(19) Japan Patent Office (JP)
`
`(11) Japanese Unexamined
`Patent Application
`Publication Number
`H4-73631
`
`(12) Japanese Unexamined Patent
`Application Publication (A)
`JPO file number
`(43) Publication date: 09 Mar 1992
`
`(51) Int. Cl.5
`
`Identification
`codes
`7542-2K
`B
`G03B 17/38
`7542-2K
`Z
` 17/18
`Examination request: None Number of claims: 1 (Total of 11 pages [in the original
`Japanese])
`
`(54) Title of the
`invention
`
`(72) Inventor
`
`(71) Applicant
`(74) Agent
`
`REMOTE RELEASE DEVICE-EQUIPPED CAMERA
`
`(21) Japanese Patent
`Application
`(22) Filing date
`Osamu Nonaka
`
`Olympus Optical Co., Ltd.
`Susumu Ito, patent attorney
`
`H2-185725
`
`13 July 1990
`c/o Olympus Optical Co., Ltd.
`2-43-2 Hatagaya, Shibuya-ku, Tokyo
`2-43-2 Hatagaya, Shibuya-ku, Tokyo
`
`1. Title of the Invention
`Remote Release Device-Equipped Camera
`
`Specification
`
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`2. Claims
`(1) A remote release device-equipped camera, characterized by comprising:
`a remote release instruction means for giving an instruction for a remote
`release operation,
`
`a display means for providing a display to a subject in response to the remote
`release operation,
`a detection means for detecting a change in distance or a speed of the subject
`during the display operation afforded by the display means and for outputting a
`detection signal when there was a change in distance or the speed was within a
`predetermined range, and
`an exposure control means for carrying out an exposure operation when the
`detection means has detected a change in the distance or speed.
`
`3. Detailed Description of the Invention
`[Field of Industrial Application]
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`The present invention relates to a remote release device-equipped camera,
`
`and more specifically relates to a camera which has a device enabling remote release
`operations.
`
`[Prior Art]
`
`So-called self-timer mechanism-equipped cameras, in which exposure is
`initiated a predetermined amount of time after a photographer presses a release
`button, have become very common. Furthermore, developments in photography
`using self-timers have also been seen, to the extent that the camera emits a signal
`such as light or sound immediately prior to exposure to alert the person or persons
`who are the subjects.
`
`Moreover, in recent years, proposals have also been made for remote control
`systems which use a remote control unit to carry out remote operation of release
`timing. For example, the camera disclosed in JP H1-310332A is a camera having a
`remote control function, wherein the control operation thereof is such that, as shown
`in FIG. 13, the photographer presses a transmission button on a transmitter 52 to
`transmit an optical or electromagnetic, etc., signal to a receiving unit 51 in a camera
`50, and the camera detects the transmitted signal and executes a release operation.
`
`[Problem to be Solved by the Invention]
`
`However, the aforementioned conventional remote control device-equipped
`camera requires both a transmitter and a receiver, making the configuration complex
`and raising costs. Furthermore, because the transmitter is normally carried while
`housed inside the camera, the camera body becomes that much larger, among other
`drawbacks.
`
`An objective of the present invention lies in providing a remote release
`device-equipped camera which enables remote release operations without using a
`transmitter or receiver to give a release instruction, thereby achieving a higher
`degree of freedom, good portability, and cost benefits.
`
`[Means for Solving the Problem and Action]
`
`A remote release device-equipped camera according to the present invention
`is characterized by comprising: a remote release instruction means for giving an
`instruction for a remote release operation, a display means for providing a display to
`a subject in response to the remote release operation, a detection means for detecting
`a change in distance or a speed of the subject during the display operation afforded
`by the display means and for outputting a detection signal when there was a change
`in distance or the speed was within a predetermined range, and an exposure control
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`means for carrying out an exposure operation when the detection means has detected
`a change in the distance or speed, the change in distance or speed being provided to
`the subject during the display operation afforded by the display means, and the
`exposure operation being carried out on the basis of this change.
`
`[Exemplary Embodiments]
`
`The present invention will be described below with reference to exemplary
`embodiments in the drawings.
`
`FIG. 1 is a block configuration view of principal parts of a remote release
`device-equipped camera showing a first exemplary embodiment of the present
`invention, the principal parts of the present camera being configured by a CPU 1
`which controls the overall system, a distance measuring device 2, which is the
`detection means for detecting a change in distance of the subject and for outputting
`a detection signal on the basis of this change, a display device 4 which is the display
`means for providing a display to the subject, using a high-brightness LED as a
`display unit, an exposure device 5, which is the exposure control means, and a mode
`switch 3 which is the remote release instruction means for selecting the remote
`release mode. First, an overview of operation of remote release by the camera
`according to the present exemplary embodiment will be described with reference to
`the time chart in FIG. 2 and the view showing distance measurement in FIG. 3.
`
`For the release in the remote release processing mode of the present camera,
`a predetermined motion by the subject 10, who is the photographer, in conjunction
`with the display timing of the display device 4 is detected, and exposure is carried
`out on the basis of a detection signal thereof. Display by the display device has three
`display formats, namely display patterns I, II, and III. These displays are always
`visible from the subject side. The patterns I and II form a pair in which the display
`pattern I is multiple flashes of a display LED 4a as indicated by the display output
`of the display device in FIG. 2, and the display pattern II is continuous illumination
`of the LED 4a for a relatively short amount of time. The patterns I and II are repeated
`at predetermined intervals T₀ as shown in FIG. 2.
`
`Furthermore, the pattern III is a pattern displayed to warn of shutter release
`immediately prior to the exposure operation, and is a repeated flashing for a
`predetermined amount of time.
`
`With the remote release of the camera according to the present exemplary
`embodiment, the photographer gives a release instruction by means of a
`predetermined motion towards the camera in conjunction with the display timing of
`the aforementioned display patterns, the distance measurement device 4 detects this
`motion by the subject 10, and exposure is carried out. Specifically, as shown in FIG.
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`3(A) (B), the photographer, who is the subject 10 located within the distance
`measurement range, performs a motion such as moving his or her hand forward, for
`example, synchronously with the display of the pattern I by the display LED 4a of
`the camera 11 when he or she wishes to release the shutter. The distance
`measurement device 2 detects the location of this motion, and the distance
`measurement value thereof is imported as ℓ₁. Furthermore, if the photographer
`moves his or her hand down to set the photography state when the pattern II is
`displayed, the distance measurement value of that motion is imported as ℓ₂. The
`distance measurements in these cases may be made immediately after the pattern
`displays are output and/or during output.
`
`If there is a difference between the distance measurement values ℓ₁ and ℓ₂,
`the same confirmation operation is repeated thereafter. This repetition serves to
`distinguish with greater certainty between cases where the subject 10 accidentally
`moved and cases where the subject 10 made a motion in order to give the release
`instruction. If the distance measurement in conjunction with each of the patterns is
`repeated twice, and a change in the difference in distance of the distance
`measurement values ℓ₁ and ℓ₂ is within a predetermined range in the two distance
`measurement results, the camera determines that the photographer has given a
`release instruction. The pattern III is then displayed and exposure is carried out.
`
`Next, a remote release process by the camera according to the present
`exemplary embodiment will be described with reference to the flowchart in FIG. 4.
`
`First, when the mode switch 3 is turned on to instruct the remote release
`mode, the remote release process starts and a distance measurement repeat count m
`is reset to 0 (step S101). Next, the display pattern I is output by the display LED 4a
`of the display device 4 (step S102). The distance measurement value ℓ₁ of the
`distance to the subject is then imported by the distance measurement device 2 (step
`S103). The display pattern II is also output and the distance measurement value ℓ₂
`is measured (steps S104 and S105). In steps S102 to S105 above, the photographer,
`who is the subject 10, moves his or her hand forward in response to display of the
`pattern I as described above when he or she intends for the shutter to be released,
`and lowers his or her hand in response to the display of the pattern II. If there is no
`intent for the shutter to be released, this motion is not made.
`
`Next, the count m is incremented (step S106) and the difference between the
`distance measurement values ℓ₁ and ℓ₂ is read as a distance difference Δℓ(m) (step
`S107). In cases where the hand is moved forward, this distance difference Δℓ(m) is
`a value substantially equal to the length of an arm. The process only returns to step
`S102 if the count m is 1, i.e. during the first distance measurement, or if the value
`Δℓ(m) is 0, i.e., there has been no change, and the process proceeds to step S110 in
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`all other cases. Here, the value of the difference between the final distance difference
`Δℓ(m) and the preceding distance difference Δℓ(m-1) is imported as a fluctuation
`value Δɛ. If this fluctuation value Δɛ is within a predetermined range, i.e. between
`values ℓN and ℓF, then the photographer has carried out a predetermined motion for
`instructing release twice in a row, and therefore the CPU 1 proceeds to step S113 on
`the assumption that an instruction to carry out release has been made. After display
`of the pattern III has been output, the exposure process is carried out (step S114),
`and the remote release operation is terminated. On the other hand, if in step S111 the
`fluctuation value Δɛ is not within the predetermined range, then the operation
`instructing release has still not been detected twice in a row, and it is determined that
`the photographer does not yet intend to execute release. The process returns to step
`S102, and distance measurement is repeated in a range such that the count m does
`not exceed 50 times. If 50 times is exceeded without the aforementioned conditions
`being satisfied, it is determined that either a problem has occurred with distance
`measurement or there is no intent to instruct release, and the process is terminated.
`
`As described above, with the camera according to the present exemplary
`embodiment, there is no particular need for the receiver 51 and the transmitter 52 for
`remote operation, which would be needed in conventional examples, making it
`possible to carry out remote release using a shutter timing based on the intent of the
`photographer. Moreover, since release is performed only when the motion for
`instructing release has been made twice in a row, there is no uncertainty about the
`remote release operation. Furthermore, the camera is easy to use because the number
`of repetitions is limited to a predetermined value, 50 times in the present exemplary
`embodiment, meaning that the process exits remote release mode automatically if
`no instruction is given for a long period of time. Note that it is also possible to cancel
`the remote release mode each time remote release is completed once.
`
`As a variant example of the aforementioned exemplary embodiment, a
`camera capable of remote zoom instructions can be proposed. In a camera 11', output
`of a display pattern by a display device is repeated three times. For example, as
`shown in FIG. 5(A), (B), (C), when zooming towards the telephoto side, the
`photographer, who is the subject 10, first moves his or her hand forward in time with
`the display of the pattern, and this distance measurement value is ℓ₁ (FIG. 5(A)).
`Next, the hand is lowered during display of the following two patterns, and that
`distance measurement value is ℓ₂ (FIG. 5(B), (C)). Meanwhile, as shown in FIG.
`6(A), (B), (C), when zooming towards the wide angle side, the hand is extended
`during display of the first two patterns, and the distance measurement value is ℓ₁
`(FIG. 6(A), (B)). The hand is lowered during display of the last pattern, and that
`distance measurement value is ℓ₂ (FIG. 6(C)). Thus, the intent to set the zoom, i.e.,
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`give telephoto or wide angle instructions, is communicated to the camera by means
`of motions by the subject synchronously with display of patterns, and zooming is
`carried out on the basis of those instructions.
`
`Thus, with the present variant example, it is possible to provide a camera
`with higher functionality, which enables more complex remote control even without
`a transmitter or receiver.
`
`Note that in the display device of the foregoing exemplary embodiment and
`variant example, a high-brightness LED was used in the display unit so as to be
`visible to the subject, but it is also possible to use a sound emitting element such as
`a PCV, etc., in the display unit.
`
`A remote release device-equipped camera representing a second exemplary
`embodiment of the present invention will be described next. In contrast to the first
`exemplary embodiment, the intent of the photographer to give a release instruction
`in the present exemplary embodiment is detected by the speed of movement of the
`subject 10. Specifically, if the photographer, who is the subject 10, intends to give a
`release instruction, the photographer moves his or her hand, etc. at a certain speed
`within the distance measurement range of a distance measurement device in
`response to display of the pattern I from the camera 11' (see FIG. 7). If that speed v
`is within a predetermined range (v₁ < v < v₂), and motion of the hand, etc. is stopped
`or the like to set the photography state in response to display of the pattern III, and
`it is recognized that a speed change occurred, the release instruction is deemed to
`have been output with certainty, and exposure is carried out. Note that the motion
`will be treated as a release instruction only when the speed of the subject is detected
`as being in the predetermined range in the first display pattern I, and a change in the
`predetermined speed occurs in the display pattern III, so cases such as when the
`subject makes an accidental motion can be excluded from release instruction
`operations.
`
`The principal configuration of the camera according to the present exemplary
`embodiment is the same as the configuration of the first exemplary embodiment
`shown in FIG. 1. However, a distance measurement device 2' has built-in integration
`circuitry for obtaining the motion speed v on the basis of the distance of the subject
`at predetermined timings. A distance measurement optical system of the distance
`measurement device 2' is similar to a conventional active triangulation-type distance
`measurement unit as shown in FIG. 8. In FIG. 8, AF (autofocus) light is projected
`towards the subject 10 via a projection lens 12 from an IRED (infrared emission
`diode) 14. The reflected light of the AF light from the subject 10 is received via a
`collector lens 13 and imaged on a PSD (position detection element) 15. Note that the
`IRED 14 and the PSD 15 are both disposed in the location of the focal distance f of
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`the projection lens 12 and the reception lens 13, and both of the lenses 12, 13 are
`disposed in the location of a principal point-to-point distance, i.e., a base line length
`s. Note that during speed detection, the IRED 14 is caused to flash at a predetermined
`interval Δt.
`
`In the distance measurement optical system arranged in this way, an
`incidence position x of the reflected light is expressed by the following equation
`from the principle of triangulation using a subject distance ℓ.
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`The PSD 15 outputs two photoelectric current signals I₁, I₂, the photoelectric
`
`current values of which are found as functions of the incidence position x of the AF
`light, as in the following equations.
`
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`
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`Here,
`Ipφ: total photoelectric current
`
`tp: effective light reception surface length of the PSD 15
`
`a: distance to the effective light reception surface end of the PSD 15 on the
`
`IRED 14 side from a point where a line, which passes through the principal point of
`the light reception lens 13 and is parallel to a straight line joining the light emission
`center of the IRED and the principal point of the projection lens, intersects the light
`reception surface of the PSD 15.
`
`The ratio of I₁ and I₁ + I₂ is obtained as in the following equation from
`equations (2) and (3) above:
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`Note that in FIG. 8, the distance ℓmin indicates the closest subject distance
`
`measurable by the PSD 15.
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`FIG. 9 shows a circuit for detecting a motion speed of the subject
`incorporated in the distance measurement device used in the present exemplary
`embodiment. In FIG. 9, the photoelectric currents of the PSD 15 are amplified by
`low input impedance preamplifiers 16, 17, and the output currents I₁, I₂ thereof flow
`into compression diodes 18, 19 for removing the steady photoelectric current I₀
`component. The compression voltages of the compression diodes 18, 19 pass
`through buffer circuits 20, 21 and output voltages VA, VB thereof are input into a
`differential computation circuit configured by NPN transistors 22, 23 and a current
`source 27 having a current value of Iφ1 .
`
`The relational equations between a terminal voltage VZ of the current source
`27 of the differential computation circuit and the voltages VA, VB are:
`
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`Here,
`
`Ia: current flowing to the transistor 23
`
`Ib: current flowing to the transistor 22
`
`Is: reverse saturation current of the diodes 18, 19 and the transistors 22, 23
`
`VT: thermal voltage
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`Vref: reference voltage of the compression diodes
`
`Furthermore, the sum of the currents Ia, Ib is equal to the current Iφ1 of the current
`source 27, resulting in:
`
`
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`From equations (5), (6), and (7) above we obtain the relational equation:
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`Accordingly, the relational equation for the signal current value Ia and the
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`subject distance ℓ is obtained from equations (4) and (8) above. Specifically:
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`showing that the inverse of the current value Ia and the distance ℓ have a linear
`relationship.
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`A compression diode 24 and a current source 25 are connected in parallel to
`a collector terminal of the transistor 23. A current value Ic of the current source 25
`is:
`
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`where a current value Id is the value of a current flowing through the compression
`diode 27 to a current source 28. Furthermore a current value Ix flowing to the
`compression diode 24 is indicated by Ia to Ic, but when equations (9) and (10) are
`substituted in, we obtain:
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`Furthermore, the compression voltage values of the compression diodes 24,
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`27 are input via respective buffers 26, 29 to a differential computation circuit
`configured by transistors 30, 31 and a current source 32 having a current value of
`Iφ2. This circuit has the same form as the differential computation circuit configured
`by the transistors 22, 23 and the current source 27 described above. A collector
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`current Iℓ of the transistor 31 which is the output current of the differential
`computation circuit is expressed by:
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`since the compression diodes 24, 27 produce a compression voltage using a power
`source-side reference. Substituting equation (11) with equation (12), the output Iℓ is:
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`and this output voltage Iℓ indicates a value proportional to the subject distance ℓ.
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`Meanwhile, in the present exemplary embodiment, the motion speed of the
`subject has to be detected in accordance with output of the display patterns. It is not
`necessarily the case that the motion speed is fixed throughout the measurement
`period. This means that errors may occur depending on variations in the
`measurement results. In the present exemplary embodiment, changes in the subject
`distance during the measurement period are therefore integrated to find the average
`speed thereof.
`
`A speed detection circuit according to the present exemplary embodiment
`will be described. Output of the differential amplification circuit is first of all
`connected to the circuit which detects the motion speed of the subject. Specifically,
`a current mirror circuit comprising PNP transistors 33, 34 is connected to the
`collector side of the transistor 31, and an integrating capacitor 37 is additionally
`connected via an integration switch 36. Additionally, the collector of the transistor
`34 constituting the current mirror circuit is connected to the capacitor 37 via an
`integration switch 35. In addition, the capacitor 37 is connected to a reset circuit 38.
`Furthermore, detection output for computing the speed is output from an output
`terminal 39 connected to the capacitor 37.
`
`The switches 35, 36 are turned on and off synchronously with flashing light
`emission of the IRED 14 described above. Specifically, control is carried out such
`that the switch 35 is turned on (closed) only during odd-numbered times of light
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`emission from among the times of light emission by the IRED 14, and the switch 36
`is turned on (closed) only during even-numbered times of light emission. In addition,
`the charge in the integrating capacitor 37 is discharged by the reset circuit 38 and
`returned to the initial state ahead of light emission by the IRED 14 for speed
`detection.
`
`Operation of the speed detection unit configured in this way is such that the
`switch 35 is first of all closed during the first light emission, which is odd-numbered
`light emission by the IRED 14, in which case the output current of the transistor 34
`based on the current Iℓ corresponding to the subject distance ℓ at that moment flows
`into the integrating capacitor 37, and the voltage of the output terminal 39 increases
`in the forward direction during a light emission time interval τ of the IRED 14. The
`integrated voltage value corresponds to the trapezoidal area S₁ enclosed by the
`subject distance ℓ(t) and the time interval τ for elapsed time t = τ shown in FIG. 10.
`
`Next, during even-numbered light emission by the IRED 14, the switch 36
`side is closed. The voltage of the integrating capacitor 37 falls in the reverse
`direction during the light emission time interval τ due to discharge, correspondingly
`with the subject distance at that time. The amount of this fall in the reverse direction
`of the integrated voltage value corresponds to a trapezoidal area S₂ enclosed by the
`subject distance ℓ(t) and the time interval τ from elapsed time t = Δτ to t = Δt + τ
`likewise shown in FIG. 10. The actual output voltage value corresponds to a value
`obtained by multiplying the light emission time interval τ (equal to the integrated
`time interval) by the difference between these trapezoidal areas S₁ and S₂, i.e., the
`difference in the subject distances at the forward and reverse integral times.
`
`Furthermore, the above charge and discharge are repeated when the third and
`fourth IRED 14 light emissions are received. The terminal voltage is output from the
`output terminal 39, and the output voltage (ΔVOUT value) thereof corresponds to the
`cumulative value of values of the product of the integral time τ and the difference
`between the subject distances at each point in time of the forward and reverse
`integrals corresponding to the total distance measurement count. Accordingly, the
`subject speed can be obtained, for example, by dividing this value by the total T of
`the forward integral time and the distance measurement interval Δt, which is the
`execution time interval of the forward and reverse integrals.
`
`The equation for computing this motion speed will be described in detail
`using the diagram of changes in subject distance in FIG. 10 and the time chart of
`distance measurement timing and output voltage in FIG. 11.
`
`The subject distance ℓ(t) after elapsed time t is:
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`where ℓ₁ is the first position of measurement and v is the motion speed. For the
`output current Iℓ of the differential amplification circuit described above, the subject
`distance ℓ in equation (13) is substituted with ℓ(t), A is posited as the constant of
`proportionality and substituted into equation (14), and we obtain:
`
`
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`Meanwhile, the output voltage VOUT output to the output terminal 39 on the
`
`basis of the reference voltage Vref of the integrating capacitor 37 is expressed in the
`form of:
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`Here, VOUT1 indicates the total value of the output voltages due to the forward
`integral during odd-numbered distance measurements, and VOUT2 indicates the total
`value of the output voltages due to the reverse integral during even-numbered
`distance measurements.
`
`Furthermore, the output voltage VOUT1 becomes:
`
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`when equation (15) is substituted, T being the total integral time, which is the total
`of the forward integration execution times of each light emission time τ of the IRED
`14. Here, C represents the electrostatic capacitance of the integrating capacitor 37.
`In addition, the integral segments (0 to T) in the above equation are equivalent to all
`of the odd-numbered distance measurement periods τ shown in FIG. 11.
`
`Furthermore, VOUT2 is likewise found with T as the total integral time in the
`reverse direction, but the integration is performed at a timing shifted by the distance
`measurement interval Δt, as shown in FIG. 11.
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`In other words,
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`In this case also, the integral segments (Δt to T + Δt) in the equation are equivalent
`to all of the even-numbered distance measurement periods τ.
`Accordingly, the output voltage value ΔVOUT, which is the detection value
`
`for computing the speed of the subject 10 in relation to the camera, is obtained as:
`
`
`
`The motion speed v of the subject 10 can finally be found by modifying equation
`(19):
`
`
`
`
`
`
`
`Here, D is a constant determined by the distance measurement interval and total
`integral time, etc. on the circuit. In addition, the total integral time T is the total of
`each light emission time τ of the IRED 14 in the forward or reverse direction, as
`described above, and when T₁ is the total of the light emission time τ, then in the
`case of a 1/2 light emission duty, the total integral time T is expressed as T₁/2. Also,
`calculation of the speed v using the constant D is computed by the CPU 1 with the
`abovementioned output voltage value, and for the subject distance, Iℓ is converted
`into voltage at one time, then subjected to A/D conversion, imported into the CPU
`1, and digitally processed. Thus, in the present exemplary embodiment it is possible
`to easily obtain the speed v of the subject with little error using the value of the
`difference between the outputs of two integration means.
`
`IPR2021-00921
`Apple EX1005 Page 13
`
`

`

`
`
`JP H4-73631
`
`- 14 -
`
`Remote release operation of the camera according to the present exemplary
`
`embodiment using the distance measurement device 2' comprising the subject speed
`detection circuit will be described with reference to the flowchart in FIG. 12.
`
`First, when the mode switch 3 is pressed to set the remote release mode, the
`process routine in FIG. 12 is started. The measurement repeat count m is reset to 0
`(step S121). Then, the display pattern I is output by the display device (step S122).
`The photographer, who is the subject 10, makes a motion such as moving his or her
`hand toward the front, for example, in the direction of the camera when he or she
`wishes to carry out a release operation. At that time, the camera detects the motion
`speed v of the subject 10 using the speed detection circuit and imports the motion
`speed v into the CPU 1 (step S123). Next, the count m is incremented (step S124)
`and a determination is made as to whether the speed v is a value within
`predetermined speeds, i.e., v₁ < v < v₂. If the speed is outside this range, the process
`jumps to step S126, on the assumption that there is still no intent to carry out a release
`operation. If the subject moves and the speed thereof is within the range, the process
`moves to step S127.
`
`In step S127, the display pattern III is output, warning the photographer that
`exposure is imminent. The photographer then remains unmoving if he or she wishes
`to execute the release operation. The motion speed v of the subject 10 is then once
`again detected (step S128), and a determination is made as to whether the motion
`speed v is outside the predetermined range (step S129). For example, if the subject
`10 is not moving, the speed v will naturally be substantially 0, which is outside the
`above range, and thus the exposure process in step S130 is carried out. The routine
`is then terminated.
`
`If the speed v was within the predetermined range in step S129, or if the
`speed v was outside the predetermined range in step S125, the process jumps to step
`S126, on the assumption that there is no intent to carry out the release operation in
`either case. Then, in step S126, the repeat count m is checked. If the count m is over
`50, the routine is terminated, on the assumption that there is no intent to carry out
`the release operation. However, if the count m is not over 50, the process returns to
`step S122 to detect the speed again.
`
`Thus, as described above, during the remote release operation of the camera
`according to the present exemplary embodiment, if the photographer makes a motion
`such as moving his or her hand, etc., in conjunction with pattern I when he or she
`intends to carry out the release operation, the photographer is thus able to
`communicate that intent to the camera. To cancel the release operation just before
`exposure, it is also possible to transmit an exposure cancel instruction to the camera
`by moving a hand, etc., in response to output of the display pattern III. Additionally,
`
`5
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`35
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`IPR2021-00921
`Apple EX1005 Page 14
`
`

`

`
`
`JP H4-73631
`
`- 15 -
`
`in the case of the present exemplary embodiment also, the limit of the repeat count
`for measurement is 50. Any more repetitions than this would not preferable in terms
`of energy savings, and therefore it is possible to interrupt the remote release.
`
`Note that conventional remote control-equipped cameras are generally
`provided with display LEDs. Accordingly, by using those display LEDs for the
`display means of the present invention as well, the remote release device according
`to the present invention can also be incorporated into a conventional remote
`controlled camera.
`
`[Effects of the Invention]
`
`Thus, as described above, with the remote release device-equipped