the video signal modulation unit 25, modulated into a signal such as FM, and sent to the TV door phone base unit 4.
[0024]
In the TV door phone main unit 4, the video signal demodulating unit 44 demodulates the received video signal and displays the demodulated image on the monitor 43 as in the case of displaying the video of the CCD camera 11. In this way, each time the playback button 21 is pressed, the still images recorded in the image memory 24 are displayed one after another on the monitor 43 of the television doorphone master unit 4.
[0025]
[Problems to be solved by the invention]
Thus, in this TV door phone system, when a visitor presses the call switch 12 of the camera door phone slave unit 1, the image taken by the CCD camera 11 is automatically recorded in the recording unit 2. Therefore, even when there is a person who visits while the resident is away, the video when the visitor presses the call switch 12 is recorded.
[0026]
In addition, the video when the call switch 12 is operated does not necessarily indicate that the visitor is in front of the CCD camera 11, and there is no guarantee that the face is facing the CCD camera 11. There are cases where it is not accurately grasped. Therefore, if the resident feels necessary, he / she observes the screen of the monitor 43 when talking to the visitor through the handset 41, and when the face image of the visitor appears, the recording unit appears. By pressing the second save button 22, the visitor's image can be accurately recorded and saved.
[0027]
However, in this TV door phone system, when the recorded image of the recording unit is played back, the recorded images are only displayed on the monitor in order, so the image captured in any situation on the viewer side There is a problem that it is difficult to distinguish. For example, even if an attempt is made to check who has come while the user is away, it is difficult to distinguish among the images that are reproduced in sequence, the images that were taken while the user was away.
[0028]
Further, in the recording unit 2 of this TV door phone system, since the storage capacity of the image memory 24 is finite, when the storage area is exhausted, it returns to the original area and a new image is added on the past image. In this case, there is a problem in that an image that can be overwritten and an image that should be stored without being overwritten cannot be distinguished.
[0029]
The present invention solves these problems, and it is possible to distinguish the playback order, display mode, storage mode, and the like of recorded images for each image, and to provide a recording unit having excellent convenience in playback. It aims at providing and the recording method for it.
[0030]
[Means for Solving the Problems]
Therefore, in the present invention, information for identifying what type of image is attached to an image to be recorded, and a reproduction order and a mark to be displayed are distinguished based on this information.
[0031]
Therefore, it becomes easy to distinguish the reproduced image, and the image recorded while going out can be preferentially reproduced.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
  The invention according to claim 1 of the present invention records an image shot by a camera door phone slave unit and sent to the TV door phone master unit.TV door phone system with recording meansInRecording meansProvided in an image recording means for recording a still image of video, a writing control means for controlling writing of an image to the image recording means, a reading control means for controlling reading of an image from the image recording means, and a camera doorphone slave unit A call detection means for detecting an operation of the designated call switch, and an instruction to record an image on the image recording meansRecording instruction meansAnd playback for instructing playback of the image recorded on the image recording meansInstruction meansAnd going out to set the outing stateAnd setting means,Write control meansRecording instruction meansThe image is written on the basis of the instruction or the detection of the call detecting means, and at least going outGoing out by setting meansRecorded based on the detection of the call detection means when is set,Going outIs recorded so that it can be discriminated from the recorded image based on the detection of the call detection means, and the read control meansInstruction meansWhen the image is read based on the instruction, the reproduction order is adjusted by identifying the image, and the reproduction order can be set according to the type of the image.
[0033]
  According to the second aspect of the present invention, the read control meansGoing out by setting meansImages recorded when is setAs a new imageThe image is read out first, and the image recorded while going out can be preferentially viewed.
[0034]
  According to a third aspect of the present invention, the reading control meansGoing out by setting meansRecorded when is setNewThe image is read with a display mark, and the image recorded while going out is displayed with the mark, which makes it easy to distinguish.
[0035]
  According to a fourth aspect of the present invention, the reading control meansGoing out by setting meansRecorded when is setNewThe image is read with data indicating the recording order, and it can be seen what number of images recorded while going out is displayed.
[0036]
  The invention according to claim 5 is for going out.Going out by setting meansDisplay means for displaying that an image has been recorded in a state in which is set, and the display means can know that an image has been recorded while going out.
[0037]
  In the invention according to claim 6, the write control means comprises:Recording instruction meansRecorded images based onAs saved imageRecord it so that it can be identified, and avoid overwriting this image.Savethe imageBy means of canceling storageWhen the storage is canceled, the writing to the image recording unit is controlled so that the image can be overwritten, and the image can be stored according to the type of the image.
[0038]
  In the invention according to claim 7, the reading control means isRecording instruction meansRecorded according to instructionsSaveThe image is read with a display mark, and the image to be stored is displayed with the mark, so that it is easy to distinguish.
[0039]
  The invention according to claim 8 records a still image of a video shot by a camera door phone slave unit and sent to the TV door phone master unit.TV door phone systemIn the recording method, an image recorded when going out is distinguished from an image recorded when not going out, and the image recorded when going out is preferentially played back during playback. You can easily see which image is recorded on the screen.
[0040]
  According to the ninth aspect of the present invention, an image recorded at the time of going out is displayed with a display mark and is reproduced, so that it is readily known which image is recorded while going out.
[0041]
  The invention described in claim 10 records a still image of a video shot by a camera doorphone slave unit and sent to the TV doorphone master unit.TV door phone systemIn the recording method, the image to be saved is recorded separately from the image that can be overwritten, and at the time of playback, the display mark is added to the image to be saved and played back. You can see immediately.
  The invention according to claim 11 is such that the read control means displays the new image, the rewritable image, and the saved image in order for each group, which is easy to understand during reproduction.
  The invention according to claim 12 is such that the writing control means controls writing to the image recording means as an overwritable image for a new image that has been seen and which has not been saved by the saving instruction means. Yes, it is possible to select an image to be stored.
  The invention described in claim 13 includes a recording instruction unit, a storage instruction unit, and a storage cancellation unit. 1 It consists of two save buttons. When this button is pressed during a call, recording is performed. When this button is pressed during playback of a new image, saving is instructed. When this button is pressed during playback of a saved image, saving is canceled. By operating in this way, the number of parts can be reduced.
[0042]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0043]
FIG. 2 shows an appearance of a television door phone system including the recording unit 2 of the embodiment. The configuration of the camera doorphone slave unit 1 and the TV doorphone master unit 4 in this system is the same as that of the conventional apparatus (FIG. 5). Further, the external appearance of the recording unit 2 is different in that it includes an outing display button 30 that is operated when going out. When the outing display button 30 is pressed (set), the lamp inside is turned on, and if a visitor image is recorded while this lamp is on, the lamp display blinks. Switch to
[0044]
The image recorded by pressing the save button 22 is saved as a saved image without being overwritten. If the save button 22 is pressed again during playback of this image, the save state is canceled and if there is not enough recording area, a new image is also overwritten on this image. Therefore, the save button 22 is used for operating save and release.
[0045]
FIG. 1 shows the internal configuration of the recording unit 2 of the embodiment. This recording unit 2 includes a video signal demodulator 23, an image memory 24, a video signal modulator 25, a write controller 26, a read controller 27, a call detector 28, and a save button 22 as in the conventional apparatus (FIG. 6). And a playback button 21 and a power supply circuit 29, an outing display button 30 that is set when going out, a display lamp 32 that displays a set state of the outing display button 30, and a save cancel button that cancels the save state of the stored image ( 2, and a display data memory 33 in which a display mark to be displayed together with the image is stored as an attached area of the image memory 24.
[0046]
As shown in FIG. 3, the display data memory 33 stores display marks corresponding to the values of i representing the type of image and j representing the recording order. i = 1 represents an image recorded with the outing display button 30 set (this is referred to as a “new image”), and the new image includes a black circle and a numerical value indicating the recording order as a display mark. Attached. i = 2 represents an image recorded by the operation of the save button 22 (this is referred to as “stored image”), and the stored image has a numerical value indicating the letter M and the recording order as a display mark. Is attached. When the saving is canceled, this display mark is deleted. i = 2 represents another image (this is referred to as an “overwrite image”), and nothing is attached to the overwrite image as a display mark.
[0047]
Next, the operation of the recording unit 2 will be described.
[0048]
When a visitor presses the call switch 12 of the camera doorphone slave unit 1, the call detection unit 28 of the recording unit 2 detects it and transmits it to the write control unit 26, and the write control unit 26 Control is performed so that a still image of one frame of the video signal sent from 1 is written in the image memory 24.
[0049]
At this time, the writing control unit 26 attaches the values of i and j as flags to the still image to be written to the image memory 24.
[0050]
When the save button 22 has not been pressed and the outing display button 30 has not been set, i is set to i, and j is set as the recording order in the group with i = 2. Set the value indicating.
[0051]
When a resident who notices a visitor with a ringing tone presses the save button 22 to record the visitor's face reflected on the screen of the monitor 43 while talking on the handset 41 of the TV door phone master unit 4, The writing control unit 26 writes the still image of the video signal sent from the CCD camera 11 at that time into the image memory 24, and i = 3 for this still image and i = 3 as the value of j. A value indicating the recording order in each group is attached.
[0052]
When the resident presses the go-out display button 30 when going out, the display lamp 32 is turned on, and information indicating that the go-out display button 30 is set is transmitted to the writing control unit 26.
[0053]
When the visitor presses the call switch 12 of the camera doorphone slave unit 1 with the outing display button 30 set, the writing control unit 26 receives the detection information of the call detection unit 28 and receives the camera doorphone slave unit. A still image of one frame of the video signal sent from 1 is written in the image memory 24, and the recording order in the group in which i = 1 and i = 1 as the value of j is recorded for this still image. The indicated value is attached.
[0054]
Further, when the outing display button 30 is set, the writing control unit 26 sends a signal notifying the display lamp 32 when an image is written in the image memory 24. In response to this, the display lamp 32 blinks to notify the resident who has returned home that the image has been recorded while going out. The blinking display of the display lamp 32 continues until the outing display button 30 is reset.
[0055]
In the state where the outing display button 30 is set, when the save button 22 is pressed while the CCD camera 11 is activated, 3 representing a saved image is set as i.
[0056]
On the other hand, when the play button 21 is pressed, the read control unit 27 searches the images stored in the image memory 24 for a flag with an i value of 1 and sets i = 1. The image having the largest value of j is read out. At this time, the read control unit 27 reads a display mark corresponding to the combination of i and j from the display data memory 33 together with the reading of the image data.
[0057]
The read image and display mark are modulated into a signal such as FM by the video signal modulation unit 25 and sent to the TV door phone main unit 4, and the image and the display mark are displayed together on the monitor 43. .
[0058]
Next, when the play button 21 is pressed, the read control unit 27 reads an image with the next largest value of j among the images of i = 1, and displays a display mark corresponding to the combination of i and j as display data. Read from memory 33. When there is no image with i = 1, reading is performed in descending order of the value of j in the image with i = 2, and when there is no image with i = 2, the value of j in the image with i = 3 is Read from largest to smallest.
[0059]
Thus, at the time of playback, among the recorded images, first, the new image (i = 1) is played back in order from the newest recording time, and then the overwritten image (i = 2) is recorded at the recording time. New images are played back in order, and finally, saved images (i = 3) are played back in order from the newest recording time. For new images and stored images, display marks indicating their types and recording order are also displayed.
[0060]
When the save button 22 is pressed while the recorded image is being played back with the play button 22, when i = 1 and i = 2, i = 3 and j = i = 3 as the value of the recording order. The value indicating is overwritten and saved as a saved image. When i = 3, when the playback button is pressed, the value indicating the recording order is overwritten in the group of i = 2 and i = 2 as the value of i, and saved as an overwritten image.
[0061]
FIG. 4 illustrates the relationship between the image recording order (a) and the display order (b). In the image memory 24, as shown in FIG. 4A, an image A photographed when a visitor operates the call switch 12 is recorded with a flag 21 (i = 2, j = 1), An image B photographed when the next visitor operates the call switch 12 is recorded with a flag 22. Next, an image C recorded by pressing the save button 22 is recorded with a flag 31, and images D and E taken when a visitor operates the call switch 12 are flagged 23 and 24, respectively. It is attached and recorded.
[0062]
In addition, images F, G, and H taken when a visitor who has visited the user from the time when the outing display button 30 is set to the time when the button is released are operated as flags 11, 12, 13 is recorded.
[0063]
On the other hand, at the time of reproduction, as shown in FIG. 4B, first, images H, G, and F, which are new images (i = 1), in order from the newest recording time, black circles representing the new images and the recording order. Next, images E, D, B, and A, which are overwritten images (i = 2), are reproduced and displayed in order from the newest recording time, and finally, the stored images (i = 3) are displayed. ) Is reproduced and displayed together with the letter M indicating the stored image and the number indicating the recording order.
[0064]
Therefore, the resident who has returned home from the outside can easily check the image of the visitor who is out of the home from the monitor screen.
[0065]
If the save button 22 is pressed during playback of a new image or overwritten image, the writing control unit 26 reads out information on the image being played back from the control unit 27, rewrites and saves the flag of the image. An image.
[0066]
Further, when the save cancel button 34 is pressed during playback of the saved image, the writing control unit 26 reads out information on the image being played back from the control unit 27, rewrites the flag of the image, To do.
[0067]
When all the images are written in the 16 storage areas of the image memory 24, the writing control unit 26 returns to the first area and overwrites the new image. At this time, by looking at the flag of the image already recorded, the image of i = 3 is not overwritten, and only the image of i = 1 and i = 2 is overwritten.
[0068]
With the operation of the writing control unit 26, the saved image is held unless the saving is canceled.
[0069]
As described above, the recording unit can change the order of reproduction or give different display marks according to the type of image, and can change the storage mode. Further, whether or not a specific type of image is recorded can be displayed through external display means such as a lamp.
[0070]
Note that the display order, display marks, the number of storage areas of the image memory, and the like shown here are merely examples, and the present invention is not limited thereto.
[0071]
【The invention's effect】
  As is clear from the above description, the present inventionTV door phone systemCan be reproduced in a form that makes it easy to distinguish the recorded images. In addition, it is possible to preferentially reproduce images recorded while going out, and to notify through the display means that there are images recorded while going out.
[0072]
Also, necessary images can be saved without being overwritten.
[0073]
In addition, the recording method of the present invention makes it possible to reproduce an image in a TV door phone system in an easily distinguishable state.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a recording unit according to an embodiment of the present invention.
FIG. 2 is an external view of a television doorphone system including a recording unit according to an embodiment.
FIG. 3 is a diagram showing data recorded in the display data memory of the recording unit of the embodiment;
FIG. 4 is an explanatory diagram showing a relationship between an image (a) recorded in the recording unit of the embodiment and a displayed image (b);
FIG. 5 is an external view of a conventional TV door phone system;
FIG. 6 is a block diagram showing a configuration of a conventional television door phone system.
[Explanation of symbols]
1 Camera doorphone cordless handset
2 Recording unit
4 TV door phone main unit
11 TV camera
12 Call switch
13 Speaker
14 Microphone
15 Remote power supply
16 Video signal modulator
17 Audio signal processor
21 Play button
22 Save button
23 Video signal demodulator
24 Image memory
25 Video signal modulator
26 Write controller
27 Read controller
28 Call controller
29 Power supply circuit
30 Outing display button
32 Indicator lamp
33 Display data memory
34 Save release button
35 Signal line switching section
41 Handset
42 Camera start button
43 Monitor
44 Video signal demodulator
45 Audio signal processor
46 Call detector
47 Power circuit
48 Ringer generator
49 Control unit
50 Hook switch
61, 62 connecting wire

Claims (13)

In a television doorphone system having a recording means for recording a video photographed by a camera doorphone slave unit and sent to the television doorphone master unit, the recording means includes an image recording means for recording a still image of the video, and the image recording Write control means for controlling the writing of the image to the means, read control means for controlling the reading of the image from the image recording means, and call detection means for detecting the operation of the call switch provided in the camera door phone slave unit. A recording instruction means for instructing recording of an image on the image recording means, a reproduction instruction means for instructing reproduction of an image recorded on the image recording means, and an outing setting means for setting an outing state, It said write control means, an instruction of the recording instruction means, or, writes the image based on the detection of the call detection means With at least the image that recorded based on the detection of the call detection means, based on detection of said call detection means when the out state is not set when the out state is set by the going out setting means The television is recorded so that the recorded image can be identified, and the reading control unit identifies the image and adjusts the reproduction order when reading the image based on an instruction from the reproduction instruction unit. Door phone system . 2. The television door phone system according to claim 1, wherein the read control unit first reads an image recorded when the outing state is set by the outing setting unit as a new image . 3. The television door phone system according to claim 2 , wherein the reading control unit reads out a new image recorded when the outing state is set by the outing setting unit with a display mark. The read control means, the new image recorded when going out condition by the out setting means is set, the television according to claim 3, characterized in that reading denoted by the data indicating the recording order intercom・ System . 2. The television door phone system according to claim 1, further comprising display means for displaying that an image has been recorded in a state where the outing state is set by the outing setting means . The write control means records the image recorded based on the instruction of the recording instruction means so that it can be identified as a saved image, and does not overwrite the image, and the saved image is saved by the save release means. 2. The television door phone system according to claim 1, wherein writing to the image recording means is controlled so as to make an overwritable image when the storage is canceled. 7. The television door phone system according to claim 6, wherein the read control unit reads a stored image recorded based on an instruction from the recording instruction unit with a display mark. In a TV doorphone system recording method that records still images of video that is shot with a camera doorphone slave unit and sent to the TV doorphone master unit, distinguishing between images recorded when going out and images recorded when not going out A recording method for a television doorphone system, wherein recording and playback are performed with priority given to images recorded when going out. 9. The recording method for a television door phone system according to claim 8, wherein the recorded image is reproduced with a display mark attached when the user goes out. In the TV doorphone system recording method, which records still images of video that is shot with a camera doorphone slave unit and sent to the TV doorphone master unit, the image to be saved and the image that can be overwritten are recorded separately and played back. A video doorphone system recording method, wherein an image to be stored is displayed with a display mark and reproduced. 8. The television door phone system according to claim 2, 3, 4, 6, or 7, wherein the read control means displays a new image, an overwritable image, and a saved image in order for each group. Said write control means, once viewed claim 1 or 6, characterized in that to control the writing into the image recording means an image that did not save operation by saving instruction means in the new image as a rewritable image TV door phone system . The recording instruction unit, the storage instruction unit, and the storage cancellation unit, 1 13. The television door phone system according to claim 12, wherein the television door phone system is constituted by two save buttons.

Images