JP2001145089A - Mobile supervisory device, mobile supervisory method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable mobile supervisory device that a user can use at any place, whose data cannot be viewed and falsified by a third party and that can surely secure evidences of criminals and accidents unexpectedly encountered. SOLUTION: A coding section 106 of the mobile supervisory device 1 applies compression coding to a sound picked up by a microphone 110 and an image picked up by a camera 111 to convert them into digital video data and sequentially records the data in a DVD-RAM 112 of a data storage section 108. In the case that a shock detection section 107 detects that a destructive shock is exerted to the mobile supervisory device 1, the data storage section 108 reads the video data having already been recorded in the DVD-RAM 112 and gives the data to a rate conversion section 104. Then the rate conversion section 104 converts the video data into video data at a rate proper to transmission. Then a transmission reception section 105 transmits the stored data whose rate is converted and that are not transmitted to a base station 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable monitoring device for transmitting an image and a sound using a wireless line, a portable monitoring method, and a recording medium storing a program for executing the method. It can be used by users anywhere for collection or self-defense, ensuring that data is not viewed or tampered with by a third party, leaving evidence of a crime or accident that occurs unexpectedly. The present invention relates to a reliable portable monitoring device, a portable monitoring method, and a recording medium.

[0002]

2. Description of the Related Art Conventional portable monitoring devices utilizing wireless communication are disclosed in JP-A-6-319142 and JP-A-10-119142.
These are disclosed in, for example, JP-A-191309 and JP-A-11-41669. For example, a conventional portable monitoring device includes an input device such as a camera or a microphone for inputting images and sounds, a data storage unit including a memory or a hard disk for temporarily recording input data, and a data encoding unit. And a transmitting unit for transmitting data.

In the conventional portable monitoring device configured as described above, first, analog data such as an image or sound input from a camera or a microphone is encoded by an encoding unit to generate digital data. The data is temporarily stored in the data storage unit. Then, the stored data is transmitted by a transmission unit using radio as necessary, and is decoded and displayed on a display device used by another user or a monitor via a public line or the like. .

[0004] Since this portable monitoring device uses wireless communication, there is no restriction on installation conditions, and a small-sized monitoring device can be worn by a user on a daily basis. Thus, for example, when a user encounters a crime or the like, the video can be captured by a portable monitoring device and stored in a recording medium of a mobile terminal, and can be left as evidence. It is used for business.

[0005]

However, in the above-mentioned conventional portable monitoring device, data cannot be transmitted in a place where the radio line is congested or in a place where the radio wave condition is poor, so that the use thereof is limited. Is done. As a result, there is a problem that the merit of the portable monitoring device that can monitor a sudden crime or an accident that cannot be determined when and where it occurs can not be fully utilized. Also,
If the video recorded on the recording medium of the portable terminal is used as evidence, the reliability is low because the portable monitoring device itself may be destroyed by the criminal or the recording medium recording the video may be robbed. There is a problem. Furthermore, in the latter case, it is conceivable that a video recorded on a recording medium may be viewed by a third party, and there is a problem in terms of privacy protection.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and can be used by a user in any place for collecting evidence or for protecting himself / herself. It is another object of the present invention to provide a highly reliable portable monitoring device, a portable monitoring method, and a recording medium that can reliably leave evidence of a crime or accident encountered unexpectedly without being altered.

[0007]

According to a first aspect of the present invention, there is provided a portable monitoring apparatus, comprising: an imaging unit; an audio input unit; an image captured by the imaging unit; Encoding means for encoding the voice inputted by the input means to obtain encoded data, data storage means having a recording medium for holding the encoded data as accumulated data, and detecting an impact applied to the portable monitoring device And transmitting means for wirelessly transmitting the encoded data or the stored data when the impact detecting means detects an impact.

[0008] A portable monitoring device according to claim 2 is
2. The portable monitoring device according to claim 1, wherein, when the shock detecting means detects a shock, the transmitting means preferentially transmits the encoded data or the stored data in a predetermined time zone closer to the time. Things.

Further, a portable monitoring device according to claim 3 is
3. The portable monitoring device according to claim 1, further comprising a rate conversion unit configured to set a rate that is a temporal ratio of a data amount to be transmitted, and to convert the encoded data or the stored data at the rate. When the shock detecting means detects a shock, the rate converting means sets and converts the coded data or the stored data between the predetermined time zone closer to the time and the predetermined time zone far from the time to different rates. The transmitting means transmits the data converted by the rate converting means.

The portable monitoring device according to claim 4 is
The portable monitoring device according to claim 3, wherein the rate conversion unit is configured to detect when the impact detection unit detects an impact.
The rate of the encoded data or the stored data in a predetermined time zone closer to the time is set high, and the rate of the encoded data or the stored data in a predetermined time zone far from the time is set low.

A portable monitoring device according to claim 5 is
5. The portable monitoring device according to claim 1, wherein said transmitting means transmits when a detection result by said impact detecting means is equal to or higher than a predetermined level or when a result of the detection matches a predetermined change pattern. It is.

A portable monitoring device according to claim 6 is
An imaging unit, an audio input unit, an encoding unit that encodes an image captured by the imaging unit and an audio input by the audio input unit to obtain encoded data, and a recording that holds the encoded data as stored data. Data storage means having a medium, operation means for a user to specify desired data to be transmitted among the coded data or the stored data, and data designated by the operation means with priority given to wireless Transmitting means for transmitting.

[0013] A portable monitoring device according to claim 7 is
7. The portable monitoring device according to claim 6, further comprising a rate conversion unit configured to set a rate that is a temporal ratio of an amount of data to be transmitted, and to convert the encoded data or the stored data at the rate. The means sets and converts the data designated by the operation means and the other encoded data or the stored data to different rates, and the transmission means converts the data converted by the rate conversion means. What to send.

The portable monitoring device according to claim 8 is
8. The portable monitoring device according to claim 7, wherein the rate conversion unit sets a high data rate specified by the operation unit and sets a low rate for the other encoded data or the stored data. Things.

[0015] The portable monitoring device according to claim 9 is
The portable monitoring device according to claim 6, 7 or 8,
The portable monitoring device further includes an impact detection unit configured to detect an impact applied to the portable monitoring device, wherein the transmission unit transmits when a detection result by the impact detection unit is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern. Things.

According to a tenth aspect of the present invention, in the portable monitoring device according to the first, second, third, fourth, fifth, sixth, seventh, eighth, or ninth aspects, the transmitting means is determined in advance. And transmitting the encoded data or the stored data to another portable monitoring device capable of communication when communication with the received receiving device is impossible.

Further, a portable monitoring device according to an eleventh aspect is an imaging unit, a voice input unit, and an image captured by the imaging unit and a voice input by the voice input unit are coded to obtain coded data. Encoding means, data storage means having a recording medium for holding the encoded data as accumulated data, and transmitting means for wirelessly transmitting the encoded data or the accumulated data to a predetermined receiving device. The transmitting means transmits the encoded data or the stored data to another portable monitoring device capable of communication when communication with a predetermined receiving device is not possible.

A portable monitoring device according to a twelfth aspect is the portable monitoring device according to the tenth or eleventh aspect, wherein the data transmitted to the other portable monitoring device is transmitted to a predetermined receiving device. Is to ask you to

According to a thirteenth aspect of the present invention, in the portable monitoring device according to the tenth, eleventh or twelfth aspect, the other portable monitoring device holds the received data as provisional storage data. A data storage unit having a recording medium; and a transmission / reception unit for transmitting and receiving the encoded data or the stored data transmitted from the portable monitoring device or the provisional stored data.

According to a fourteenth aspect of the present invention, in the portable monitoring device according to the thirteenth aspect, when the transmitting / receiving means can communicate with a predetermined receiving device, the temporary storage data is stored in the portable monitoring device. The data is transmitted to the receiving device.

A portable monitoring device according to a fifteenth aspect of the present invention is the portable monitoring device according to the thirteenth or fourteenth aspect, wherein the transmission / reception means communicates with a predetermined receiving device when the communication is impossible. The provisional storage data is transmitted to another possible portable monitoring device.

A portable monitoring device according to a sixteenth aspect is the portable monitoring device according to the fifteenth aspect, wherein the other portable monitoring device transmits the data transmitted to the another portable monitoring device in advance. This is to request transmission to a predetermined receiving device.

The portable monitoring device according to claim 17 is a portable monitoring device according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1.
17. The portable monitoring device according to 0, 11, 12, 13, 14, 15 or 16, further comprising an encryption unit for encrypting the encoded data or the stored data or the provisional stored data.

The portable monitoring device according to claim 18 is a portable monitoring device according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1.
18. The portable monitoring device according to 0, 11, 12, 13, 14, 15, 16, or 17, wherein the recording medium is one that can be randomly accessed.

The portable monitoring device according to claim 19 is a portable monitoring device according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 1
In the portable monitoring device described in 0, 11, 12, 13, 14, 15, 16, 17, or 18, the recording medium includes:
It is removable and portable.

The portable monitoring device according to claim 20 is a portable monitoring device according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 1
0,11,12,13,14,15,16,17,18
20. The portable monitoring device according to claim 19, wherein the encoded data is temporarily stored in the recording medium and transmitted as necessary.

A portable monitoring method according to a twenty-first aspect of the present invention provides an imaging step, an audio input step, and an image captured in the imaging step and an audio input in the audio input step to obtain encoded data. An encoding step, a data storage step of storing the encoded data as storage data in a recording medium, an impact detection step of detecting an impact, and when the impact is detected in the impact detection step, the encoded data or the Transmitting the stored data wirelessly.

A portable monitoring method according to a twenty-second aspect of the present invention is the portable monitoring method according to the twenty-first aspect, wherein the transmitting step includes the step of: detecting a shock in the shock detecting step; In which the encoded data or the stored data is preferentially transmitted.

A portable monitoring method according to a twenty-third aspect of the present invention is the portable monitoring method according to the twenty-first or twenty-second aspect, wherein a rate that is a temporal ratio of the amount of data to be transmitted is set, and the encoded data or A rate conversion step of converting the accumulated data at the rate, wherein the rate conversion step includes, when an impact is detected in the impact detection step, a predetermined time zone closer to the time and a predetermined time zone far from the time. The encoded data or the stored data is set at a different rate and converted, and the transmitting step transmits the data converted by the rate converting step.

The portable monitoring method according to a twenty-fourth aspect of the present invention is the portable monitoring method according to the twenty-third aspect, wherein the rate conversion step is a step closer to the time when an impact is detected in the impact detection step. The rate of the encoded data or the stored data in a time zone is set high, and the rate of the encoded data or the stored data in a predetermined time zone far from the time is set low.

A portable monitoring method according to a twenty-fifth aspect of the present invention is the portable monitoring method according to the twenty-second, twenty-third, twenty-third, or twenty-fourth aspect, wherein the transmitting step comprises: It is transmitted at the time or when it matches a predetermined change pattern.

In a portable monitoring method according to a twenty-sixth aspect, an image capturing step, an audio input step, and an image captured in the image capturing step and an audio input in the audio input step are encoded to obtain encoded data. An encoding step, a data accumulation step of retaining the encoded data as accumulated data in a recording medium, and an operation step for a user to specify desired data to be transmitted among the encoded data or the accumulated data. And a transmission step of transmitting the data designated by the operation step with priority by wireless.

A portable monitoring method according to a twenty-seventh aspect of the present invention is the portable monitoring method according to the twenty-sixth aspect, wherein a rate, which is a temporal ratio of the amount of data to be transmitted, is set, and the encoded data or the storage is stored. A rate conversion step of converting data at the rate, wherein the rate conversion step sets and converts the data specified by the operation step and the other encoded data or the stored data to different rates. The transmitting step transmits the data converted by the rate converting step.

A portable monitoring method according to a twenty-eighth aspect of the present invention is the portable monitoring method according to the twenty-seventh aspect, wherein the rate conversion step sets a high data rate specified by the operation step. The rate of the coded data or the stored data other than the above is set low.

A portable monitoring method according to a twenty-ninth aspect of the present invention is the portable monitoring method according to the twenty-sixth, twenty-seventh, or twenty-eighth aspect, further comprising an impact detecting step for detecting an impact, wherein the transmitting step includes the impact detecting step. Is transmitted when the detection result is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern.

The portable monitoring method according to claim 30 is a portable monitoring method according to claim 21, 22, 23, 24, 25, 26, 2.
30. The portable monitoring method according to 7, 28 or 29, wherein the transmitting step includes the step of transmitting the encoded data or the stored data to another portable monitoring device capable of communication when communication with a predetermined receiving device is impossible. Is transmitted.

In a portable monitoring method according to a thirty-first aspect, an image capturing step, an audio input step, and an image captured in the image capturing step and an audio input in the audio input step are encoded to obtain encoded data. An encoding step, a data accumulation step of holding the encoded data as accumulation data in a recording medium, and a transmission step of wirelessly transmitting the encoded data or the accumulation data to a predetermined receiving device, The transmitting step transmits the encoded data or the stored data to another communicable portable monitoring device when communication with a predetermined receiving device is impossible.

A portable monitoring method according to a thirty-second aspect is the portable monitoring method according to the thirty-first or thirty-first aspect, wherein the data transmitted to the other portable monitoring device is transmitted to a predetermined receiving device. Is to ask you to

A portable monitoring method according to a thirty-third aspect is the portable monitoring method according to the thirty-third, thirty-first or thirty-second aspect, wherein the received data is stored as temporary storage data in a recording medium of the other portable monitoring device. A provisional storage step of holding data; and a transmission / reception step of transmitting / receiving the encoded data or the storage data transmitted to the other portable monitoring device or the provisional storage data.

In a portable monitoring method according to a thirty-fourth aspect, in the portable monitoring method according to the thirty-third aspect, the transmitting / receiving step includes transmitting the temporary storage data when communication with a predetermined receiving device is possible. The data is transmitted to the receiving device.

In a portable monitoring method according to a thirty-fifth aspect, in the portable monitoring method according to the thirty-third or thirty-fourth aspect, the transmitting and receiving step is capable of performing communication when communication with a predetermined receiving device is impossible. The provisional storage data is transmitted to another portable monitoring device.

In a portable monitoring method according to a thirty-sixth aspect, in the portable monitoring method according to the thirty-fifth aspect, the other portable monitoring device transmits the data transmitted to another portable monitoring device in advance. The data is transmitted to the determined receiving device.

A portable monitoring method according to a thirty-seventh aspect of the present invention provides a portable monitoring method according to the twenty-first to twenty-second aspects.
7, 28, 29, 30, 31, 32, 33, 34, 35
36. The portable monitoring method according to claim 36, further comprising an encryption step of encrypting the encoded data, the stored data, or the provisional stored data.

The recording medium according to claim 38 is a recording medium according to claim 21, 22, 23, 24, 25, 26, 27, 28,
The portable monitoring method described in 29, 30, 31, 32, 33, 34, 35, 36 or 37 can be read by a computer recorded as a program for causing the computer to execute the method.

A portable monitoring device according to claim 1 of the present invention,
In the portable monitoring method according to the twenty-first aspect and the recording medium according to the thirty-eighth aspect, an image captured by the imaging unit (imaging step) by the encoding unit (encoding step) and input by the audio input unit (audio input step). The audio is encoded to obtain encoded data, and the encoded data is held as accumulated data by a data storage means (data accumulation step) having a recording medium. Then, the shock applied to the portable monitoring device is detected by the shock detecting means (shock detecting step), and when the shock detecting means (shock detecting step) detects the shock, the encoded data or the transmitted data is transmitted by the transmitting means (transmitting step). The stored data is transmitted wirelessly.

As described above, when a destructive impact is applied to the portable monitoring device, video data obtained by encoding images and voices obtained from imaging means such as a camera and audio input means such as a microphone, or encoded video data. After that, the video data recorded on the recording medium is transmitted, so that not only the video data is transmitted only for a predetermined period of time or a predetermined cycle as in the related art, but also when the portable monitoring device is destroyed. It can automatically detect it and automatically transmit the encoded or stored video data to the surveillance person, and provide evidence of crimes or accidents that users with portable monitoring devices may encounter unexpectedly. As a result, the portable monitoring device, the portable monitoring method, and the recording medium with high reliability can be realized.

In the portable monitoring device according to claims 2, 3 and 4, the portable monitoring method according to claims 22, 23 and 24, and the recording medium according to claim 38, the shock detection means (shock detection Step) detects an impact,
The rate conversion means (rate conversion step) converts the coded data or the stored data between the predetermined time zone closer to the time and the predetermined time zone far from the time by setting different rates. For example, the rate of encoded data or stored data in a predetermined time zone closer to the time is set high, and the rate of encoded data or stored data in a predetermined time zone far from the time is set low for conversion. And
The transmission means (transmission step) transmits the data converted by the rate conversion means (rate conversion step).

As described above, a rate conversion means (rate conversion step) for converting video data to be transmitted at a rate suitable for transmission is provided, and when a destructive impact is applied to the portable monitoring device, it becomes important as a record. The video data immediately before and after the impact, which is considered to be, is converted at a high rate and transmitted preferentially so that more detailed video data can be obtained. During the limited time from receipt to destruction, it is possible to select records that are considered to have high evidential value and are important and obtain detailed images.

In the portable monitoring device according to the fifth aspect, the portable monitoring method according to the twenty-fifth aspect, and the recording medium according to the thirty-eighth aspect, the transmitting means (transmitting step) uses the shock detecting means (impact detecting step). The transmission is performed when the detection result is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern.

As described above, in the impact detection means (impact detection step), a predetermined level for judging the magnitude of the impact, or a destructive impact and a different impact such as a minute impact are selected. A predetermined change pattern is defined in advance, and whether or not the impact applied to the portable monitoring device is destructive is accurately determined by comparing with a predetermined level or a predetermined change pattern. It is possible to accurately detect that a destructive impact has been applied, and automatically transmit the recorded data to the observer.

In the portable monitoring device according to the sixth aspect, the portable monitoring method according to the twenty-sixth aspect, and the recording medium according to the thirty-eighth aspect, the encoding means (encoding step) uses the imaging means (imaging step). Encoded data is obtained by encoding the captured image and audio input by the audio input means (audio input step), and the encoded data is held as stored data by the data storage means (data storage step) having a recording medium. And operation means (operation steps)
, The user specifies desired data to be transmitted among the encoded data or the stored data, and preferentially transmits the data specified by the transmission means (transmission step) by radio.

As described above, the user is provided with the operation means (operation step) for designating desired data to be transmitted, and when the user designates desired data considered to be important, the designated portion is designated. Since the video data is transmitted with priority, not only the video data is transmitted only at a predetermined time or at a predetermined cycle as in the past, but also an important video that is a proof of crime or accident for the user. By judging and specifying it, the video data of the specified part can be transmitted to the observer with priority, so that the user possessing the portable monitoring device can suddenly encounter a crime or accident. Evidence can be reliably left, and a highly reliable portable monitoring device, portable monitoring method, and recording medium can be realized.

In the portable monitoring device according to claims 7 and 8, the portable monitoring method according to claims 27 and 28, and the recording medium according to claim 38, the rate conversion means (rate conversion step) A rate which is a temporal ratio of the amount of data to be transmitted is set and the data is converted at the rate. However, the data designated by the operation means (operation step) differs from the other encoded data or accumulated data. Set the rate and convert. For example, the conversion is performed by setting the rate of the designated data to be high and setting the rate of other coded data or stored data to be low. Further, the data converted in the rate conversion means (rate conversion step) is transmitted by the transmission means (transmission step).

As described above, the apparatus is provided with the rate conversion means (rate conversion step) for converting the video data to be transmitted at a rate suitable for transmission, and when the user specifies desired data considered important, the specified Because the video data of the part that was converted is converted and transmitted at a high rate so that more detailed video data can be obtained, it is preferentially transmitted. It is possible to send.

In the portable monitoring device according to claim 9, the portable monitoring method according to claim 29, and the recording medium according to claim 38, the portable monitoring device is added to the portable monitoring device by an impact detection unit (impact detection step). The transmission means (transmission step) transmits the detected impact when the detection result by the impact detection means (impact detection step) is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern. is there.

As described above, in the impact detecting means (impact detecting step), a predetermined level for judging the magnitude of the impact, or a destructive impact and a different impact, such as a minute impact, are selected. A predetermined change pattern is defined in advance, and when the situation where the portable monitoring device is destroyed is automatically detected, the data of the part that the user judges as having high evidential value and important is given priority to the supervisor. , It is possible to leave important data reliably.

In the portable monitoring device according to claims 10, 11 and 12, the portable monitoring method according to claims 30, 31 and 32, and the recording medium according to claim 38, the encoding means (encoding means) Step) encodes the image captured by the imaging means (imaging step) and the audio input by the audio input means (audio input step) to obtain encoded data, and encodes the encoded data by the data storage means (data storage step). Although it is held as stored data, the transmitting means (transmitting step) transmits coded data or stored data to another communicable portable monitoring device when communication with a predetermined receiving device is impossible, further,
A request is made to transmit data transmitted to another portable monitoring device from the other portable monitoring device to a predetermined receiving device.

As described above, when data cannot be transmitted to the receiver at the originator of the monitor due to factors such as line congestion or deterioration of the radio wave condition, another portable monitor capable of receiving data at a short distance. Since the device is searched and the data is transmitted to the other portable monitoring device, even in a situation where a line connection cannot be established between the portable monitoring device and the receiving device at the time of urgent data transmission,
The possibility that data can be transmitted to the observer using another communication path is increased, and the area where the portable monitoring device can be used with confidence can be expanded. A monitoring method and a recording medium can be realized.

Further, claims 13, 14, 15, and 16
In the portable monitoring device according to the third aspect, the portable monitoring method according to any one of claims 33, 34, 35, and 36, and the recording medium according to the thirty-eighth aspect, in another portable monitoring device, the data storage means (data storage step) The received data is stored as temporary storage data in a recording medium, and transmitted / received encoded data or stored data or provisional storage data is transmitted / received by a transmission / reception unit (transmission / reception step). Further, in the transmitting / receiving means (transmitting / receiving step), the provisional storage data is transmitted to the receiving device when communication with the predetermined receiving device is possible, and another communicable communication is possible when communication with the receiving device is impossible. The provisional storage data is transmitted to the portable monitoring device, and in that case, the other portable monitoring device is requested to transmit the transmitted data to a predetermined receiving device.

As described above, a line connection cannot be established between the portable monitoring device and the receiving device located under the monitoring person at the time of urgent data transmission due to factors such as line congestion and deterioration of the radio wave condition. Also, the data is transmitted to another receivable portable monitoring device at a short distance, temporarily stored as provisional storage data, and then transferred to the receiving device that is the original transmission partner. The area where the type monitoring device can be used can be expanded, and high reliability can be realized.

A portable monitoring device according to claim 17,
In the portable monitoring method according to claim 37 and the recording medium according to claim 38, when the encoded data is stored in the recording medium, or when the encoded data, the stored data, or the provisional stored data is transmitted, the encryption unit is used. (Encryption step)
Thus, encoded data, accumulated data, or provisional accumulated data is encrypted.

As described above, the encryption means (encryption step) for encrypting data is provided, and when recording the encoded data on the storage medium or transmitting the data, the data is encrypted. Any other person other than the user of the portable monitoring device and the observer, such as the criminal or the other party of the accident encountered by the user possessing the portable monitoring device, or the user of another portable monitoring device that transferred the data. The data can be prevented (suppressed) from being viewed or falsified by three parties, so that the privacy of the user is protected and the reliability of the recorded data as evidence is improved. Can be.

In the portable monitoring device according to the eighteenth aspect, it is preferable that the recording medium is a recording medium that can be randomly accessed. In the portable monitoring device according to the nineteenth aspect, the recording medium is detachable. It is desirable to use a portable recording medium. This allows the observer to monitor the user of the portable monitoring device from a distance,
It is also easy to leave the data accumulated by the user of the portable monitoring device as history or evidence information for later use.

Further, in the portable monitoring device according to the twentieth aspect, it is desirable that the encoded data is temporarily stored in the recording medium and transmitted as needed. This makes it possible to transmit the video data at a predetermined time or at a predetermined cycle, as in the related art.

[0065]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A portable monitoring device according to the present invention will be described below.
Embodiments of a portable monitoring method and a recording medium,
[First Embodiment], [Second Embodiment], and [Third Embodiment] will be described in detail in this order with reference to the drawings. In addition,
In the description of each embodiment, the portable monitoring device and the portable monitoring method according to the present invention will be described in detail. However, the recording medium according to the present invention has a recording medium storing a program for executing the portable monitoring method. Because it is a medium, its description is included in the following description of the portable monitoring method.

The portable monitoring device according to the first, second and third embodiments of the present invention uses wireless communication, so there is no restriction on the installation conditions. It is possible to wear it, for example, when a user encounters a crime, etc., it is possible to capture the image by a portable monitoring device and hold it on a recording medium of a mobile terminal and leave it as evidence. Yes, it is used for evidence collection and self-defense.

[First Embodiment] First, a portable monitoring apparatus and a portable monitoring method according to a first embodiment of the present invention will be described below. FIG. 1 is a configuration diagram of a portable monitoring device 1 according to the first embodiment. In FIG. 1, a portable monitoring device 1 of the present embodiment includes a control unit 101, an operation unit 10
2, encryption section 103, rate conversion section 104, transmission / reception section 1
05, an encoding unit 106, a shock detection unit 107, a data storage unit 108, an antenna 109, a microphone 110, a camera 111, and a DVD-RAM 112.

Here, the microphone 110 corresponds to voice input means, and the camera 111 corresponds to image pickup means. For example, when a user (user) of the portable monitoring apparatus 1 encounters a crime, the microphone 110 and the camera 111 can capture a state (voice and image) of the crime.

The encoding unit 106 corresponds to an encoding unit that encodes an image captured by the camera 111 and audio input by the microphone 110 to obtain encoded data. That is, the encoding unit 106 includes the microphone 110
In addition, the image and audio analog data input from the camera 111 are compression-encoded using, for example, a hierarchical encoding method for each spatial frequency to generate digitized (encoded) image data and audio data. The encoding method is MPEG1 (Moving Picture Experts Group phas
e1), MPEG2, MPEG4 or MotionJPEG (
Motion Joint Photographic Experts Group). Hereinafter, the encoded image data and audio data will be described as video data.

The data storage unit 108 stores the encoded data as stored data in a DVD-RA as a recording medium.
It corresponds to the data storage means held in M112. That is, the data storage unit 108 records and accumulates the untransmitted video data encoded by the encoding unit 106 in the removable DVD-RAM 112 that is randomly accessible.

Further, the impact detecting unit 107 is a portable device 1
This corresponds to an impact detecting means for detecting an impact applied to the vehicle. In other words, the impact applied to the device is detected, it is determined whether the impact is destructive, and the result is transmitted to the control unit 1.
Notify 01. As the impact determination, for example, when the detected impact is equal to or higher than a predetermined level, it is determined that a destructive impact has been applied to the apparatus. Alternatively, predetermined change patterns of frequency characteristics with respect to minute impacts such as destructive (or sudden) impacts and vibrations are stored in advance, respectively.
By determining which change pattern the detected impact matches, it is determined whether or not the impact applied to the device is destructive.

The encryption section 103 corresponds to an encryption means for encrypting the encoded data or the stored data. That is, the video data encoded by the encoding unit 106 is encrypted when the video data is recorded on the DVD-RAM 112 of the data storage unit 108 or when the video data stored on the DVD-RAM 112 is transmitted. The block-type common key encryption algorithm includes 3-way, AE
S, Blowfish, CAST128, CRABDE
S, Triple, DES, FEAL-N, FEAL-
NX, GOST, IDEA, RC2, RC5, MULT
I2, MYTY, SAFER, SKIP, JACK and the like. A5, CRYPT, GCC, LFSR,
RC4, SEAL, etc. Further, as public key encryption algorithms, El, Gamal, ECC, Dif
Fie-Hellman, Merkle-Hellma
n, napsack, Rabin, RSA and the like.

The rate converter 104 sets a rate which is a temporal ratio of the amount of data to be transmitted, and corresponds to a rate converter for converting encoded data or stored data at the rate. For example, when a destructive shock is applied to the device, video data recorded at a time close to the time when the shock was applied is output as a component containing a high spatial frequency component because it is relatively important as a recording. However, since the video data recorded at a distant time is relatively insignificant, only the low spatial frequency components are output except for the high spatial frequency components. As described above, by setting the video data immediately before and after the impact to a higher rate, an important record having a high evidential value is held as a detailed video.

The transmission / reception unit 105 is connected to the shock detection unit 10
7 corresponds to a transmission unit that wirelessly transmits encoded data or stored data when an impact is detected. That is, when a destructive shock is applied to the device, the microphone 11
0 and the video data input and encoded from the camera 111 or the video data recorded in the data storage unit 108 are transmitted. Further, the transmission / reception unit 105 also has a function as a reception unit that receives video data transmitted from another device. Note that the transmitting / receiving section 105 may be configured such that the transmitting section and the receiving section are separate bodies.

The control section 101 controls the entire operation. That is, when the impact detection unit 107 notifies that a destructive impact has been applied to the apparatus, the data storage unit 10
8. Controlling the rate conversion 104 and the transmission / reception unit 105, rate-converts the video data stored in the data storage unit 108, and transmits the video data. Further, the operation unit 102 is for inputting desired data by operating a button or the like by a user.

Before describing the operation of the portable monitoring device 1 of the present embodiment having the above-described configuration, a monitoring system having the portable monitoring device 1 of the present embodiment will be described with reference to FIG. I do.

FIG. 2 is a configuration diagram of the entire monitoring system in which a monitor observes an image captured by the portable monitoring device 1 of FIG. In the figure, a monitoring system according to the present embodiment includes a portable monitoring device 1 according to the first embodiment, a base station 5 of a wireless public line for receiving video data transmitted by the portable monitoring device 1, It has a wireless transmission path 4 opened between the monitoring apparatus 1 and the base station 5, a public telephone network 6, a hard disk 7 for temporarily storing video data, and a CRT display 8 for displaying reconstructed video data. The receiving device 9 is provided.

In the conventional monitoring system, an image captured by the portable monitoring device 1 is transmitted to the base station 5 via the radio transmission line 4 at predetermined time intervals, and the base station 5 transmits the image via the public network 6. Then, the video data received from the portable monitoring device 1 is transmitted and delivered to the observer, that is, the receiving device 9. Under the observer, the video data is temporarily stored on the hard disk 7, reconstructed, and displayed on the CRT display 8.
As a result, the observer could view the video captured by the portable monitoring device 1 from a long distance.

On the other hand, the portable monitoring device 1 according to the present embodiment not only transmits video data at predetermined time intervals as in the related art, but also transmits the video data when a destructive impact is applied to the device. Is automatically detected, and high-value data as evidence is automatically transmitted to the observer within a limited time until the device is destroyed. Thus, even if the user of the device unexpectedly encounters a crime or accident, even if the device is destroyed, data recording the crime or accident can be reliably left as evidence.

Hereinafter, the operation of the portable monitoring apparatus 1 in the monitoring system of the present embodiment, that is, the portable monitoring method will be described in detail with reference to the flowchart of FIG. Here, FIG. 3 is a flowchart showing the operation of the portable monitoring device 1 according to the first embodiment.

1, 2 and 3, the portable monitoring device 1 of the present embodiment first includes the audio and camera 111 captured by the microphone 110 in the encoding unit 106.
Compresses and encodes the captured image to generate video data. The data storage unit 108 sequentially stores the video data in the DV format.
The data is recorded in the D-RAM 112. The transmission / reception unit 105 sends the video data recorded on the DVD-RAM 112 to the receiving device 9 located at the observer at predetermined time intervals.

While the above operation is repeated, the portable monitoring device 1 detects an impact applied to itself in step S301 by the impact detection unit 107. Then, in step S302, the impact detection unit 107 determines whether the detected impact is a destructive impact or a minute impact.

Here, as the determination of the destructive impact, for example, the detected impact is compared with a predetermined level, and when the detected impact is equal to or higher than the predetermined level, it is determined that a destructive impact has been applied to the apparatus. Alternatively, a predetermined change pattern of the frequency characteristic with respect to a destructive impact and a minute impact is stored in advance, and the impact applied to the apparatus is determined by determining which change pattern corresponds to the detected impact. It is determined whether or not it is.

If it is determined that the detected impact is a minute impact, the portable monitoring device 1 stores video data again in step S306. On the other hand, when it is determined that the impact is a destructive impact, the fact is notified to the control unit 101 and the video data stored in the DVD-RAM 112 is transmitted.

When the control unit 101 knows from the shock detection unit 107 that a destructive shock has been applied to the apparatus, it issues commands to the rate conversion unit 104, the transmission / reception unit 105, and the data storage unit 108 to control these operations. I do. First, the data storage unit 108 reads out the video data already recorded on the DVD-RAM 112 and sends it to the rate conversion unit 104.
Next, the rate conversion unit 104 converts the video data into video data having a rate suitable for transmission. And the transmitting / receiving unit 1
In step S303, connection with the base station 5 is established in step S303, and in step S304, untransmitted stored data whose rate has been converted, that is, D which has not been transmitted to the base station 5 yet.
The video data recorded in the VD-RAM 112 is transmitted to the base station 5.

Here, the connection with the base station 5 is established, for example, when a sufficient electric field strength level of the received signal is received.
Alternatively, when a response to the call is received, the base station 5
Is performed by requesting a data transfer request.

The data transmission is automatically terminated after the data has been transmitted for a certain period of time. In step S305, if the transmission has not been completed due to, for example, a disconnection during transmission, the process returns to step S303 to establish a connection to the base station 5 again. When the data transmission is completed, step S3
Proceeding to 06, the portable monitoring device 1 stores video data again.

In the rate conversion performed by the rate conversion unit 104, for example, for video data recorded at a time that is temporally close to the time when an impact is applied, a component containing a high spatial frequency component is output, and The recorded video data is output by omitting high spatial frequency components and outputting only low spatial frequency components. Specifically, the relationship between the recorded time and the transmitted time in the video data can be represented as shown in FIG. Here, FIG.
FIG. 3 is an explanatory diagram of a data transmission method of video data in an emergency. In this embodiment, the emergency is a time when a destructive impact is applied to the device, and at this time, the transmitting / receiving unit 105
The video data recorded in the VD-RAM 112 is transmitted.

In FIG. 4, the horizontal axis represents the time at which the video data is recorded, and the vertical axis represents the time at which the video data is transmitted. The solid line on the plane indicates at which time t the video data recorded at which time t is transmitted, for example, at time ta
Is transmitted at time τa.

In the figure, it is assumed that a strong (destructive) impact is applied to the portable monitoring device 1 at time t0 while recording video data. The shock detection unit 107 detects the destructive shock and notifies the control unit 101 of the detection. The control unit 101 receives the request and the rate conversion unit 10
4. The video data is transmitted by controlling the transmission / reception unit 105 and the data storage unit 108.

The transmission / reception unit 105 first transmits video data recorded from time t1 immediately before time t0 to time t2 immediately after time t0 from time τ0 to time τ1. Next, the video data recorded between time t3 and time t1 before time t1 is copied from time τ1 to time τ2.
Send between. Further, the video data recorded after the time t2 is transmitted. Similarly, the portable monitoring apparatus 1 transmits video data recorded near the time t0 when the impact is applied to video data recorded gradually at a time farther from the time t0 when the impact is applied, in the order indicated by the arrow in FIG. Is transmitted until time tz when is completely destroyed.

Here, the slope ga of the solid line represents the degree of the rate, which is the temporal ratio of the amount of video data to be transmitted. That is, in the figure, the slope of the solid line becomes gradually gentler as the transmission progresses. For example, when a slope g0 representing data transmitted in a period from time τ0 to time τ1 is compared with a slope g1 representing data transmitted in a period from time τ1 to time τ2, the slope g
1 is slower. This indicates that the transmission time is shorter than the recording time, and the rate conversion unit 104 performs data conversion at a lower rate for video data that is farther from time t0, that is, video data that is considered to be less important. Means that. Conversely, the video data recorded at a time closer to the time t0 has a higher importance, so the data is converted at a higher rate.

By transmitting the video data from the portable monitoring device 1 in this manner, for example, the user of the portable monitoring device 1 encounters a crime and captures the state of the crime with the camera 111 and the microphone 110. After
Even if the portable surveillance device 1 is destroyed by a criminal, a record that is considered to be highly valuable and important for a limited time from when the device is first impacted to when it is destroyed , Can be obtained as detailed video, and the user of the portable monitoring device 1 can monitor the user of the portable monitoring device 1 from a distance, and at the same time, the user of the portable monitoring device 1 has accumulated. It is also easy to keep the data as history and evidence information for later use.

As described above, in the portable monitoring device and the portable monitoring method according to the first embodiment, the impact applied to the device is detected, and the impact applied to the device is determined to be a destructive impact. The portable monitoring device 1 including the detection unit 107
When a destructive shock is applied to the image data, video data obtained by encoding images and sounds obtained from the camera 111 and the microphone 110 or video data recorded on the DVD-RAM 112 after encoding is transmitted. As described above, not only the video data is transmitted only at a predetermined time or at a predetermined cycle, but also when the portable monitoring device 1 is destroyed, it is automatically detected and the encoded or stored video data is transmitted. A highly reliable portable monitoring device that can automatically transmit to the observer and can reliably leave evidence of a crime or accident that the user carrying the portable monitoring device 1 encounters unexpectedly. A type monitoring method and a recording medium can be realized.

Further, the impact detecting unit 108 previously sets a predetermined level for judging the magnitude of the impact, or a predetermined change pattern for selecting a destructive impact and other small impacts, for example. Regulated, portable monitoring device 1
Whether the impact applied to the portable monitoring device 1 is destructive is accurately determined by comparing it with a predetermined level or a predetermined change pattern, so that it is accurately detected that a destructive impact has been applied to the portable monitoring device 1. Then, the recorded data can be automatically transmitted to the observer.

Further, the portable monitoring device 1 is provided with a rate conversion unit 104 for converting video data to be transmitted at a rate suitable for transmission, and is considered important as a record when a destructive shock is applied to the portable monitoring device 1. The video data immediately before and immediately after the impact is converted at a high rate and transmitted preferentially so that more detailed video data can be obtained. During the limited time before it is destroyed, records that are considered to be highly valuable and important can be selected and obtained as detailed images.

Further, a DVD-R that can be randomly accessed
By making the AM 112 detachable and portable, the user of the portable monitoring device 1 can monitor the user from a distance, and at the same time, the data stored by the user of the portable monitoring device 1 can be stored in the history. It is also easy to keep it for later as evidence information.

In the first embodiment, the encoded data is encoded by the encryption unit 103 for encrypting the data into a DV format.
When recording the data in the D-RAM 112 or transmitting the data, the data can be encrypted. Thereby, the user of the portable monitoring device, such as a criminal or the other party of the accident encountered by the user possessing the portable monitoring device 1 or the user of another portable monitoring device to which the data is transferred, is monitored. It is possible to prevent (suppress) the data from being viewed or tampered with by a third party other than the user, and as a result, the privacy of the user is protected and the reliability as evidence of the recorded data is improved. Can be improved.

[Second Embodiment] Next, a portable monitoring device and a portable monitoring method according to a second embodiment of the present invention will be described. FIG. 5 is a flowchart showing the operation of the portable monitoring device according to the second embodiment.

The portable monitoring device according to the present embodiment is the same as the operation unit 102 of the portable monitoring device (first embodiment) shown in FIG.
And a function for explicitly marking the video data at a location determined to be important by the user. As a result, even when the apparatus is not subjected to a shock, it is possible to reliably leave, as evidence, a video that the user has determined to be important for evidence of a crime or accident. The functions and operations of the components other than the operation unit 102 in the present embodiment are the same as those in the first embodiment, and thus detailed description will be omitted.

Referring to FIGS. 1, 2 and 5, the portable monitoring device 1 of the present embodiment is similar to the first embodiment,
Images and sounds input from the camera 111 and the microphone 110 are compression-encoded by the encoding unit 106 and recorded on the DVD-RAM 112 of the data storage unit 108. The video data recorded from the DVD-RAM 112 is read out at the time of data transmission, and is read out by the rate conversion unit 10.
4 converts the video data into video data having a rate suitable for transmission.

Portable monitoring device 1 that repeats the above operation
On the other hand, in step S501 of FIG.
Mark desired video data to be transmitted. For example, when the user encounters a sudden crime or accident, the user marks, via the operation unit 102, the data of a portion that is determined to be highly important and important. In response to this, in step S502, the transmission / reception unit 105 establishes a connection with the base station 5 immediately after being marked, and then in step S503.
In the DVD-RAM 1
12 and transmits it to the base station 5. Note that the transmission is automatically terminated after the data for a certain period of time has been transmitted.

In step S504, if the transmission has not been completed due to, for example, a line disconnection during transmission, the process returns to step S502 to establish a connection to the base station 5 again. When the transmission of the data is completed, the portable monitoring device 1 proceeds to step S505 and continues to accumulate the data again.

Here, as the compression encoding of the encoding unit 106, for example, a hierarchical encoding method for each spatial frequency is used as in the first embodiment. Also, the rate converter 104
Then, for example, the video data of the part marked by the user as important is converted at a high rate so that more detailed video data can be obtained, and the data is converted so that it is transmitted preferentially. Then, a record that is considered to be important with high evidential value is transmitted as a more detailed video. Note that the compression encoding method, the rate conversion, and the data transmission method are not limited to the above methods.

The transmission of the video data in step S503 can be performed when a destructive impact is applied by the impact detection unit. In this case, a predetermined level for judging the magnitude of the impact, or a predetermined change pattern for selecting a destructive impact and other small impacts, for example, is defined in advance, and the portable monitoring is performed. The system automatically detects that the device has been destroyed, and automatically transmits the data of the portion that the user has determined to be important and important to the observer with priority. This makes it possible to reliably retain important data marked by the user even when the apparatus is impacted.

As described above, the portable monitoring device and the portable monitoring method according to the second embodiment include the operation unit 102 for designating desired data that the user wants to transmit.
When the user specifies desired data which is considered important, the video data of the specified portion is transmitted with priority, so that the video data is transmitted only at a predetermined time or at a predetermined cycle as in the related art. Rather, if the user determines that the video is important as evidence of a crime or accident and specifies it, the video data of the specified portion can be transmitted to the observer with priority. Therefore, it is possible to reliably leave evidence of a crime or accident that a user carrying the portable monitoring device 1 unexpectedly encounters, and to realize a highly reliable portable monitoring device, a portable monitoring method, and a recording medium. Can be.

In the second embodiment, the transmission of data explicitly marked as important by the user is started immediately after the data is marked.

[Third Embodiment] Next, a portable monitoring device and a portable monitoring method according to a third embodiment of the present invention will be described. FIG. 6 is a configuration diagram of a monitoring system including the portable monitoring device according to the third embodiment.

The monitoring system to which the portable monitoring device of the present embodiment is applied is the same as the monitoring system shown in FIG. 2 (first embodiment) except that the line between the portable monitoring device 1 and the base station 5 This is to transmit data to another portable monitoring device located in a short distance when it is crowded or when the radio wave condition is poor.
This increases the possibility that the data can be transmitted to the monitoring person, and thus the place where the portable monitoring device can be used with confidence is expanded. In the monitoring system according to the present embodiment, the functions and operations of the same components as those in the first embodiment are described below.
The same reference numerals are given and the detailed description is omitted.

The monitoring system of this embodiment shown in FIG.
A portable monitoring device 1 of the embodiment, another portable monitoring device 2, a wireless transmission path 3, a wireless transmission path 4, a base station 5, and a receiving device 9 having a hard disk 7 and a CRT display 8, When the line between the portable monitoring device 1 and the base station 5 is congested or the radio wave condition is poor, the video data stored in the portable monitoring device 1 is transferred to the portable monitoring device 2.
And transmits the video data to the base station 5 by opening the wireless transmission path 4 between the portable monitoring device 2 and the base station 5.

Here, when the portable monitoring device 2 cannot secure a transmission path between the portable monitoring device 1 and the base station 5, the other portable monitoring device 2 and the other portable monitoring device 2 communicate with each other. The video data transmitted by the portable monitoring device 1 is received via the wireless transmission path 3 different from the public line opened during the communication. Since the structure of the other portable monitoring device 2 is the same as that of the portable monitoring device 1 shown in FIG. 1, detailed description of its components and operation is omitted, but it will be understood from FIG. 6 and the following description. “′” Is added as a reference symbol for easy understanding.

Next, the operation of the monitoring system will be described in detail with reference to the flowchart of FIG. Here, FIG. 7 is a flowchart showing the operation of the portable monitoring device 1 according to the third embodiment. FIG. 8 is a flowchart showing the operation of another portable monitoring device 2 according to the third embodiment.

In FIGS. 1, 6 and 7, first, the encoding unit 106 compresses and encodes the audio captured by the microphone 110 and the image captured by the camera 111 and converts them into video data. The video data is recorded on the DVD-RAM 112. And step S
In step S701, when the impact detection unit 107 detects that an impact has been applied to the portable monitoring device 1, the process proceeds to step S7.
In 02, it is determined whether the impact is a destructive impact.

When the impact applied to the apparatus is destructive, the control unit 101 issues commands to the rate conversion unit 104, the transmission / reception unit 105, and the data storage unit 108 to control their operations. First, the data storage unit 108 stores the DVD-RAM1
The video data already recorded in the memory 12 is read and sent to the rate converter 104. Next, the rate converter 104 converts the video data into video data having a rate suitable for transmission. Then, the transmitting / receiving unit 105 calls the base station 5 and attempts to transmit the converted video data to the base station 5 via the line.

In step S 703, the transmitting / receiving section 105 first establishes a connection to the base station 5.
The base station 5 checks whether the electric field strength level of the received signal from the base station 5 is sufficient or whether there is a call response from the base station 5.
It is determined whether or not a connection can be established. If the connection with the base station 5 can be established, the process proceeds to step S704, and the transmission / reception unit 105 issues a connection establishment request to the base station 5.

Next, the transmitting / receiving section 105 determines in step S70
When the response from the base station 5 is received in step 5, the process proceeds to step S706, and the untransmitted stored data is transmitted to the base station 5. That is, the video data recorded on the DVD-RAM 112 is read, converted to a rate suitable for transmission, and transmitted. Next, in step S707, if the transmission is not completed, the process returns to step S703 again to connect to the base station 5. On the other hand, when the transmission is performed in step S707, the portable monitoring device 1
Proceeding to 13, the data is stored again.

The above step S703 or step S7
In the determination of step 05, a transmission path to the base station 5 cannot be secured, that is, if a sufficient electric field strength level of the received signal from the base station 5 cannot be obtained or there is no response to the call, or a connection establishment request If there is no response to, the transmission / reception unit 105 notifies the control unit 101 that communication with the base station 5 is not possible, and proceeds to step S708.

That is, in step S708, the control unit 101 instructs the transmission / reception unit 105 to search for another nearby portable monitoring device 2. Transceiver 10
5 finds the portable monitoring device 2 and requests the portable monitoring device 2 to transfer video data. Then, step S7
If the data transfer request is received by the portable monitoring device 2 in step 09, the process proceeds to step S710, where the encryption unit 10
Then, the transmission / reception unit 105 transmits the encrypted video data to another portable monitoring device 2. Next, in step S711, the transmission / reception unit 10
5 requests another portable monitoring device 2 to transfer the data to the base station 5 so that the data once stored in the portable monitoring device 2 is transmitted to the receiving device 9 to which the data should be transmitted. Become.

Next, when the data transmission is completed in step S712, the process proceeds to step S713, where the data is stored again. If the data transmission has not been completed in step S712, the process returns to step S703 again to establish a connection with the base station 5. Note that if it is not a destructive impact in step S702, that is, if it does not exceed a predetermined threshold,
When the pattern matches the pattern representing the minute impact, the process proceeds to step S714, and the data is stored again.

Next, the operation of the portable monitoring device 2 receiving a data transfer request from the portable monitoring device 1 will be described in detail with reference to the flowchart of FIG.

First, in step S801, when the portable monitoring device 2 receives a data transfer request from the transmission / reception unit 105 of the portable monitoring device 1, the transmission / reception unit 105 ′ notifies the control unit 101 that the data transfer request has been received. Tell '. Then, in step S802, the control unit 101 'determines whether the free space of the recording medium, that is, the DVD-RAM 112' is sufficient for temporary data storage. If the data can be stored, the process proceeds to step S803. And accepts a data transfer request. If there is not enough free space in the DVD-RAM 112 ', the process proceeds to step S815, and the data transfer request is rejected.

Next, in step S804, the control unit 10
1 ′ is a transmission / reception unit 105 ′ and a data storage unit 108 ′
To control the operation. First, the transmitting / receiving unit 1
05 ′ receives the video data transmitted from the portable monitoring device 1 and passes it to the data storage unit 108 ′. Next, the data storage unit 108 'records the video data on the DVD-RAM 112'.

If connection with the base station 5 can be established, in steps S805 to S809,
As in steps S703 to S707 in FIG.
The transmission / reception unit 105 ′ opens the transmission path 4 between itself and the base station 5,
The data storage unit 108 'reads out the video data recorded on the DVD-RAM 112', that is, the video data that the portable monitoring device 1 should originally send to the base station 5, and transmits it to the base station 5 by the transmission / reception unit 105 '. .

On the other hand, in the determination in step S805 or step S807, a transmission path to the base station 5 cannot be secured. If there is no response, or if there is no response to the connection establishment request, the transmitting / receiving unit 105 ′ notifies the control unit 101 ′ of that fact.
To step S810.

Next, in step S810, the portable monitoring device 2 searches for another nearby portable monitoring device, and the other portable monitoring device receives a video data transfer request. Then, in step S811, when a data transfer request is received by another portable monitoring device, in steps S812 to S814, a request is made to transmit the untransmitted provisional accumulated data and to transfer the data to the base station 5. I do.

As described above, according to the portable monitoring device and the portable monitoring method of the third embodiment, the data is transmitted to the receiving device 9 located at the monitoring person due to the congestion of the line and the deterioration of the radio wave condition. When the portable monitoring device 2 cannot be transmitted, the portable monitoring device 2 is searched for a receivable portable monitoring device 2 in a short distance and the data is transmitted to the other portable monitoring device 2. Even if the line connection with the receiving device 9 is not possible, the possibility that data can be transmitted to the monitoring person using another communication path increases, and the area where the portable monitoring device can be used with confidence is expanded. It is possible,
A highly reliable portable monitoring device and portable monitoring method can be realized. In this case, the data is transmitted to another receivable portable monitoring device 2 at a short distance, temporarily stored as provisional storage data, and then transferred to the receiving device 9 that is the original transmission partner. The area where the portable monitoring device can be used with confidence can be expanded, and high reliability can be realized.

Also, the encryption unit 103 for encrypting data
When the encoded data is recorded on the DVD-RAM 112 or when the data is transmitted, the data is encrypted, so that the user possessing the portable monitoring device 1 encounters a criminal or an accident partner. Or the portable monitoring device 1 such as a user of another portable monitoring device 2 to which the data has been transferred.
Data can be prevented (suppressed) from being viewed or tampered with by third parties other than the user and the monitor, and as a result, the privacy of the user can be protected and the recorded data can be protected. Reliability as evidence can be improved.

In the third embodiment, the portable monitoring device 1 transmits data when a destructive impact is applied to the device, but as shown in the second embodiment, The user may transmit the data of the marked portion determined to be important. In addition, the portable monitoring device 2 has the same structure as the portable monitoring device 1, but may have any configuration as long as it has at least a transmission / reception unit and a data storage unit.

In the data transfer, the data transfer is performed via only one other portable monitoring device. However, the data transfer may be performed via a plurality of devices sequentially or may be performed in parallel by a plurality of devices. May be received at the same time.

Further, in the first, second and third embodiments, the device configuration of the entire system is as shown in FIGS. 2 and 6, but any device conforming to this device configuration may be used. Other configurations may be used. Also,
Data transmission may be via a line other than a public telephone line as long as the line transmits wirelessly transmitted data.

The portable monitoring devices of the first, second and third embodiments handle only video data captured by images and sounds captured by a microphone and a camera. May be treated. For example, by transmitting GPS (self-location information) and a clock (time information) when transmitting video data, it is possible to obtain data at any time and anywhere, and to provide identification and arrangement of the obtained video. Can also. In addition, although a removable random-accessible DVD-RAM is used as a recording medium, a medium other than the DVD-RAM may be used as long as it is a removable random-accessible recording medium.

Further, as a method for reducing the data rate, a method for eliminating high spatial frequency components is used, but a method for reducing the number of frames per unit time or other methods may be used. Further, the data transmission method may be a method other than the method shown in FIG. Also, it is said that transmission will be automatically terminated after transmitting data for a certain period of time,
Not necessarily.

[0133]

As described above, according to the portable monitoring device, the portable monitoring method, and the recording medium of the present invention, when a destructive impact is applied to the portable monitoring device, an image pickup means such as a camera can be used. Since video data obtained by encoding images and voices obtained from audio input means such as a microphone and video data recorded on a recording medium after encoding are transmitted, the user who has a portable monitoring device encounters unexpectedly. Thus, it is possible to reliably leave evidence of a crime or an accident, and to provide a highly reliable portable monitoring device, portable monitoring method, and recording medium.

Further, according to the portable monitoring device, the portable monitoring method and the recording medium of the present invention, the operating means (operating step) for designating desired data which the user wants to transmit.
When the user specifies desired data considered to be important, the video data of the specified portion is transmitted with priority, so that a user who possesses the portable monitoring device unexpectedly encounters a crime. Thus, it is possible to reliably provide a portable monitoring device, a portable monitoring method, and a recording medium, which can leave evidence of accidents and accidents.

Further, according to the portable monitoring device, the portable monitoring method and the recording medium of the present invention, data is transmitted to the receiving device located at the observer due to the congestion of the line or the deterioration of the radio wave condition. If transmission is not possible, another portable monitoring device that is receivable at a short distance is searched for and data is transmitted to the other portable monitoring device. Even in situations where line connection is not possible, the possibility that data can be transmitted to the observer using another communication path increases, and the area where the portable monitoring device can be used with confidence can be increased. A reliable portable monitoring device, a portable monitoring method, and a recording medium can be provided.

Further, according to the portable monitoring device, the portable monitoring method, and the recording medium of the present invention, the portable monitoring device, the portable monitoring method, and the recording medium are provided with an encryption means (encryption step) for encrypting the data. Also, since the data is encrypted when the data is transmitted, the criminal or accident partner encountered by the user possessing the portable monitoring device, or the use of another portable monitoring device that has transferred the data. It is possible to prevent (suppress) the data from being viewed or tampered with by the user of the portable monitoring device or a third party other than the monitor, such as a user, and as a result, the privacy of the user is protected. At the same time, the reliability of the recorded data as evidence can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a portable monitoring device according to a first embodiment.

FIG. 2 is a configuration diagram of an entire monitoring system in which an observer views an image captured by the mobile monitoring device of FIG. 1;

FIG. 3 is a flowchart illustrating an operation of the portable monitoring device according to the first embodiment.

FIG. 4 is an explanatory diagram of a data transmission method of video data in an emergency.

FIG. 5 is a flowchart showing an operation of the portable monitoring device according to the second embodiment.

FIG. 6 is a configuration diagram of a monitoring system according to a third embodiment.

FIG. 7 is a flowchart showing an operation of the portable monitoring device according to the third embodiment.

FIG. 8 is a flowchart showing an operation of another portable monitoring device according to the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Portable monitoring device 2 Another portable monitoring device 3, 4 Wireless transmission line 5 Base station 6 Public line network 7 Hard disk 8 CRT display 9 Receiving device 101 Control unit 102 Operation unit 103 Encryption unit 104 Rate conversion unit 105 Transmission / reception unit 106 Encoding unit 107 Shock detection unit 108 Data storage unit 109 Antenna 110 Microphone 111 Camera 112 DVD-RAM

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) H04B 7/26 H04B 7/26 MF term (Reference) 5C054 CD00 DA00 DA01 DA07 EA03 EA07 EG00 EG06 GA01 GA02 GA04 GB01 GB06 GD01 HA18 5C087 AA02 AA03 AA08 AA24 AA37 AA44 BB12 BB18 BB58 BB65 BB74 DD05 DD49 EE05 EE06 EE18 GG01 GG12 GG18 GG32 GG70 5K067 AA35 BB21 DD52 EE02 EE10 H23H05H05

Claims (38)

[Claims] An encoding unit that encodes an image captured by the imaging unit and a voice input by the audio input unit to obtain encoded data; and stores the encoded data. A data storage unit having a recording medium for holding the data, a shock detection unit for detecting a shock applied to the portable monitoring device, and the encoded data or the stored data when the shock detection unit detects a shock. A portable monitoring device, comprising: a transmission unit for transmitting wirelessly. 2. The transmission means according to claim 1, wherein when the shock detecting means detects a shock, the transmitting means preferentially transmits the encoded data or the stored data in a predetermined time zone closer to the time. 2. The portable monitoring device according to claim 1. 3. A rate conversion means for setting a rate which is a temporal ratio of an amount of data to be transmitted, and converting the encoded data or the stored data at the rate, the rate conversion means comprising: When the means detects an impact, the encoded data or the stored data of a predetermined time zone closer to the time and a predetermined time zone far from the time are set and converted to different rates, and the transmitting means includes: 3. The portable monitoring device according to claim 1, wherein the data converted by the rate conversion means is transmitted. 4. The rate conversion means, when the shock detection means detects a shock, sets a high rate of the encoded data or the stored data in a predetermined time zone closer to the time, and sets a predetermined rate far from the time. The portable monitoring device according to claim 3, wherein a rate of the encoded data or the stored data in a time zone is set low. 5. The transmission device according to claim 1, wherein the transmission unit transmits when a detection result of the impact detection unit is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern. 5. The portable monitoring device according to 4. 6. An imaging unit, an audio input unit, an encoding unit that encodes an image captured by the imaging unit and an audio input by the audio input unit to obtain encoded data, and stores the encoded data. Data storage means having a recording medium for holding as data, operation means for a user to specify desired data to be transmitted among the coded data or the stored data, and data specified by the operation means A portable monitoring device, comprising: transmission means for transmitting by priority by wireless. 7. Rate setting means for setting a rate which is a temporal ratio of a data amount to be transmitted, and converting said encoded data or said stored data at said rate, said rate converting means comprising: said operating means The data specified by the above and the other coded data or the stored data are set at different rates and converted, and the transmitting means transmits the data converted by the rate converting means. The portable monitoring device according to claim 6. 8. The data processing apparatus according to claim 1, wherein said rate conversion means sets a high data rate specified by said operation means, and sets a low rate for the other encoded data or said stored data. A portable monitoring device according to claim 7. 9. An impact detecting means for detecting an impact applied to the portable monitoring device, wherein the transmitting means is adapted to detect when an impact detected by the impact detecting means is equal to or higher than a predetermined level or to match a predetermined change pattern. 9. The portable monitoring device according to claim 6, 7 or 8, wherein the portable monitoring device is transmitted when the communication is performed. 10. The transmitting means transmits the encoded data or the stored data to another portable monitoring device capable of communication when communication with a predetermined receiving device is not possible. Claims 1, 2, 3, 4, 5, 6,
10. The portable monitoring device according to 7, 8, or 9. 11. An image pickup means, an audio input means, an encoding means for encoding an image taken by the image pickup means and a sound inputted by the audio input means to obtain encoded data, and accumulating the encoded data. A data storage unit having a recording medium for holding the data as data; and a transmission unit for wirelessly transmitting the encoded data or the stored data to a predetermined reception device. A portable monitoring device that transmits the encoded data or the stored data to another portable monitoring device capable of communication when communication with the device is impossible. 12. The portable monitoring device according to claim 10, wherein the portable monitoring device requests the other portable monitoring device to transmit the transmitted data to a predetermined receiving device. 13. The other portable monitoring device, comprising: a data storage unit having a recording medium for holding received data as provisional storage data; and the encoded data or the stored data transmitted from the portable monitoring device. 13. The portable monitoring device according to claim 10, further comprising a transmission / reception unit configured to transmit / receive the provisional accumulated data. 14. The portable monitoring device according to claim 13, wherein said transmission / reception means transmits said provisionally stored data to said predetermined receiving device when said transmitting / receiving device can communicate with the predetermined receiving device. 15. The transmission / reception unit according to claim 13, wherein, when communication with a predetermined receiving device is not possible, the provisional storage data is transmitted to another portable monitoring device capable of communication. 15. The portable monitoring device according to 14. 16. The portable monitoring device according to claim 15, wherein the other portable monitoring device requests the another portable monitoring device to transmit the transmitted data to a predetermined receiving device. Portable monitoring device. 17. An apparatus according to claim 1, further comprising encryption means for encrypting said encoded data, said stored data, or said provisional stored data.
5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
17. The portable monitoring device according to 15 or 16. 18. The recording medium according to claim 1, wherein said recording medium is a randomly accessible recording medium.
3,4,5,6,7,8,9,10,11,12,1
The portable monitoring device according to 3, 14, 15, 16 or 17. 19. The recording medium according to claim 1, wherein said recording medium is a detachable and portable recording medium.
5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
19. The portable monitoring device according to 15, 16, 17 or 18. 20. The apparatus according to claim 1, wherein said encoded data is temporarily stored in said recording medium and transmitted as required. , 10,1
The portable monitoring device according to 1, 12, 13, 14, 15, 16, 17, 18 or 19. 21. An imaging step, an audio input step, an encoding step of encoding an image photographed in the imaging step and audio input in the audio input step to obtain encoded data, and accumulating the encoded data. A data storage step of retaining the data as data in a recording medium; an impact detection step of detecting an impact; and
Transmitting the coded data or the stored data wirelessly. 22. The transmission step, wherein, when an impact is detected in the impact detection step, the encoded data or the stored data in a predetermined time zone closer to the time is preferentially transmitted. 21. The portable monitoring method according to item 21. 23. A rate conversion step of setting a rate which is a temporal ratio of an amount of data to be transmitted, and converting the encoded data or the stored data at the rate. When an impact is detected in the step, the coded data or the stored data of the predetermined time zone closer to the time and the predetermined time zone far from the time are set at different rates and converted, and the transmitting step includes: 22. The data converted by the rate conversion step is transmitted.
Or the portable monitoring method according to 22. 24. The rate conversion step, when an impact is detected in the impact detection step, sets a higher rate of the encoded data or the stored data in a predetermined time zone closer to the time, and sets a predetermined rate far from the time. The portable monitoring method according to claim 23, wherein a rate of the encoded data or the stored data in a time zone is set low. 25. The transmission method according to claim 21, wherein the transmitting step is performed when a detection result obtained by the impact detecting step is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern. 25. The portable monitoring method according to 24. 26. An imaging step, an audio input step, an encoding step of encoding an image captured in the imaging step and audio input in the audio input step to obtain encoded data, and accumulating the encoded data. A data storage step of retaining the data as data in a recording medium; an operation step of allowing a user to specify desired data to be transmitted among the encoded data or the stored data; and giving priority to the data specified by the operation step A portable monitoring method comprising the steps of: 27. A rate conversion step of setting a rate, which is a temporal ratio of an amount of data to be transmitted, and converting the coded data or the stored data at the rate, the rate conversion step comprising: The data specified by the above, the other encoded data or the stored data is set to a different rate and converted, and the transmitting step transmits the data converted by the rate converting step. Claim 26
Portable monitoring method as described. 28. The rate conversion step, wherein the rate of the data specified by the operation step is set high, and the rate of the other encoded data or the stored data is set low. 28. The portable monitoring method according to 27. 29. An impact detecting step for detecting an impact, wherein the transmitting step transmits when a result of the detection by the impact detecting step is equal to or higher than a predetermined level or when the detection result matches a predetermined change pattern. The portable monitoring method according to claim 26, 27 or 28. 30. The transmitting step transmits the encoded data or the stored data to another portable monitoring device capable of communication when communication with a predetermined receiving device is impossible. Claims 21, 22, 23, 2
The portable monitoring method according to 4, 25, 26, 27, 28 or 29. 31. An imaging step, an audio input step, an encoding step of encoding an image captured in the imaging step and audio input in the audio input step to obtain encoded data, and accumulating the encoded data. A data storing step of storing the encoded data or the stored data as data in a recording medium, and a transmitting step of wirelessly transmitting the encoded data or the stored data to a predetermined receiving device. The transmitting step includes a predetermined receiving device. And transmitting the encoded data or the stored data to another portable monitoring device capable of communicating with the portable monitoring device when communication with the portable monitoring device is not possible. 32. The portable monitoring method according to claim 30, wherein the other portable monitoring device is requested to transmit the transmitted data to a predetermined receiving device. 33. A data provisional storage step of storing received data as provisional storage data in a recording medium of the another portable monitoring device; and the encoded data transmitted to the other portable monitoring device or the storage. 33. The portable monitoring method according to claim 30, further comprising a transmission / reception step of transmitting / receiving data or the provisionally stored data. 34. The portable monitoring method according to claim 33, wherein, in the transmitting / receiving step, when communication with a predetermined receiving device is possible, the temporary storage data is transmitted to the receiving device. 35. The transmission / reception step according to claim 33, wherein, when communication with a predetermined receiving device is impossible, the provisional accumulated data is transmitted to another portable monitoring device capable of communication. 35. The portable monitoring method according to claim 34. 36. The portable monitoring device according to claim 35, wherein the other portable monitoring device requests another portable monitoring device to transmit the transmitted data to the predetermined receiving device. Portable monitoring method. 37. An apparatus according to claim 21, further comprising an encryption step of encrypting said encoded data, said stored data, or said provisionally stored data.
3,24,25,26,27,28,29,30,3
39. The portable monitoring method according to 1, 32, 33, 34, 35 or 36. 38. The method of claim 21, 22, 23, 24, 2.
5,26,27,28,29,30,31,32,3
A computer-readable recording medium recorded as a program for causing a computer to execute the portable monitoring method according to 3, 34, 35, 36, or 37.