JP2006186408A - Imaging apparatus - Google Patents

Imaging apparatus Download PDF

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JP2006186408A
JP2006186408A JP2004374498A JP2004374498A JP2006186408A JP 2006186408 A JP2006186408 A JP 2006186408A JP 2004374498 A JP2004374498 A JP 2004374498A JP 2004374498 A JP2004374498 A JP 2004374498A JP 2006186408 A JP2006186408 A JP 2006186408A
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power failure
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imaging
cpu
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JP4465261B2 (en
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Shohei Azuma
昇平 東
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Hitachi Kokusai Electric Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of quickly restarting imaging having been executed just before occurrence of a power failure by surely restoring a state of imaging operations just before the occurrence of the power failure when the power failure takes place and then supply of power is restored. <P>SOLUTION: The imaging apparatus 1 includes: a secondary power supply section 19 charged up by a power supply section 18; and an EEPROM 20. The secondary power supply section 19 is connected to a CPU 10, a RAM 11 and the EEPROM 20, and the secondary power supply section 19 continues supply of power for a prescribed time even when the supply of power from the power supply section 18 is stopped due to the power failure. When the CPU 10 energized in this way detects the power failure, the CPU 10 stores positional information of a motor-driven universal head 14 and a zoom attached lens part 16 stored in the RAM 11 to the EEPROM 20. When the CPU 10 detects restoration of the power failure, the CPU 10 reads the positional information stored in the EEPROM 20 and restores the operating state of the imaging apparatus to the operating state just before the power failure according to the read positional information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、例えば監視システムに用いられる撮像装置に係わり、特に操作器により雲台やズームの位置を制御可能な撮像装置に関する。   The present invention relates to an imaging apparatus used in a monitoring system, for example, and more particularly to an imaging apparatus capable of controlling the position of a pan head or zoom using an operating device.

監視システムにおいて、外部の操作器を用いて雲台等を制御して撮像範囲を変化させることが可能な電動雲台一体型の撮像装置が広く利用されている。このような撮像装置を利用すれば、オペレータは１台の撮像装置から所望の撮像範囲の監視映像を入手できる。また、頻繁に撮像する撮像範囲をプリセットポイントとして予め登録させておき、プリセットポイントが選択されるときに、予め登録された撮像範囲の動作状態にするようにした撮像装置が提案されている（例えば、特許文献１を参照。）。
特開２００４−２３４４３公報 In a monitoring system, an electric pan head integrated imaging apparatus that can change an imaging range by controlling a pan head or the like using an external operation device is widely used. If such an imaging device is used, the operator can obtain a monitoring image of a desired imaging range from one imaging device. In addition, an imaging apparatus has been proposed in which an imaging range for frequent imaging is registered in advance as a preset point, and when the preset point is selected, an operation state of the imaging range registered in advance is set (for example, , See Patent Document 1).
Japanese Patent Laid-Open No. 2004-23443

ところが、一般にこの種の撮像装置では、撮像中に停電が発生した場合、電源供給復旧時には、初期化された動作状態で起動する。すなわち、オペレータが監視のために撮像範囲を調整していた停電直前の動作状態には戻らない。このため、オペレータは、瞬時の停電が発生した場合でも、電源供給復旧時に初期化された動作状態から停電直前の動作状態に調整する手間と時間を要する。また、プリセットポイントは、予め登録された位置にしか戻らないため、停電直前の動作状態には手操作で調整する必要がある。   However, in general, in this type of imaging apparatus, when a power failure occurs during imaging, the apparatus is started in an initialized operation state when power supply is restored. That is, it does not return to the operation state immediately before the power failure in which the operator has adjusted the imaging range for monitoring. For this reason, even if an instantaneous power failure occurs, the operator needs time and effort to adjust from the operation state initialized when power supply is restored to the operation state immediately before the power failure. In addition, since the preset point only returns to a previously registered position, it is necessary to manually adjust the operation state immediately before the power failure.

この発明は上記事情に着目してなされたものであり、その目的とするところは、停電が発生して電源供給が復旧したときに、停電直前の撮像動作状態を確実に復旧させることにより、迅速に停電直前の撮像を再開可能とする撮像装置を提供することにある。   The present invention has been made paying attention to the above circumstances, and the purpose of this invention is to quickly restore the imaging operation state immediately before the power failure when the power failure occurs and the power supply is restored. It is another object of the present invention to provide an imaging apparatus that can resume imaging immediately before a power failure.

上記目的を達成するためにこの発明の撮像装置は、電源部から供給される電力により動作し、撮像範囲を含む撮像動作状態を可変して対象物を撮像する撮像装置において、上記電源部の停電及びその復旧を検出する手段を有する。この検出手段により停電が検出された場合に、当該停電が検出される直前の上記撮像動作状態を表す情報をメモリに記憶させる。そして、上記検出手段により電源部の復旧が検出された場合に、上記メモリに記憶された撮像動作状態を表す情報に基づいて、撮像動作状態を上記停電が検出される直前の状態に復旧させるようにしたものである。   In order to achieve the above object, an imaging apparatus according to the present invention operates with power supplied from a power supply unit, and changes the imaging operation state including an imaging range to image a target. And means for detecting the recovery. When a power failure is detected by the detection means, information representing the imaging operation state immediately before the power failure is detected is stored in the memory. When the recovery of the power supply unit is detected by the detection means, the imaging operation state is restored to the state immediately before the power failure is detected based on the information indicating the imaging operation state stored in the memory. It is a thing.

このように構成することにより、予期せぬ停電が発生した場合であっても、電源供給復旧時には、確実に停電直前の動作状態に復旧する。これにより、従来の撮像装置のように、電源供給復旧時に初期化された動作状態から停電直前の動作状態に調整する手間と時間を省くことができる。このため、オペレータは、停電前に行っていた監視動作を迅速に再開することが可能となる。   With this configuration, even when an unexpected power failure occurs, when the power supply is restored, the operation state immediately before the power failure is surely restored. As a result, it is possible to save time and effort for adjusting from the operation state initialized at the time of power supply restoration to the operation state immediately before the power failure, as in the conventional imaging device. For this reason, the operator can quickly restart the monitoring operation performed before the power failure.

また、この発明は次のような構成を備えることも特徴とする。
上記メモリが、繰り返し書き込み回数が有限の不揮発性メモリにより構成される場合に、上記電源部は、停電後に電力供給を一定時間保持する蓄電手段を備える。そして、上記検出手段により一定時間以上の停電が検出された場合にのみ、当該停電が検出される直前の上記撮像動作状態を表す情報を上記不揮発性メモリに記憶するようにする。これにより、不揮発性メモリへの書き込み回数を抑えることができるため、より長期間に亘って不揮発性メモリを使用することが可能となる。 The present invention is also characterized by having the following configuration.
When the memory is composed of a non-volatile memory with a finite number of repeated writes, the power supply unit includes power storage means for holding power supply for a certain time after a power failure. Only when the power failure is detected by the detection means for a certain time or longer, information indicating the imaging operation state immediately before the power failure is detected is stored in the nonvolatile memory. Thereby, since the number of times of writing to the nonvolatile memory can be suppressed, the nonvolatile memory can be used for a longer period of time.

要するにこの発明は、停電が発生して電源供給が復旧したときに、停電直前の撮像動作状態を確実に復旧させることにより、迅速に停電直前の撮像を再開可能とする撮像装置を提供することである。   In short, the present invention provides an imaging device that can quickly resume imaging immediately before a power failure by reliably restoring the imaging operation state immediately before the power failure when a power failure occurs and the power supply is restored. is there.

図１は、この発明の一実施形態に係わる撮像装置を用いた監視システムの概略構成図である。このシステムは、撮像装置１、操作器２および表示装置３を備える。撮像装置１は、監視対象を撮像可能な場所に設置され、例えば、パン・チルト動作を行う電動雲台と一体化された雲台一体型カメラで構成される。操作器２及び表示装置３は、オペレータが監視を行う監視室などに設けられ、撮像装置１とそれぞれケーブルを介して接続されている。オペレータは、撮像装置１による撮像画像をテレビジョンモニタ等の表示装置３で確認しながら、操作器２に備えられた各種ボタンを操作することにより撮像装置１の撮像位置を制御して監視を行う。   FIG. 1 is a schematic configuration diagram of a monitoring system using an imaging apparatus according to an embodiment of the present invention. This system includes an imaging device 1, an operation device 2, and a display device 3. The imaging apparatus 1 is installed in a place where a monitoring target can be imaged, and is configured by, for example, a camera platform integrated camera integrated with an electric camera platform that performs pan / tilt operations. The operation device 2 and the display device 3 are provided in a monitoring room or the like that is monitored by an operator, and are connected to the imaging device 1 via cables. The operator controls and monitors the imaging position of the imaging device 1 by operating various buttons provided on the operation device 2 while confirming the captured image by the imaging device 1 on the display device 3 such as a television monitor. .

図２は、撮像装置１の機能構成を示すブロック図である。この撮像装置１は、主制御部としてマイクロプロセッサなどの中央処理ユニット（ＣＰＵ：Central Processing Unit）１０を備える。このＣＰＵ１０に、ＲＡＭ１１、雲台制御部１２およびレンズ制御部１３がそれぞれ接続され、さらに電圧検出部１７、二次電源部１９およびＥＥＰＲＯＭ２０、が接続されている。   FIG. 2 is a block diagram illustrating a functional configuration of the imaging apparatus 1. The imaging apparatus 1 includes a central processing unit (CPU) 10 such as a microprocessor as a main control unit. A RAM 11, a pan head control unit 12 and a lens control unit 13 are connected to the CPU 10, and a voltage detection unit 17, a secondary power supply unit 19 and an EEPROM 20 are further connected.

雲台制御部１２は、ＣＰＵ１０制御の下、操作器２から入力される制御信号に基づいて電動雲台部１４を制御する。この制御により、電動雲台部１４に備えられたカメラ部１５のパン・チルト動作が行われる。レンズ制御部１３は、操作器２からの制御信号にしたがってカメラ部１５に設けられたズーム付きレンズ部１６のズーム位置を制御する。なお、電動雲台部１４およびレンズ制御部１３の動作情報は、ＣＰＵ１０制御の下、常時ＲＡＭ１１に記憶される。また、カメラ部１５により撮像された画像データは、映像信号に変換されたのち、ケーブルを介して表示装置３に出力される。   The pan head control unit 12 controls the electric pan head unit 14 based on a control signal input from the operation device 2 under the control of the CPU 10. By this control, the pan / tilt operation of the camera unit 15 provided in the electric head unit 14 is performed. The lens control unit 13 controls the zoom position of the zoomed lens unit 16 provided in the camera unit 15 in accordance with a control signal from the operation device 2. The operation information of the electric camera platform 14 and the lens control unit 13 is always stored in the RAM 11 under the control of the CPU 10. The image data captured by the camera unit 15 is converted into a video signal, and then output to the display device 3 via a cable.

一方、ＥＥＰＲＯＭ２０は、不揮発性メモリにより構成され、停電発生直前の動作状態を記憶するために用いられる。電源部１８は、商用電源出力をもとに各部に電源を供給する。電圧検出部１７は、ＣＰＵ１０制御の下、電源部１８による電源供給の有無を検出する。二次電源部１９には、例えば電気二重層コンデンサが用いられ、上記電源部１８からの電源供給により常時蓄電されている。電源部１８からの電源供給が停止した場合には、この蓄電された二次電源部１９によって、ＣＰＵ１０、ＲＡＭ１１およびＥＥＰＲＯＭ２０に対して電源の供給が行われる。   On the other hand, the EEPROM 20 is composed of a non-volatile memory and is used for storing an operation state immediately before the occurrence of a power failure. The power supply unit 18 supplies power to each unit based on the commercial power output. The voltage detection unit 17 detects the presence or absence of power supply by the power supply unit 18 under the control of the CPU 10. For example, an electric double layer capacitor is used for the secondary power supply unit 19, and is always charged by power supply from the power supply unit 18. When power supply from the power supply unit 18 is stopped, the stored secondary power supply unit 19 supplies power to the CPU 10, RAM 11, and EEPROM 20.

次に、以上のように構成された撮像装置１の動作について説明する。図３は、停電発生時における位置情報記憶処理の手順とその内容を示すフローチャート、図４は、停電復旧時における動作状態復旧処理の手順とその内容を示すフローチャートである。
ステップＳ３ａにおいて、撮像装置１のＣＰＵ１０は、電圧検出部１７により電源部１８からＣＰＵ１０に供給される電圧値を検出する。ステップＳ３ｂにおいて検出された電圧値により停電が発生したか否かを判定する。この判定により、停電が発生したと判定された場合は、ステップＳ３ｃに移行し、ＲＡＭ１１に記憶された雲台制御部１２およびレンズ制御部１３の位置情報をそれぞれ読み出し、読み出された位置情報をＥＥＰＲＯＭ２０に記憶する。一方、ステップＳ３ｂにより、停電が検知されない場合は、ステップＳ３ａに移行し、電圧値の検出処理を一定の時間間隔で行う。 Next, the operation of the imaging device 1 configured as described above will be described. FIG. 3 is a flowchart showing the procedure and contents of the location information storage process when a power failure occurs, and FIG. 4 is a flowchart showing the procedure and contents of the operation state restoration process when the power failure is restored.
In step S <b> 3 a, the CPU 10 of the imaging device 1 detects the voltage value supplied from the power supply unit 18 to the CPU 10 by the voltage detection unit 17. It is determined whether or not a power failure has occurred based on the voltage value detected in step S3b. If it is determined by this determination that a power failure has occurred, the process proceeds to step S3c, where the position information of the pan head control unit 12 and the lens control unit 13 stored in the RAM 11 is read, and the read position information is read out. Stored in the EEPROM 20. On the other hand, if a power failure is not detected in step S3b, the process proceeds to step S3a, and the voltage value detection process is performed at regular time intervals.

上述したように停電発生時には、電源部１８からの電源供給は停止するが、二次電源部１９からの給電によりＣＰＵ１０、ＲＡＭ１１およびＥＥＰＲＯＭ２０に対して一定時間は電源供給がなされるため、ステップＳ３ｃの記憶処理が実行できる。なお、ステップＳ３ｂの判定における停電は、一定時間以上の停電とし、瞬断のように短時間の停電であれば、二次電源部１９からの給電によりＲＡＭ１１に位置情報は保持されるため、ＥＥＰＲＯＭ２０への記憶処理は行わない。   As described above, when a power failure occurs, the power supply from the power supply unit 18 stops, but the power supply from the secondary power supply unit 19 supplies power to the CPU 10, RAM 11 and EEPROM 20 for a certain period of time. Storage processing can be executed. Note that the power outage in the determination in step S3b is a power outage of a certain time or more, and if the power outage is short, such as a momentary interruption, the position information is retained in the RAM 11 by the power supply from the secondary power supply unit 19, and therefore the EEPROM 20 The storage process is not performed.

そして、停電が復旧し、撮像装置１のＣＰＵ１０は、ステップＳ４ａにより、電圧検出部１７により電源部１８からの電源供給を検知する。そうすると、ステップＳ４ｂにおいて、電動雲台制御部１２およびレンズ制御部１３により初期化および動作確認を行う。これにより、電動雲台制御部１２はパン・チルト動作、レンズ制御部１３においてはズーム動作の動作範囲を確認したのち、それぞれ原点位置に戻る。   Then, the power failure is restored, and the CPU 10 of the imaging device 1 detects the power supply from the power supply unit 18 by the voltage detection unit 17 in step S4a. Then, in step S4b, the electric head control unit 12 and the lens control unit 13 perform initialization and operation check. As a result, the electric pan head control unit 12 confirms the pan / tilt operation and the lens control unit 13 confirms the operation range of the zoom operation, and then returns to the origin position.

次に、ステップＳ４ｃにおいて、ＥＥＰＲＯＭ２０にアクセスして位置情報の書き込みがあるか否かを確認して、以前に停電が発生したか否かを判定する。ＥＥＰＲＯＭ２０に位置情報の書き込みがあり、停電があったと判定された場合は、ステップＳ４ｄに移行し、ＥＥＰＲＯＭ２０に記憶された停電発生直前の位置情報を読み出す。そして、ステップＳ４ｅにおいて、ＣＰＵ１０は、上記読み出された位置情報に従って、電動雲台部１４及びズーム付レンズ部１６の制御を行う。一方、ステップＳ４ｃの判定により、停電は無く、通常に起動された判定された場合は、ステップＳ４ｂでなされた原点位置の状態で起動する。   Next, in step S4c, the EEPROM 20 is accessed to check whether or not position information is written, and it is determined whether or not a power failure has occurred before. If it is determined that there has been a power failure in the EEPROM 20 and a power failure has occurred, the process proceeds to step S4d, and the location information immediately before the occurrence of the power failure stored in the EEPROM 20 is read. In step S4e, the CPU 10 controls the electric pan head unit 14 and the zoomed lens unit 16 according to the read position information. On the other hand, if it is determined in step S4c that there is no power failure and it is normally activated, the apparatus is activated in the state of the origin position made in step S4b.

以上のようにこの実施形態では、撮像装置１は、電源部１８により蓄電される二次電源部１９とＥＥＰＲＯＭ２０を備える。この二次電源部１９は、ＣＰＵ１０、ＲＡＭ１１およびＥＥＰＲＯＭ２０に接続され、停電により電源部１８からの給電が停止した場合でも一定時間は給電が続けられる。これにより、ＣＰＵ１０は停電を検出すると、ＲＡＭ１１に記憶された電動雲台部１４およびズーム付レンズ部１６の位置情報をＥＥＰＲＯＭ２０に記憶する。そして、ＣＰＵ１０は停電の復旧を検知すると、上記ＥＥＰＲＯＭ２０に記憶された位置情報を読み出して、この読み出された位置情報にしたがって停電直前の動作状態に復旧するようにしたものである。   As described above, in this embodiment, the imaging apparatus 1 includes the secondary power supply unit 19 that is charged by the power supply unit 18 and the EEPROM 20. The secondary power supply unit 19 is connected to the CPU 10, RAM 11 and EEPROM 20, and power supply is continued for a certain time even when power supply from the power supply unit 18 is stopped due to a power failure. Thus, when the CPU 10 detects a power failure, the CPU 10 stores the position information of the electric camera platform 14 and the zoomed lens unit 16 stored in the RAM 11 in the EEPROM 20. Then, when detecting the recovery from the power failure, the CPU 10 reads the position information stored in the EEPROM 20 and restores the operation state immediately before the power failure according to the read position information.

したがってこの実施形態によれば、予期せぬ停電が発生した場合であっても、電源供給復旧時には、確実に停電直前の動作状態に復旧する。これにより、従来の撮像装置のように、電源供給復旧時に初期化された動作状態から停電前の動作状態に調整する手間と時間を省くことができる。このため、オペレータは、停電前に行っていた監視を迅速に再開することが可能となる。   Therefore, according to this embodiment, even when an unexpected power failure occurs, when the power supply is restored, the operation state immediately before the power failure is surely restored. Thereby, it is possible to save labor and time for adjusting the operation state initialized at the time of power supply restoration to the operation state before the power failure as in the conventional imaging apparatus. For this reason, the operator can quickly resume the monitoring performed before the power failure.

また、ＥＥＰＲＯＭ２０には書き込み回数に制限があるが、瞬断などの短時間の停電を除く一定時間以上の停電発生時にのみＥＥＰＲＯＭ２０への書き込み処理を行うため、より長期間の利用が可能となる。   Although the number of times of writing is limited in the EEPROM 20, the writing process to the EEPROM 20 is performed only when a power failure occurs for a certain time or more excluding a short-time power failure such as a momentary interruption, so that it can be used for a longer period of time.

上記メモリが、繰り返し書き込み回数が有限の不揮発性メモリにより構成される場合に、上記電源部は、停電後に電力供給を一定時間保持する蓄電手段を備える。そして、上記検出手段により一定時間以上の停電が検出された場合にのみ、当該停電が検出される直前の上記撮像動作状態を表す情報を上記不揮発性メモリに記憶するようにする。   When the memory is composed of a non-volatile memory with a finite number of repeated writes, the power supply unit includes power storage means for holding power supply for a certain time after a power failure. Only when the power failure is detected by the detection means for a certain time or longer, information indicating the imaging operation state immediately before the power failure is detected is stored in the nonvolatile memory.

このため、不揮発性メモリへの書き込み回数を抑えることができるため、より長期間に亘って不揮発性メモリを使用することが可能となり、コストアップを防止することができる。   For this reason, since the number of times of writing to the nonvolatile memory can be suppressed, the nonvolatile memory can be used for a longer period of time, and an increase in cost can be prevented.

なお、この発明は上記実施形態に限定されるものではない。例えば、上記実施形態では、停電発生時において、雲台雲台部１４およびズーム付レンズ部１６の位置情報をＥＥＰＲＯＭ２０に記憶するようにしたが、他にもカメラ部１５のホワイトバランスなどの各種設定を記憶するようにしてもよい。このようにすると、さらに停電直前の撮像動作状態をもれなく復旧することができる。   The present invention is not limited to the above embodiment. For example, in the above embodiment, the position information of the pan head unit 14 and the zoomed lens unit 16 is stored in the EEPROM 20 when a power failure occurs, but various other settings such as the white balance of the camera unit 15 are also possible. May be stored. In this way, it is possible to further restore the imaging operation state immediately before the power failure.

上記実施形態では、停電直前の位置情報をＥＥＰＲＯＭ２０に記憶するように構成したが、他にもハードディスク等を利用してもよい。また、二次電源部１９は、乾電池やボタン電池などの一次電池、或いは充電可能な二次電池を利用することも可能である。これらを利用する場合は、電気二重層コンデンサと比較すると電池容量が大きいため、停電直前の位置情報を揮発性メモリに記憶するように構成してもよい。その他、撮像装置１の構成や停電発生時における位置情報記憶処理および停電復旧時における動作状態復旧処理の手順とその内容についても、この発明の要旨を逸脱しない範囲で種々変形して実施できる。   In the above embodiment, the position information immediately before the power failure is stored in the EEPROM 20, but a hard disk or the like may be used. Moreover, the secondary power supply unit 19 can use a primary battery such as a dry battery or a button battery, or a rechargeable secondary battery. When these are used, since the battery capacity is larger than that of the electric double layer capacitor, the position information immediately before the power failure may be stored in the volatile memory. In addition, the configuration of the imaging apparatus 1, the position information storage process at the time of a power failure, and the procedure and contents of the operation state recovery process at the time of power failure recovery can be variously modified without departing from the gist of the present invention.

要するにこの発明は、上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより種々の発明を形成できる。例えば、実施形態に示される全構成要素のうち幾つかの構成要素を削除してもよい。さらに異なる実施形態に亘る構成要素を適宜組み合わせてもよい。   In short, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, you may delete some components among all the components shown by embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

この発明の一実施形態に係わる撮像装置を用いた監視システムの概略構成図。1 is a schematic configuration diagram of a monitoring system using an imaging apparatus according to an embodiment of the present invention. 図１に示す撮像装置の機能構成を示すブロック図。FIG. 2 is a block diagram illustrating a functional configuration of the imaging apparatus illustrated in FIG. 1. 図２に示す撮像装置の停電発生時における位置情報記憶処理の手順とその内容を示すフローチャート。The flowchart which shows the procedure of the positional information storage process at the time of the power failure generation of the imaging device shown in FIG. 2, and its content. 図２に示す撮像装置の停電復旧時における動作状態復旧処理の手順とその内容を示すフローチャート。The flowchart which shows the procedure of the operation state restoration process at the time of a power failure restoration of the imaging device shown in FIG. 2, and its content.

符号の説明Explanation of symbols

１…雲台一体型撮像装置、２…操作器、３…表示装置、１０…ＣＰＵ、１１…ＲＡＭ、１２…雲台制御部、１３…レンズ制御部、１４…電動雲台部、１５…カメラ部、１６…ズームレンズ部、１７…電圧検出部、１８…電源部、１９…二次電源部、２０…ＥＥＰＲＯＭ。 DESCRIPTION OF SYMBOLS 1 ... Pan head integrated imaging device, 2 ... Operation device, 3 ... Display apparatus, 10 ... CPU, 11 ... RAM, 12 ... Pan head control part, 13 ... Lens control part, 14 ... Electric pan head part, 15 ... Camera 16 is a zoom lens unit, 17 is a voltage detection unit, 18 is a power supply unit, 19 is a secondary power supply unit, and 20 is an EEPROM.

Claims (2)

電源部から供給される電力により動作し、撮像範囲を含む撮像動作状態を可変して対象物を撮像する撮像装置において、
前記電源部の停電及びその復旧を検出する検出手段と、
前記検出手段により停電が検出された場合に、当該停電が検出される直前の前記撮像動作状態を表す情報をメモリに記憶する記憶制御手段と、
前記検出手段により電源部の復旧が検出された場合に、前記メモリに記憶された撮像動作状態を表す情報に基づいて、撮像動作状態を前記停電が検出される直前の状態に復旧させる復旧制御手段と
を具備することを特徴とする撮像装置。 In an imaging apparatus that operates with power supplied from a power supply unit and images an object by changing an imaging operation state including an imaging range,
Detecting means for detecting a power failure and recovery of the power supply unit;
Storage control means for storing, in a memory, information representing the imaging operation state immediately before the power failure is detected when a power failure is detected by the detection means;
When the recovery of the power supply unit is detected by the detection unit, the recovery control unit restores the imaging operation state to the state immediately before the power failure is detected based on the information indicating the imaging operation state stored in the memory. An imaging apparatus comprising: 前記メモリが、繰り返し書き込み回数が有限の不揮発性メモリにより構成される場合に、
前記電源部は、停電後に電力供給を一定時間保持する蓄電手段を備え、
前記記憶制御手段は、前記検出手段により一定時間以上の停電が検出された場合に、当該停電が検出される直前の前記撮像動作状態を表す情報を前記不揮発性メモリに記憶することを特徴とする撮像装置。 When the memory is composed of a nonvolatile memory with a finite number of repeated writes,
The power supply unit includes power storage means for holding power supply for a certain time after a power failure,
The storage control unit stores, in the nonvolatile memory, information indicating the imaging operation state immediately before the power failure is detected when the power failure for a predetermined time or more is detected by the detection unit. Imaging device.
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JP2019036861A (en) * 2017-08-17 2019-03-07 ソニー株式会社 Information processing apparatus, information processing method, and program

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019036861A (en) * 2017-08-17 2019-03-07 ソニー株式会社 Information processing apparatus, information processing method, and program
JP7139584B2 (en) 2017-08-17 2022-09-21 ソニーグループ株式会社 Information processing device, information processing method, program, and information processing system
US11689797B2 (en) 2017-08-17 2023-06-27 Sony Group Corporation Camera, method, non-transitory computer-readable medium, and system

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