JP2006098698A - Imaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera designed so that date and time printed on photographs are accurate and cannot be tampered. <P>SOLUTION: The camera C has the function of printing, years, dates, times and positions on a medium. In the camera C, a clock C3 for counting dates and times includes: a quartz clock 1 having a solar battery 3 as its power source; and a radio controlled watch 2 having a solar battery 3 as its power source as the quartz clock 1, which counts years, dates, and times by receiving standard time signal waves in which time codes are superimposed, and then corrects a time error caused by the quartz clock 1. The camera is designed so that years, dates, times, and positions cannot be tampered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tamper-proof camera, a video, and other imaging devices that are preferable for use in a house chart that records new construction / renovation histories of various houses such as detached houses and apartments.

  In recent years, defective housing has become one of the social problems. This is mainly because the purchaser cannot know the new construction / renovation history of the housing when purchasing the housing. In particular, in the case of a built-up house, since a purchase contract is made after the house is completed, it is impossible to visually confirm the structure of the parts such as the foundation part, the floor, the inside of the wall, the ceiling and the roof, and the materials used there.

  Therefore, a system for recording and managing a history from new construction to renovation of houses has been proposed (Patent Documents 1 and 2). This system uses a housing chart that records the history of new construction and renovation of a specific house, so even if it is a built house or a second-hand house, the structure and use of parts that cannot be seen by referring to the house chart The material can be confirmed, and it is possible to prevent a defective house from being purchased by mistake.

  By the way, in order to create the above-mentioned house chart, the new construction / renovation history of a house is taken as a photograph (including still images and videos; the same applies hereinafter), and this is edited. There is a need to. And since this shooting date / time is one of the important information of the house chart, it must be an accurate absolute date / time that will not be altered.

However, cameras and videos with a date mechanism that have been marketed in the past have a date and time adjustment function that can always change the date freely, and can be used to adjust the date and time accurately. Therefore, if this date and time adjustment function is abused, the shooting date and time of the above-mentioned photograph for residential chart can be altered. Therefore, increasing the reliability of photographs is essential for the practical use of residential charts.
JP 2004-70811 A JP 2004-70812 A

SUMMARY OF THE INVENTION An object of the present invention is to provide an imaging apparatus that is accurate and cannot be tampered with on the date and position where the image is printed.
In order to achieve the above object, an imaging apparatus according to the present invention is an imaging apparatus having a function of printing date, time, and position on a medium, and a clock that counts date, time, and power supplies a solar cell. And a radio timepiece that receives a standard radio wave on which a time code is superimposed, counts the date and time, corrects the time error due to the crystal timepiece, and also uses a solar cell as a power source. Moreover, it has GPS for measuring a position. The date, time, and position cannot be tampered with.

  In the present invention, since the solar battery is adopted as the power source of the quartz timepiece and the radio timepiece, the timepiece does not stop even if the battery is not replaced. In addition, a quartz watch is used to count the date and time. Since the error of the quartz watch is periodically corrected by the radio clock, the date and time can be displayed semi-permanently. Or when it is configured as a video) or electronic data (when configured as a digital camera or video). Moreover, since it has GPS, an imaging position, that is, longitude, latitude, and altitude can be specified. Moreover, in the image pickup apparatus of the present invention, it is impossible to manually correct the date, time, and position. Therefore, the date, time, and position printed on the medium are the so-called absolute time. Therefore, it is highly reliable that is officially recognized as an absolute position, and can be used as a preferable tamper-proof imaging device particularly for use in a house chart for recording a new construction / renovation history of a house.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of a camera C (imaging device) according to the present invention, which is a liquid crystal display that displays the date and time (latitude, longitude, altitude) exposed outside the casing C1 of the camera C. Section C2, clock C3 for counting date and hour / minute / second data displayed on liquid crystal display section C2, GPS (Global Positioning System) device C12 for measuring the position displayed on liquid crystal display section C2, and liquid crystal display section The light source C4 that illuminates the shape indicating the time data and the position data displayed on C2 at the timing when the shutter signal is received, and the mirror C6 and the slit C7 provided on the optical path C5 that guides the light emitted from the light source C4. The optical system includes a lens C9 provided on an optical path C8 that guides the subject image H, and a shutter C10 that controls light in the optical paths C5 and C8. In the figure, F0 is a film.

  Further, C11 is an ID mark for identifying the camera C or an authentication mark such as a public institution that is printed on the photograph together with the date and time and position. Since this camera C is used when taking a picture of the above-mentioned house chart, it is a mark for proving that the date and time shown in the picture is a reliable value.

  A photograph F photographed using this camera C is shown in FIG. 2. The photographed date and hour / minute / second F2 are printed on the lower right of the subject F1, and an ID mark for identifying the camera C is adjacent to the photograph. The official authentication mark F3 is printed, and the latitude, longitude, and altitude (altitude above sea level) indicating the position photographed next are printed.

  Returning to FIG. 1, the GPS device C12 according to the present embodiment measures the arrival time of radio waves emitted from an artificial satellite, calculates the distance from the satellite, and acquires the position of itself, It has the position indicator 5 for displaying the latitude acquired by the GPS sensor 4, that is, the latitude, longitude and altitude of the camera C. Then, by printing the latitude, longitude, and altitude displayed on the position indicator 5 (liquid crystal display unit C2) on the photograph F, the place where the photograph was taken can be specified, and the reliability as evidence is increased. become.

  The camera C of this embodiment does not include an adjustment switch so that the position of the GPS device C12 cannot be manually adjusted, and GPS components are not provided so that each circuit in the GPS cannot be artificially adjusted. It is solidified by coating with resin.

    The timepiece C3 according to the present embodiment includes a quartz timepiece 1, a radio timepiece 2, and a solar battery 3 that is a power source for the quartz timepiece 1 and the radio timepiece 2.

    The quartz watch 1 includes an oscillator 11 including an oscillation circuit that oscillates a frequency of 32768 Hz, a frequency divider 12 that divides the 32768 Hz signal and generates a 1 second signal (second signal), and the frequency divided. An hour / minute / second counter 13 that inputs a second signal and generates a time display signal, and a time indicator 14 that displays the time from the hour / minute / second counter. The hour / minute / second counter 13 corrects the hour / minute / second data in accordance with an instruction from the time data decoding circuit 20 described later, and displays the corrected data on the time display 14. This time indicator 14 is the liquid crystal display C2 described above.

    The radio timepiece 2 is composed of a 40 kH receiving circuit 21, a time data decoding circuit 22 connected to the 40 kH receiving circuit 21, and an antenna 23, and the time data decoding circuit 22 is connected to the hour / minute / second counter 23 of the quartz timepiece 1 described above. Has been.

    The 40 kHz reception circuit 21 includes an amplifier 211 that amplifies the radio wave received by the antenna 23, a detector 212 that detects the signal amplified by the amplifier 211, and a time code TC (1 second) from the signal detected by the detector 212. It is composed of a demodulator 213 that demodulates a signal sent in units and whose rise corresponds to the start of 1 second of the time of the clock. The time data decoding circuit 22 includes a signal detection circuit 221, a control circuit 222, and a buffer memory 223 that separates the standard 1 second signal and the data signal from the time code TC from the 40kH reception circuit 21.

  The solar cell 3 as a power source is connected so as to apply a voltage to the transmitter 21 of the quartz timepiece 1 and to supply power to the control circuit of the radio timepiece 2.

  Note that the camera C of the present embodiment is not provided with an adjustment switch so that the time adjustment of the watch C3 cannot be manually performed, and each circuit mounted on the substrate so that each internal circuit cannot be artificially adjusted. The parts are covered with resin and solidified. That is, the timepiece C3 of the camera C of the present embodiment has a structure in which the time cannot be adjusted manually once the solar battery 3 is switched on.

    The operation of the watch C3 shown in FIG.

    In Japan, a long-wave standard radio wave with a time code superimposed is transmitted from various places in Japan. A frequency of 40 kHz is used for this standard radio wave, and it is accumulated from January 1 with 60 seconds as one cycle. Data such as the number of days, hours, and minutes are transmitted in binary code. One bit is formed by a rectangular pulse of 1 hertz, and data contents are set by different pulse widths.

  In the timepiece C3 of this embodiment, the 40 kH receiving circuit 21 starts operating when the power switch of the solar cell 3 is turned on. The received signal received by the antenna 23 is amplified by the amplifier 211, the received signal is detected by the detector 212, and the time code TC is demodulated by the demodulator 213. The time code TC is normally demodulated when the radio wave reception intensity is sufficiently high and is not affected by noise.

    In the next time data decoding circuit 22, the time code TC output from the demodulator 213 is input to the signal detection circuit 221 of the time data decoding circuit 22. The signal detection circuit 221 samples the time code TC, detects a rising edge to generate a second signal, and simultaneously decodes the data signal from the time code TC. When the signal detection circuit 221 detects the rising edge of the time code TC, the signal detection circuit 221 performs the following determination and outputs the determination to the control circuit 222.

    That is, (1) When the low level continues for 0.2 seconds ± 5 msec after becoming high for 0.8 sec ± 5 msec, “0” is judged, and (2) 0.5 sec ± 5 m If the low level continues for 0.5 seconds ± 5 m seconds after becoming high level for 2 seconds, it is judged as “1”. (3) After becoming high level for 0.2 seconds ± 5 m seconds, 0.8 When the low level continues for ± 5 msec., “Position (P)” is determined. (4) The previous data is “Position (P)” and the current data is also 0.2 sec. ± 5 msec. If it is high level and then low level continues for 0.8 seconds ± 5 msec, “marker (M)” is judged. (5) Other than (1) to (4) above and 1 second If the next rising edge cannot be detected within ± 10 msec, “error” is determined.

    The control circuit 222 stores the data from the signal detection circuit 221 in the buffer memory 223 and adds 1 to the memory address pointer. When an error occurs, the memory address pointer is set to 0, and the state returns to the state where the first rising edge is detected. When data is stored in the buffer memory 223, “marker (M)” data is detected. When this state is first detected, the memory address is stored in the marker address pointer. Further, when data is stored in the buffer memory 223 and the number of data including the “marker (M)” data reaches 120, a time code TC continuous for 2 minutes is obtained. If an error occurs in the middle, the marker address pointer is cleared, the memory address pointer is set to 0, and the process returns to the state where the first rising edge is detected.

    When the continuous time code TC for 2 minutes is stored in the buffer memory 223, the data of the time code TC for the first and second minutes is extracted from the buffer memory 223. At this time, since the address of the marker address pointer is not constant, the second position of the time code TC is set as an offset based on the address stored in the marker address pointer. By adding the base and the offset, the data of the parities PA1 and PA2 can be extracted from the buffer memory 223 for the first minute. The second minute data can be similarly extracted by using the address stored in the marker address pointer plus 60 as a base.

    Compare the time code TC data of the 1st minute and the 2nd minute, and confirm that the data other than the minute, hour, PA1, PA2 data are the same, and the minute and hour data are 1 Confirm that the minute is set to +1 minute. In addition, each parity is calculated from the minute and hour data, and it is confirmed whether or not the values are the same as the values of PA1 and PA2 in the first and second minutes. If all are OK, the received time code TC is considered valid. When the time code TC is valid, data of “minute” and “hour” which is +1 minute is prepared for the time code TC of the second minute, and the display of the quartz clock 1 is corrected simultaneously with the next second transmission.

  Here, the time correction operation of the radio timepiece 2 will be described. The control circuit 222 of the time data decoding circuit 22 receives radio waves once every hour and corrects and displays the built-in clock, thereby eliminating the display time error. One reception is continued for two minimum time codes TC (two consecutive minutes) until the correct time code TC can be received continuously. The reception is continued for a maximum of 10 minutes (preliminarily incorporated time), but the time display is not corrected if the correct time code TC is not obtained. Then, reception is performed again at the next hour on the built-in clock. At this time, when the correct time code TC is received, the time of the built-in clock is corrected.

    Also, when the standard radio wave is received with noise, the time cannot be corrected or the time is erroneously corrected. Therefore, re-reception is performed by regarding a case where reception cannot be continued for one cycle or more as a reception error. In addition, two cycles (two minutes) of continuous reception are performed, the two preceding and following cycles are compared and inspected, and radio wave reception reliability is checked. Furthermore, when it cannot be received from 00 seconds, continuous reception is performed for a maximum of 180 seconds (3 minutes).

  As described above, according to the camera C in which the watch C3 and the GPS device C12 of the present embodiment are incorporated, the solar cell 3 is adopted as the power source of the quartz watch 1 and the radio watch 2, so the watch can be replaced without replacing the battery. Will never stop.

  In addition, the quartz clock 1 is used for counting the date and time, but since the error of the quartz clock 1 is periodically corrected by the radio clock 2, the date and time that is semi-permanently accurate can be It can be baked on a medium such as

  Further, since the shooting position is also printed on the photo F by the GPS device C12, the specific reliability of the shooting location is increased.

  Moreover, in the camera C of the present embodiment, it is impossible to manually correct the date, time, and position, so the date, time, and position printed on the film are so-called absolute. It becomes highly reliable that is officially recognized as time and absolute position, and can be used as a preferable tamper-proof camera particularly for use in a house chart that records a new construction / renovation history of a house.

  Furthermore, since the ID mark and the public authentication mark for specifying the camera that has taken the photograph are also printed next to the time when the photograph is printed, the proof of the evidence photograph is remarkably improved.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

It is a block diagram which shows embodiment of the camera which concerns on this invention. It is a figure which shows an example of the photograph image | photographed with the camera which concerns on this invention.

Explanation of symbols

C ... Camera C1 ... Housing C2 ... Liquid crystal display C3 ... Clock C4 ... Light source C5, C8 ... Optical path C6 ... Mirror C7 ... Slit C9 ... Lens C10 ... Shutter C12 ... GPS device H ... Subject image F ... Photo F1 ... Subject F2 ... year / month / day / hour / minute / second F3 ... ID mark 1 ... quartz clock 2 ... radio clock 3 ... solar cell 4 ... GPS sensor 5 ... position indicator

Claims (2)

An imaging apparatus having a function of printing date, time and position on a medium, wherein the clock for counting the date, time and time is a quartz crystal clock powered by a solar cell and a standard radio wave on which a time code is superimposed. The time and date are counted, the time error due to the quartz clock is corrected, and a radio clock using a solar cell as a power source is included, the GPS is used to measure the position, and the date An imaging apparatus, wherein the date, time, and position cannot be altered. The imaging apparatus according to claim 1, further comprising a function of printing an ID mark or an authentication mark for identifying the imaging apparatus on the medium.

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