JPH11177968A - System for indicating monitoring point by portable monitoring camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable remote monitoring by generating an indication signal to indicate a monitoring point in response to an input signal from a direction indicating operation part and wirelessly transmitting the indication signal to a portable monitoring camera part. SOLUTION: An output signal from a portable monitoring camera 1 is sent to a radio means. A work instructor in a construction office operates a direction indicating operation part 71 while observing the screen of a monitor and inputs a position to be monitored. an indication signal generation part 72 generates an indication code signal corresponding to the inputted indication. An indication operation part 74 sends the indication code signal to a camera part 3 by a radio transmission means. An indication receiving part 31 attached to the camera 1 receives the radio's transmitted signal. An indication signal formation part 32 demodulates the received signal and generates a specified indication code signal. An indication or a symbol such as right/left, up/down, front/rear, enlargement/reduction, or the like is displayed on a monitoring point indication part 33 by the use of characters based on the indication code signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring point indicating system in which an operator of a portable monitoring camera is instructed to display a monitoring point of the camera by a wireless transmission means from an instructor in a monitoring monitor section.

[0002]

2. Description of the Related Art A battery-powered portable surveillance camera is used in work monitoring and site confirmation work at a high place work site, a radiation control area, a mountain work site, and the like. The work instructor gives professional advice and work instructions to the worker while watching the monitoring monitor installed in a remote place such as an office. A camera operator at a work site operates a portable surveillance camera to capture an image of an object to be monitored or an event, and wirelessly transmits the captured image to an office. FIG. 4 is a system diagram of a conventional surveillance camera system. The output of the portable surveillance camera 1 is converted into a spread spectrum modulated wave by the transmission unit 2 and transmitted wirelessly. The receiving unit 4 installed near the monitor 6 receives the signal, and the demodulation unit 5 demodulates the original image signal and inputs it to the monitor 6. The work instructor gives an instruction of a monitoring point to the operator of the camera at the work site using the mobile phone 9 or the like while watching the monitoring monitor 6. If the noise at the work site is severe or the weather is severe, problems such as the inability to hear the instruction content have occurred. In addition, operating both the camera and the mobile phone in dangerous work at high places, etc., hinders the safety of the operator.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention inputs a monitoring point of a portable monitoring camera from a direction indicating operation section, transmits the monitoring point by wireless means, and displays an instruction to the camera operator. The purpose is to provide the system.

[0004]

A portable surveillance camera, a demodulation unit for demodulating a wirelessly transmitted output signal from the portable surveillance camera and outputting a demodulated image signal, a left-right, up-down, front-back, etc. A direction instructing operation unit for instructing and inputting the direction of the monitoring point, an instruction signal generating unit for generating an instruction signal for the monitoring point in response to an input signal from the direction instructing operation unit, and carrying a modulated signal modulated by the instruction signal by wireless means An instruction transmitting unit for transmitting to the surveillance camera, an instruction receiving unit for receiving the modulated signal,
It comprises an instruction signal generator for demodulating a received modulation signal to generate an instruction signal, and a monitoring point instruction unit for displaying and outputting the instruction signal.

Further, the monitoring point indicating unit is an LED or a lamp, and an instruction signal generating unit is constituted by a code demodulating unit for demodulating an instruction code signal from the received modulation signal and a device driver for driving the LED or the lamp.

Further, the monitor point indicating unit is a dedicated display panel such as an LCD panel or a PDP, and an instruction signal generating unit demodulates an instruction code signal from the received modulation signal and a device for driving the LED or the lamp. Consists of a driver.

[0007] Further, the monitoring point instructing unit includes an image synthesizing unit for superimposing an instruction signal on a signal from the portable surveillance camera.
Also used as a viewfinder such as CD or CRT,
The instruction signal generator is a code demodulator that demodulates an instruction code signal from the received modulated signal. Alternatively, the instruction signal generation unit is instructed by the HV coordinate operation unit that calculates and outputs the H and V timings from the synchronization signal of the portable monitoring camera, and the display coordinate code and the H and V timings included in the instruction code signal. A display coordinate designating unit for designating the coordinates of an instruction symbol or a character is additionally provided at a position on the screen.

[0008] Further, the monitoring point instructing unit may be an audio output unit for issuing an instruction of a monitoring point by voice using external headphones or the like, and the instruction signal generating unit may be a code demodulating unit for demodulating an instruction code signal from a received modulated signal. And a voice data memory storing voice data, and a voice synthesizing unit for voice synthesizing a voice signal of a monitoring point instruction from the instruction code signal and the voice data. Alternatively, the monitoring point instruction unit may be an audio output unit that issues an instruction of a monitoring point by voice using external headphones or the like, the instruction signal generation unit may be an audio demodulator that demodulates the received modulated signal audio signal, and the audio output unit Thus, a voice instruction from the instructor is directly output.

[0009] Further, the direction instructing operation unit is provided for right and left, up and down,
A cursor switch in the form of a cursor such as a back and forth cursor, and an instruction signal generator is a control code generator that generates a control code for a predetermined instruction in response to a selection input by the cursor switch, and a modulation transmitted from the instruction transmitter by the control code. And a modulator for outputting a signal. Alternatively, a joystick operation unit having an operation lever that can be operated in any direction is used instead of the cursor switch of the direction instruction operation unit.

Further, the direction indicating operation section is a pen touch type digitizer board, and the indicating signal generating section is a digitizer input section for inputting a digitizer signal from the digitizer board, and converts and outputs an indicating code signal from the digitizer signal. It comprises a code conversion unit and a modulation unit that outputs a modulated signal transmitted from the instruction transmission unit based on the converted and output instruction code signal.

[0011] Further, the direction instructing operation section is a touch panel having a transparent touch electrode provided on the display screen of the monitor, and the instructing signal generating section generates address data from a synchronizing signal of an image displayed and output on the monitor. An address generation unit, a digitizer input unit that outputs a digitizer signal such as an instruction code and an address code by an output signal from the touch panel, a code conversion unit that converts and outputs the instruction code signal from the digitizer signal, And a modulator for outputting a modulation signal transmitted from the instruction transmitter in response to the instruction code signal.

Further, the direction instruction operation unit is a voice input unit such as a microphone, and the instruction signal generation unit is configured by a modulation unit that outputs a modulation signal transmitted from the instruction transmission unit by a voice signal from the voice input unit. I do. Alternatively, the direction instruction operation unit is a voice input unit such as a microphone, and the instruction signal generation unit is a voice recognition unit that recognizes and outputs predetermined voice input data from a voice signal from the voice input unit; It comprises a control code generator for generating a control code for instruction, and a modulator for modulating and outputting a modulation signal transmitted from the instruction transmitter by the control code.

[0013] Further, the wireless transmission means of the instruction transmitting unit and the instruction receiving unit may be wireless transmission means of the same spread spectrum system as image transmission, and wireless transmission means of a data transmission system using weak radio waves. P using the line
An HS wireless transmission telephone, a car telephone using a wireless public line, or an infrared wireless transmission means for modulating and demodulating infrared light with the instruction code signal and transmitting / receiving the same.

Further, a public line such as an ISDN, a communication control unit for controlling communication connection with the public line, and a signal received via the public line are transmitted between the instruction signal generating unit and the instruction transmitting unit. A converter that converts and outputs a code signal is additionally installed, and the instruction code signal from the instruction signal generator is transmitted to the vicinity of the use site of the portable monitoring camera via the public line, and transmitted and output from the transmitter. .

[0015]

FIG. 1 is a schematic system diagram showing an embodiment of a portable monitoring camera monitoring point indicating system according to the present invention, and FIG.
FIG. 3 is a block diagram of a main part of a plurality of embodiments of a portable monitoring camera unit according to the present invention, and FIG. 3 is a block diagram of a main part of a plurality of embodiments of a monitor unit mainly according to the present invention. The schematic operation of the system of the embodiment will be described with reference to FIG. An image of the portable monitoring camera 1 captured by a camera operator at a work site is displayed on a monitoring monitor 6 installed in a construction office or the like. The output signal from the portable surveillance camera 1 is
The signal is converted into a spread spectrum modulated wave by a transmission unit 2 for image transmission and transmitted by wireless means. The receiving unit 4 receives the modulated wave signal of the spread spectrum system, and the demodulating unit 5 demodulates the image signal from the modulated wave signal and inputs the demodulated image signal to one input terminal d of the monitor 6. The work instructor in the construction office operates the direction instruction operation unit 71 while watching the monitor image to input an instruction of a place to be monitored (hereinafter referred to as a monitoring point). This instruction input is based on the current monitoring point, left and right,
Instructions such as up and down, back and forth, enlargement and reduction are given. The instruction signal generator 72 generates an instruction code signal corresponding to these instruction inputs. The instruction code signal is transmitted from the instruction transmitting unit 74 to the camera unit 3 by wireless transmission means. Instruction receiving unit 31 attached to portable surveillance camera 1
Receives the wirelessly transmitted signal. The instruction signal generator 32 demodulates the received signal and generates a predetermined instruction code signal. By this instruction code signal, the monitoring point instruction unit 33
Instructions such as left and right, up and down, front and back, enlargement and reduction are displayed and output by symbols and characters. The camera operator can receive an instruction of a monitoring point from the display output.

Referring to FIG. 2, detailed operations of the monitoring point indicating unit 33 and the instruction signal generating unit 32 mounted on the portable monitoring camera 6 will be described in detail. (A) is the simplest configuration, and the monitoring point indicating unit 33 is a symbol LED1, LED2,... L of left and right, up and down, front and back, enlargement and reduction, etc.
An instruction display panel such as an LCD or a PDP is provided on the operation surface of the camera. The instruction signal generator 32 includes a code demodulator 32b that demodulates an instruction code signal from a received signal and a device driver 32a that drives the monitoring point instruction unit 33.

FIG. 2B shows an indication of a monitoring point using a viewfinder 33a such as an LCD or CRT mounted on the camera. Instruction symbol generator 32c
Generates display symbol data and character data to be displayed and output at a predetermined screen position from the instruction code signal demodulated by the code demodulation unit 32b. The image combining unit 33b includes:
The display symbol data and the character data are superimposed on the camera output signal input from one input terminal c and displayed on the viewfinder 33a. Voice synthesizer 34b
Reads the corresponding audio data from the audio data memory 34a based on the code signal output from the code demodulation unit 32b, and synthesizes and outputs the audio signal. Audio output unit 33c
Outputs the synthesized and output instruction of the monitoring point as an audio signal PH. The operator of the camera receives a voice instruction using headphones or the like.

(C) aims at a system in which an arbitrary monitoring point on an image displayed on the viewfinder 33a is specified, and an instruction for zoom-in imaging of the center portion is performed. The instruction symbol generation unit 32c includes a synchronization separation unit 32g that separates the HV synchronization signal from the image signal, and a VH coordinate calculation unit 3 that calculates and outputs the VH coordinates of the current display image.
2f and a display coordinate designating unit 32 for designating the display timing of the display symbol from the coordinate data added to the code signal.
e, and an instruction symbol generation unit 32c that generates a display symbol of the monitoring point instruction. The instruction display symbol is displayed and output on the screen at the coordinates (timing) designated by the display coordinate designation unit 32e. The instruction of the monitoring point by voice is performed by the voice demodulator 34.
By outputting the audio signal demodulated by c from the audio output unit 33c, it is possible to directly instruct with the voice of the instructor.

Referring to FIG. 3, the detailed operation of the direction indicating operation section 71 and the indicating signal generating section 72 in a plurality of embodiments will be described. (A) is the simplest configuration, and the direction instruction operation unit 71
Is provided with cursor switches SW1, SW2, SW3, SW4 for inputting left / right, up / down, front / back, enlargement / reduction, etc., or joystick type operation switches. The control code generator 72a generates a control code signal for monitoring point instruction control in response to an input from a cursor switch. Modulation unit 7
2b modulates and outputs a modulated wave signal for transmission by a control code signal.

(B) is a case in which the direction instruction operation unit 71 is input by a digitizer. Digitizer input is performed by a pen-touch type digitizer board (not shown) or a touch panel 71a having transparent touch electrodes provided on the monitor 6 screen. The instruction signal generation unit 72 in the input method of the touch panel 71a includes a synchronization separation circuit 75 that separates a synchronization signal from an input image signal, an address generation unit 72c that generates an address signal from the synchronization signal, A digitizer input unit 72d for inputting touch point data by input, a code conversion unit 72e for converting instruction data and monitoring point address data from the touch point data into an instruction code signal, and modulating and outputting a modulated wave signal for transmission using the instruction code signal And a modulator 72b.

(C) is a method of inputting an instruction of a monitoring point by voice. An audio signal from the microphone is input to an audio input unit 71.
b, and one of the outputs is input to the voice recognition unit 72f. The voice recognition unit 72f includes left, right, upper, lower, front,
From a simple word input such as after, voice recognition is performed to generate predetermined control data. The control code generator 72a generates a control code signal for monitoring point instruction control based on the control data, and the modulator 72b modulates and outputs a modulated wave signal for transmission based on the control code signal. The other audio output a is output from the modulation unit 7
2b, the modulation by the audio signal is performed directly, and the instruction transmitting unit 7
4 is sent.

FIG. 5 is an explanatory diagram of an embodiment of a wide-area operation type portable surveillance camera monitoring point indicating system according to the present invention. When the work site is located at a remote place from the business office, the monitor unit installed in the business office and the work site are connected by communication using a public line such as ISDN. Instruction signal generator 72
A public line 12 such as ISDN between the
And a communication control unit 10 for controlling communication connection with the public line 12
a, 10b and a converter 11 for converting and outputting a signal received via a public line into an original instruction code signal. The instruction code signal output from the instruction signal generator 72 is transmitted to the public line 12 by the communication controller 10a. The communication control unit 10 b installed at the work site receives the signal from the public line 12, converts the signal into the original instruction code signal by the converter 11, and outputs the signal to the transmission unit 74. The transmission section 74 sends the instruction code signal to the camera section by wireless transmission means.

[0023]

The present invention is embodied in the form described above, and has the following effects. An instructor who gives a monitoring instruction on the monitoring monitor operates the direction instruction operating unit to input an instruction. The instruction signal generation unit generates an instruction signal for instructing a monitoring point based on an input signal from the direction instruction operation unit, and wirelessly transmits the instruction signal to the portable monitoring camera unit via the instruction transmission unit and the instruction reception unit. The instruction signal generation unit demodulates the received modulation signal to generate an instruction signal, and outputs the instruction signal to the monitoring point instruction unit using symbols or characters indicating the direction of the monitoring point such as left, right, up, down, front and back. Further, symbols and characters indicating the direction of the monitoring point, such as left, right, up, down, front and back, are superimposed on the image of the portable surveillance camera of the viewfinder and displayed for output. Furthermore, by transmitting the instruction code signal from the instruction signal generation unit via a public line to the vicinity of the use site of the portable surveillance camera,
Remote use is possible. As described above, according to the embodiment of the present invention, a system is constructed in which the monitoring point of the portable monitoring camera is input from the direction instruction operation unit, transmitted by wireless means, and displayed to the camera operator.

[Brief description of the drawings]

FIG. 1 is a schematic system diagram of an embodiment of a mobile monitoring camera monitoring point indicating system according to the present invention.

FIG. 2 is a main part block diagram of a plurality of embodiments of mainly a portable monitoring camera unit according to the present invention.

FIG. 3 is a main part block diagram of a plurality of embodiments of a monitor section mainly according to the present invention.

FIG. 4 is a system diagram of a conventional surveillance camera system.

FIG. 5 is an explanatory diagram of an embodiment of a wide-area operation type portable surveillance camera monitoring point indicating system according to the present invention.

[Description of Signs] 1 Portable monitoring camera 2 Transmitting unit 3 Camera unit 4 Receiving unit 5 Demodulating unit 6 Monitor 7 Monitor unit 10a, 10b Communication control unit 11 Converter 12 Public line 31 Instruction receiving unit 32 Instruction signal generating unit 32a Device driver 32b Code demodulator 32c Instruction symbol generator 32e Display coordinate designator 32f VH coordinate calculator 32g, 75 Synchronization separator 33 Monitoring point designator 33a Viewfinder 33b, 73 Image synthesizer 33c Audio output unit 34a Audio data memory 34b Voice synthesis unit 34c Voice demodulator 71 Direction instruction operation unit 71a Touch panel 71b Voice input unit 72 Instruction signal generation unit 72a Control code generation unit 72b Modulation unit 72c Address generation unit 72d Digitizer input unit 72e Code conversion unit 72f Voice recognition unit 74 Instruction transmission Department

Claims (19)

[Claims] In a surveillance system, an output signal from a portable surveillance camera carried by a surveillance camera operator is transmitted to a surveillance monitor unit by a wireless transmission means such as a spread spectrum method. A demodulation unit that demodulates an output signal from the portable surveillance camera and outputs a demodulated image signal;
Up and down, a direction instruction operation unit for inputting a direction of a monitoring point such as front and back, an input signal from the direction instruction operation unit, an instruction signal generation unit for generating an instruction signal for a monitoring point, and modulated by the instruction signal. An instruction transmitting unit that transmits a modulated signal to the portable monitoring camera by wireless means, an instruction receiving unit that receives the modulated signal, an instruction signal generating unit that demodulates the received modulated signal to generate an instruction signal, and the instruction signal And a monitoring point instructing unit for displaying and outputting.The instructor who performs a monitoring instruction in the monitoring monitor unit inputs an instruction from the direction instruction operating unit, and the instruction signal generating unit transmits the instruction signal from the direction instruction operating unit. An instruction signal for instructing the direction of the monitoring point is generated based on the input signal, the instruction signal is wirelessly transmitted to the portable monitoring camera unit via the instruction transmitting unit and the instruction receiving unit, and the instruction signal generating unit receives the instruction signal. Demodulating the modulated signal to generate an instruction signal, wherein the monitoring point instruction unit displays and outputs the instruction signal with symbols or characters indicating the direction of the monitoring point such as left, right, up, down, front and back, and the like. Mobile surveillance camera monitoring point indicating system. 2. The monitoring point indicating unit is an LED (Light Emitting Diode) or a lamp, a code demodulating unit for demodulating an instruction code signal from the modulated signal received by the instruction signal generating unit, and driving the LED or the lamp. 3. The monitoring point indicating system for a portable monitoring camera according to claim 1, wherein the system is configured by a device driver. 3. The monitor point indicating section is a dedicated display panel such as an LCD (Liquid Crystal Display) panel or a PDP (Plasma Display Panel), and the indicating signal generating section demodulates an instruction code signal from the received modulated signal. 2. The mobile surveillance camera surveillance point indicating system according to claim 1, comprising a unit and a device driver for driving the LED or the lamp. 4. The monitor point indicating unit is also used as a view finder such as an LCD or a CRT (cathode tube) having an image synthesizing unit for superimposing a direction indicating signal on a signal from the portable surveillance camera. A code demodulation unit for demodulating an instruction code signal from the received modulation signal, and superimposing a sign or a character indicating a direction of a monitoring point such as left, right, up, down, front and back on the image of the portable surveillance camera on the viewfinder. 2. The mobile surveillance camera surveillance point indicating system according to claim 1, wherein the system outputs the information. 5. An HV coordinate calculator for calculating and outputting H (horizontal) and V (vertical) timings from the synchronization signal of the portable surveillance camera to the instruction signal generator, and a display included in the instruction code signal. At the position on the screen designated by the coordinate code and the H and V timings, a display coordinate designation unit for designating the coordinates of the designation symbol or the character is additionally installed, and the designation of the display coordinates in the portable surveillance camera image is performed. The mobile surveillance camera monitoring point indicating system according to claim 4, wherein the system is enabled. 6. The monitoring point instructing unit is an audio output unit that issues an instruction of a monitoring point by voice using external headphones or the like, and the instruction signal generating unit demodulates an instruction code signal from the received modulated signal. A voice demodulator, a voice data memory storing voice data, and a voice synthesizer for voice-synthesizing a voice signal of a monitoring point instruction from the instruction code signal and the voice data. Item 1
The monitoring point indicating system of the portable monitoring camera according to the above. 7. The monitoring point instructing unit is an audio output unit that issues an instruction of a monitoring point by audio using external headphones or the like, and the instruction signal generating unit is an audio demodulator that demodulates the received modulated signal audio signal. 2. The monitoring point indicating system for a mobile monitoring camera according to claim 1, wherein the voice output unit directly outputs a voice instruction from the instructor. 8. The control device according to claim 1, wherein the direction instruction operation unit is a cursor switch capable of performing input operations such as left, right, up, down, front and back, and the instruction signal generation unit is provided with a control code for a predetermined instruction by a selection input by the cursor switch. A control code generator that generates the signal; and a modulator that modulates and outputs a modulation signal transmitted from the instruction transmitter in accordance with the control code, and a predetermined control is performed by the instruction transmitter by the selection input by the cursor switch. 2. The mobile surveillance camera monitoring point indicating system according to claim 1, wherein the code signal is transmitted to the mobile surveillance camera unit by wireless transmission means. 9. The monitoring point indicating system for a portable surveillance camera according to claim 8, wherein a joystick operation unit having an operation lever operable in any direction is used instead of the cursor switch of the direction instruction operation unit. 10. A pen-touch type digitizer board as said direction indicating operation section, a digitizer input section for inputting a digitizer signal from said digitizer board, and said instruction code based on said digitizer signal. A code conversion unit for converting and outputting a signal; and a modulation unit for modulating and outputting a modulation signal transmitted from the instruction transmitting unit in accordance with the converted and output instruction code signal, and a monitoring point of the pen-touch type digitizer board. 2. A monitoring point instruction input by touching an instruction portion with a pen.
The monitoring point indicating system of the portable monitoring camera according to the above. 11. The display device according to claim 1, wherein the direction instruction operation unit is a touch panel having a transparent touch electrode provided on a display screen of the monitor, and the instruction signal generation unit is configured to address a synchronization signal of an image displayed and output on the monitor. An address generation unit that generates data, a digitizer input unit that outputs a digitizer signal such as an instruction code and an address code by an output signal from the touch panel, and a code conversion unit that converts and outputs the instruction code signal from the digitizer signal. A modulation unit that outputs a modulation signal transmitted from the instruction transmission unit based on the converted and output instruction code signal, and touches a monitoring point instruction portion of the touch panel to provide a monitoring point instruction input. The mobile surveillance camera monitoring point indicating system according to claim 1, characterized in that: 12. A modulating device comprising: a sound input unit such as a microphone as the direction instruction operation unit; and a modulation unit for outputting a modulation signal transmitted from the instruction transmission unit in response to an audio signal from the audio input unit. 2. The mobile surveillance camera monitoring point instruction system according to claim 1, wherein the instruction transmission unit is configured to directly modulate a voice of the instructor performing the monitoring instruction and transmit the modulated sound. 13. A voice recognition unit, wherein the direction instruction operation unit is a voice input unit such as a microphone, and the instruction signal generation unit recognizes and outputs predetermined voice input data from a voice signal from the voice input unit. A control code generator for generating a control code for a predetermined instruction from the audio input data; and a modulator for modulating and outputting a modulation signal transmitted from the instruction transmitter in accordance with the control code. 2. The mobile surveillance camera monitoring point indicating system according to claim 1, wherein the voice of the instructor input from the unit is recognized and used as a monitoring point instruction input. 14. The wireless communication apparatus according to claim 1, wherein the wireless transmission means of the instruction transmitting section and the instruction receiving section is wireless transmission means of the same spread spectrum modulation system as the transmission of the image.
The monitoring point indicating system of the portable monitoring camera according to the above. 15. The monitoring point indicating system for a portable monitoring camera according to claim 1, wherein the wireless transmission means of the instruction transmitting section and the instruction receiving section is wireless transmission means of a data transmission method using a weak radio wave. . 16. The mobile surveillance camera monitoring point instruction system according to claim 1, wherein the wireless transmission means of the instruction transmission unit and the instruction reception unit is a PHS wireless telephone unit using a wireless public line. . 17. The portable surveillance camera monitoring point indicating system according to claim 1, wherein the wireless transmission means of the instruction transmitting section and the instruction receiving section is a car telephone means using a wireless public line. 18. The system according to claim 1, wherein the instruction transmitting unit and the instruction receiving unit are infrared wireless transmission means for modulating and demodulating infrared rays with the instruction code signal and transmitting / receiving the same. . 19. An integrated service digital network (ISDN) between the instruction signal generator and the instruction transmitter.
And a public line, a communication control unit for controlling communication connection with the public line, and a converter for converting and outputting a signal received via the public line to an original instruction code signal, and additionally installing the instruction signal. 2. The monitoring point of the portable surveillance camera according to claim 1, wherein the instruction code signal from the generating unit is transmitted to the vicinity of the use site of the portable surveillance camera via the public line, and transmitted and output from the transmission unit. Instruction system.