CN102027411A - Camera system - Google Patents
Camera system Download PDFInfo
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- CN102027411A CN102027411A CN200980117679XA CN200980117679A CN102027411A CN 102027411 A CN102027411 A CN 102027411A CN 200980117679X A CN200980117679X A CN 200980117679XA CN 200980117679 A CN200980117679 A CN 200980117679A CN 102027411 A CN102027411 A CN 102027411A
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Abstract
A camera body is provided with a synchronization signal generating means for generating a synchronization signal, and a body controlling means for controlling the camera body and generating a command for controlling an interchangeable lens. The body controlling means performs control so as to transmit a command for setting the interchangeable lens to a synchronous mode in which the operation of the interchangeable lens is controlled in synchronization with the synchronization signal and a command for setting the interchangeable lens to an asynchronous mode other than the synchronous mode to the interchangeable lens. The interchangeable lens is provided with a lens controlling means for controlling the operation of the interchangeable lens. The lens controlling means controls the operation of the interchangeable lens in the synchronous mode or the asynchronous mode according to the command received from the camera body.
Description
Technical field
The present invention relates to a kind of camera arrangement, particularly a kind of camera arrangement that constitutes by exchange camera lens and camera body.
Background technology
Patent documentation 1:JP spy opens the 2007-322922 communique
As mentioned above, make under the situation synchronous between camera body and exchange camera lens the driving of control exchange camera lens.But camera body and the performed separately processing of exchange camera lens may not obtain under the synchronous situation between camera body and exchange camera lens and implement.For need not synchronous processing, be not implement synchronously to implement processing in separately can obtain better treatment effeciency on the contrary at camera body or exchange camera lens.
Summary of the invention
The present invention makes at the problems referred to above just, and its purpose is to provide a kind of camera arrangement, can be only carries out synchro control in the time must implementing camera body and exchange synchronous between camera lens.
The 1st mode of the present invention provides a kind of camera arrangement, is made of camera body and exchange camera lens.Camera body possesses: the synchronizing signal that generates synchronizing signal generates mechanism; The control camera body, and generate the fuselage control gear that is used to control the order that exchanges camera lens; And, the transmitting mechanism of transmission synchronizing signal and order.The fuselage control gear is controlled, transmission is used for the exchange camera lens being set at the order of synchronous mode and being used for exchanging the order that camera lens is set at synchronous mode Asynchronous Mode in addition to the exchange camera lens, synchronously controls the action of exchange camera lens in the synchronous mode with synchronizing signal.The exchange camera lens possesses: receive from the synchronizing signal of camera body transmission and the receiving mechanism of order; The camera lens control gear of the action of control exchange camera lens.The camera lens control gear is according to the order that receives from camera body, with the action of synchronous mode or Asynchronous Mode control exchange camera lens.
By above structure, can be regularly to exchange the switching of the synchronous mode/Asynchronous Mode of camera lens arbitrarily, only when needing camera body and exchanging synchronous between camera lens, carry out synchro control.Therefore, during Asynchronous Mode, controller of camera can be absorbed in the control of camera body, and in addition, lens controller need not be in order to obtain the restriction that is subjected to surpassing necessity with the synchronous of camera body.
In the 2nd mode, provide a kind of camera body, the exchange camera lens can be installed.Camera body has: the synchronizing signal that generates synchronizing signal generates mechanism; The control camera body, and generate the fuselage control gear that is used to control the order that exchanges camera lens; And, the transmitting mechanism of transmission synchronizing signal and order.The fuselage control gear is controlled, transmission is used for the exchange camera lens being set at the order of synchronous mode and being used for synchronously controlling the action of described exchange camera lens in the synchronous mode with synchronizing signal with exchanging the order that camera lens is set at synchronous mode Asynchronous Mode in addition to the exchange camera lens.
In the 3rd mode, provide a kind of exchange camera lens, can be installed on camera body.The exchange camera lens has: receive from the synchronizing signal of camera body transmission and the receiving mechanism of order; And, to the camera lens control gear controlled of action of exchange camera lens.The camera lens control gear is according to the order that receives from camera body, with the action of synchronous mode or Asynchronous Mode control exchange camera lens.
Structure by the way, can provide a kind of can be regularly to switch the synchronous mode/Asynchronous Mode of exchange camera lens arbitrarily, only in the time must obtaining camera body and exchange synchronous between camera lens, carry out the camera arrangement of synchro control.
Description of drawings
Fig. 1 is the block diagram of the camera arrangement in the embodiment 1,2.
Fig. 2 is the synchronous mode of explanation in the embodiment 1 and the figure of the switching sequence of Asynchronous Mode.
Fig. 3 is the process flow diagram of the change action of synchronous mode and Asynchronous Mode.
Fig. 4 is the synchronous mode of explanation in the embodiment 2 and the figure of the switching sequence of Asynchronous Mode.
Fig. 5 is the figure of the problem points of explanation when switching from synchronous mode toward Asynchronous Mode.
The figure of the switching of the control cycle when Fig. 6 is the switching from synchronous mode toward Asynchronous Mode that illustrates in the embodiment 2.
Embodiment
Below, with reference to accompanying drawing to preferred embodiment describing.
1. structure
1-1. summary
Fig. 1 is the block diagram of the structure of the camera arrangement in expression the 1st embodiment.Camera arrangement 1 is by camera body 100 with can the exchange camera lens 200 of its dismounting be constituted.Camera arrangement 1 can be implemented the focusing action of contrast mode according to the view data that is generated by ccd image sensor 110.
1-2. the structure of camera body
Camera body 100 has ccd image sensor 110, LCD monitor 120, controller of camera 140, fuselage bayonet socket 150, power supply 160 and draw-in groove 170.
Controller of camera 140, by the indication of basis from the functional unit of shutter release button 130 grades, the inscape of control ccd image sensor 110 grades is controlled the action of camera arrangement 1 integral body.Controller of camera 140 sends to timing generator 112 with vertical synchronizing signal.Parallel therewith, controller of camera 140 generates the exposure synchronizing signal.Controller of camera 140 through fuselage bayonet socket 150 and camera lens bayonet socket 250, sends to lens controller 240 with the exposure synchronizing signal that generates periodically.Controller of camera 140 when carrying out the action of control action or Flame Image Process, uses DRAM141 as working storage.
Ccd image sensor 110 to taking through the shot object image of exchange camera lens 200 incidents, generates view data.The view data that is generated is by 111 digitizings of AD transducer.By AD transducer 111 digitized view data, implement the Flame Image Process of regulation by controller of camera 140.The Flame Image Process of so-called regulation is meant that for example gamma correction processing, white-balance correction processing, flaw correcting process, YC conversion process, electronic zoom are handled, JPEG compresses processing.
Ccd image sensor 110 is being moved by the timing of timing generator 112 controls.As the action of ccd image sensor 110, the shooting action of rest image, the shooting action of viewfinder image etc. are arranged.Viewfinder image mainly is a dynamic image, in order to allow the user determine to be used for the finding a view of shooting of rest image and be presented at LCD monitor 120.
LCD monitor 120 demonstrates the represented image of display image data of having been implemented Flame Image Process by controller of camera 140.LCD monitor 120 can optionally show dynamic image or rest image.
Draw-in groove 170 can be installed storage card 171, according to the control from controller of camera 140, storage card 171 is controlled.Storage card 171 can be deposited the view data that Flame Image Process generated by controller of camera 140.For example, storage card 171 can be deposited jpeg image file.In addition, view data of depositing in the storage card 171 or image file can be read, and from view data or the image file that storage card 171 is read, implement Flame Image Process by controller of camera 140.For example, controller of camera 140 will decompress from view data or the image file that storage card 171 is obtained, and generates display image data.
Power supply 160 is supplied with the electric power that is used for camera arrangement 1 consumption.Power supply 160 for example is a dry cell, also can be rechargeable battery.In addition, power supply 160, also can be by power lead from the outside to the camera arrangement supply capability.
Fuselage bayonet socket 150 can mechanically and on electric be connected with the camera lens bayonet socket 250 of exchange camera lens 200.Fuselage bayonet socket 150, through camera lens bayonet socket 250, can and exchange data are sent reception between the camera lens 200.Fuselage bayonet socket 150, the exposure synchronizing signal with slave body controller 140 receives sends to lens controller 240 through camera lens bayonet socket 205.In addition, other control signals that will receive from controller of camera 140 send to lens controller 240 through camera lens bayonet socket 250.For example, will send to lens controller 240 through camera lens bayonet socket 250 from the relevant information of controller of camera 140 drivings that receive and condenser lens 230.In addition, fuselage bayonet socket 150 will send to controller of camera 140 through the signal that camera lens bayonet socket 250 receives from lens controller 240.In addition, fuselage bayonet socket 150, the electric power that will receive from power supply 160 offers exchange camera lens 200 integral body through camera lens bayonet socket 250.
1-3. the structure of exchange camera lens
Exchange camera lens 200 has optical system, lens controller 240 and camera lens bayonet socket 250.Optical system comprises zoom lens 210, OIS lens 220, aperture 260, condenser lens 230.
Zoom lens 210 are the lens that are used to change the multiplying power of the shot object image that optical system forms.Zoom lens 210 are made of the lens of 1 or multi-disc.Driving mechanism 211 comprises zoom ring that the user can operate etc., and the operation that the user is made passes to zoom lens 210, and the optical axis direction of zoom lens 210 along optical system moved.Detecting device 212 detects the drive amount in the driving mechanism 212.Lens controller 240 by obtaining the testing result in this detecting device 212, can be grasped the zoom ratio in the optical system.
OIS lens 220 are the fuzzy lens revised to the shot object image that is formed by the optical system that exchanges camera lens 200.OIS lens 220 move by the direction toward the shake of offsetting camera arrangement 1, reduce shot object image fuzzy on the ccd image sensor 110.OIS lens 220 are made of 1 or multi-disc lens.Actuator 221 is accepted the control with IC223 from OIS, drives OIS lens 220 in the face vertical with the optical axis of optical system.Actuator 221 for example, can be realized by magnet and plate coil.Position-detection sensor 222 is sensors that the position of the OIS lens 220 in the face vertical with the optical axis of optical system is detected.Position-detection sensor 222 for example, can be realized by magnet and Hall element.OIS IC223 according to the testing result of the jitter detector of the testing result of position-detection sensor 222 and gyro sensor etc., controls actuator 221.OIS IC223 obtains the testing result of jitter detector from lens controller 240.In addition, OIS IC223 sends the signal that the expression optical image blurs the state of correcting process to lens controller 240.
Aperture 260 is the parts that are used to adjust the amount of the light by optical system.Aperture 260 for example is made of a plurality of aperture blades, can light quantity be adjusted by the peristome that is made of blade is opened and closed.Aperture motor 261 is to be used for the driving mechanism that the peristome to aperture 260 opens and closes.
Condenser lens 230 is the lens that are used to change the focus state of the shot object image that is formed by optical system on ccd image sensor 110.Condenser lens 230 is made of the lens of 1 or multi-disc.
Focus on motor 223, drive, make the optical axis advance and retreat of condenser lens 230 along optical system according to the control of lens controller 240.Thus, can change the focus state of the shot object image that on ccd image sensor 110, forms through optical system.In the present embodiment,, can use stepper motor as focusing on motor 223.But, motor is not limited thereto, and also can pass through realizations such as DC motor, servomotor, supersonic motor.
Lens controller 240 is according to the control signal from controller of camera 140, by OIS is controlled exchange camera lens 200 integral body with IC223 and focusing motor 233 grades.For example, lens controller 240 is controlled focusing on motor 223 according to the control signal from controller of camera 140, makes condenser lens 230 along the driving method advance and retreat of optical axis with regulation.In addition, lens controller 240 can carry out controlling with the vibration from the synchronous condenser lens 230 of the exposure synchronizing signal of controller of camera 140.Here, the vibration of so-called condenser lens 230 control is meant condenser lens 230 small advance and retreat on optical axis are driven.These small advance and retreat drive, and carry out with the cycle of regulation.By making condenser lens 230 vibration actions, can focus continuously to subject.In addition, lens controller 240 with received signals such as IC223, sends to controller of camera 140 from detecting device 212, OIS.Data transmit-receive between lens controller 240 and the controller of camera 140 carries out through camera lens bayonet socket 250 and fuselage bayonet socket 150.
Lens controller 240 when controlling, uses DRAM241 as working storage.In addition, flash memory 242, program and the parameter used during to the control of lens controller 240 are preserved.
Controller of camera 140 is examples that synchronizing signal generates mechanism.Fuselage bayonet socket 150 is examples of transmitting mechanism.Controller of camera 140 is examples of fuselage control gear.Camera lens bayonet socket 250 is examples of receiving mechanism.Lens controller 240 is examples of camera lens control gear.Ccd image sensor 110 is examples of photographic unit.2. action
Action to the camera arrangement that constitutes as mentioned above uses Fig. 2～4 to describe.
A 2-1. example of the action of camera arrangement
In the camera arrangement of present embodiment, exchange camera lens 200 has synchronous mode and Asynchronous Mode.Wherein, in the synchronous mode, move synchronously with the synchronizing signal that receives from camera body 100 (exposure synchronizing signal); In the Asynchronous Mode, move synchronously with the inner synchronizing signals that generate of exchange camera lens 200, but not the synchronizing signal that sends from camera body 100.In the synchronous mode, camera body 100 is to exchange camera lens 200 output synchronizing signals, and in the Asynchronous Mode, camera body 100 stops to exchange camera lens 200 output synchronizing signals.The switching of the synchronous mode/Asynchronous Mode of exchange camera lens 200 is controlled according to the state of a control in the camera body 100 by controller of camera 140.For example, exchange camera lens 200, when the viewfinder image display action, when dynamic image is taken by with synchronous mode control, when the starting of camera arrangement, during image regeneration, controlled with Asynchronous Mode when rest image is taken.
Use Fig. 2, the switching that exchanges the synchronous mode/Asynchronous Mode in the camera lens 200 is described.
At first, illustrate and be used to begin synchronous action.Camera body 100 will be used to set exchange camera lens 200 and send to exchange camera lens 200 (A1) for the synchronous initiation command of synchronous mode.Exchange camera lens 200 is accepted to carry out behind the synchronous initiation command and is begun to handle (A2) synchronously.In beginning synchronously to handle, comprise for driving frequency and be adjusted into the processing of notifying each handling part by the frequency of controller of camera 140 indications the exchange camera lens 200 of lens controller 240.In beginning synchronously to handle, comprise: the processing that the residue of notifying each handling part to finish need to drive when asynchronous is handled; Processing with the frequency of notifying the corresponding change of each handling part.Exchange camera lens 200, detect carried out this notice after, finish asynchronous regime (A3).Afterwards, exchange camera lens 200 enters the mode switch waiting status.This mode switch waiting status is used to allow each handling part of exchange camera lens 200, is used to finish to remain the processing of processing and is used for the processing of corresponding new frequency (frequency after changing).In addition, exchange camera lens 200 after finishing asynchronous regime, sends to camera body 100 (A4) with the initiation command response.Camera body 100, after accepting this initiation command response, the communication (A5) in the beginning synchronous mode.Specifically, camera body 100 will ask the order of the status information of exchange camera lens 200 to send to exchange camera lens 200 (A5), and the status information that exchange camera lens 200 will exchange camera lens 200 sends to camera body 100.In addition, camera body 100 sends to exchange camera lens 200 with the action setting command of indicating the control of carrying out in synchronous mode.Camera body 100 after the action setting command sends, sends synchronizing signal (A6).Exchange camera lens 200 begins synchronization action (A7) after the warp in the time delay of regulation.At this moment, exchange camera lens 200 is carried out the focusing of being indicated by the action setting command from camera body 100 and is driven (for example, vibration) (A8).
Then, illustrate and be used to finish synchronous action.Camera body 100, the synchronous the finish command that will be used to finish synchronous mode sends to exchange camera lens 200 (B1).Exchange camera lens 200 is accepted to carry out synchronous end process (B2) behind synchronous the finish command.Synchronously in the end process, comprise situation frequency and the processing that each handling part is notified preferably that is adjusted into exchange camera lens 200 for driving frequency with lens controller 240.For example, be 120Hz if establish the controlled frequency of the exchange camera lens 200 of lens controller 240 in advance, then in synchronous end process, comprise the processing of each handling part being notified for the driving frequency with lens controller 240 is adjusted into 120Hz.End process is to handle same action with above-mentioned beginning synchronously synchronously.Exchange camera lens 200, confirm the end of synchronous end process after, finish synchronous mode (B3).Exchange camera lens 200 sends to camera body 100 (B4) with the finish command response.Afterwards, exchange camera lens 200 enters the mode switch waiting status.In this mode switch waiting status, lens controller 240 is adjusted into driving frequency the situation frequency preferably of exchange camera lens 200.In addition, camera body 100 stops the output (B5) of synchronizing signal, and exchange camera lens 200 is transferred to Asynchronous Mode.
As mentioned above, by synchronous initiation command and synchronous the finish command, the synchronous mode/Asynchronous Mode between camera body 100 and the exchange camera lens 200 is switched.
In addition, the camera arrangement 1 in the present embodiment, in beginning processing and end process, just from camera body 100 indication to each processing of exchange camera lens 200 " notice ", the processing of reality was carried out in " mode switch stand-by period ".But, also not necessarily to take this structure.Also can be in beginning processing and end process, " notice " and " processing " of carrying out the indication of each processing is not provided with " mode switch stand-by period "
Fig. 3 is the process flow diagram of action example of the camera arrangement of the expression change action that relates to above-mentioned synchronous mode/Asynchronous Mode.With reference to the process flow diagram of Fig. 3, the controller of camera 140 in the change action of synchronous mode/Asynchronous Mode and the action of lens controller 240 are described.
Under the state of power supply for disconnection (OFF) of camera arrangement, operation by the user etc. switches to power connection (ON) (S11), initialization action (S12) in the controller of camera 140 beginning camera bodies 100 then, and to the aim of exchange camera lens 200 indication beginning initialization action (S13).
Lens controller 240 is accepted the indication from controller of camera 140, exchanges the initialization action (S14) in the camera lens 200.Though the initialization action in the exchange camera lens 200 comprise exercises, for example there is the initial point of the action that focuses on motor 233 to measure, program stored transferring in the DRAM241 etc. in the affirmation of the value of counter 243, flash memory 242.Lens controller 240 after the initialization action in exchange camera lens 200 finishes, is given controller of camera 140 (S15) with this advisory.
Controller of camera 140 finishes the initialization action of camera body 100, and after the initialization action end notification of acceptance from lens controller 240, is transferred to synchronous mode (S16) from Asynchronous Mode.Controller of camera 140 after being transferred to synchronous mode from Asynchronous Mode, is sent to lens controller 240 with synchronous initiation command.Lens controller 240, accept synchronous initiation command after, be transferred to synchronous mode from Asynchronous Mode, carry out control action (S16B) synchronously with the synchronizing signal that receives from controller of camera 140.For example, lens controller 240, synchronous with synchronizing signal, grasp the driving condition that focuses on motor 233 and aperture motor 261, its result is sent to controller of camera 140.
Afterwards, controller of camera 140 is transferred to generation, the display action (S17) of viewfinder image.Like this, after being transferred to synchronous mode, by generation and the display action that carries out viewfinder image, controller of camera 140 can correctly be grasped the positional information of condenser lens 230 and the f-number of aperture 260 etc. in predetermined timing.As a result, camera arrangement 1 can carry out AF control and AE controls with high precision more.In addition, the details of viewfinder image, display action is described below.
The viewfinder image that generates be presented at LCD monitor 120 during in, whether controller of camera 140 is monitored (S18) by half by operation to shutter release button 130.If door open button 130 is pressed operation by half, then controller of camera 140 carries out automatic focus action and automatic exposure control action (S19).After finishing these actions, monitor whether door open button 130 has full push (S20).
If shutter release button 130 is by full push, controller of camera 140 is transferred to Asynchronous Mode (S21) from synchronous mode.Controller of camera 140, be transferred to Asynchronous Mode from synchronous mode after, lens controller 240 is sent synchronous the finish command.Lens controller 240 after receiving synchronous the finish command, is transferred to Asynchronous Mode (S21B).
Afterwards, ccd image sensor 110 expose (S22).Controller of camera 140 will be read from ccd image sensor 110 by the view data that exposure generates, and implement Flame Image Process (S23).View data read end after, the view data that generates is stored in storage card 171, return step S16, controller of camera 140 is transferred to synchronous mode.When image taking begins (when shutter release button 130 is pressed entirely) like this, the reason that controller of camera 140 is transferred to Asynchronous Mode is, behind the captured image data till write down toward storage card 171, controller of camera 140 is as long as each handling part in the control camera body 100 (record of the processing of the view data that photographs and past storage card 171) need not to obtain synchronous cause with lens controller 240.Thus, controller of camera 140 can be absorbed in the processing in the camera body 100.
In addition, the view data of depositing in to storage card 171 is regenerated, and when being presented at monitor 120, controller of camera 140 drives with Asynchronous Mode with lens controller 240.During the regeneration action, therefore controller of camera 140 needn't specially be obtained with lens controller 240 as long as each handling part that is provided with in the control camera body 100 need not the handling part in the controls lens controller 240 synchronously.During regeneration, owing to do not obtain synchronously with lens controller 240, so controller of camera 140 can be absorbed in the regeneration of view data.Its result, controller of camera 140 can carry out the Regeneration Treatment of view data at high speed.In addition, by in regeneration, driving with Asynchronous Mode, thus can be in the process of regeneration, the power supply of ccd image sensor 110 is disconnected.This is because because controller of camera 140 and lens controller 240 drive with Asynchronous Mode, so controller of camera 140 need not synchronizing signal is sent to the cause of lens controller 240.Thus, when the regeneration of view data etc., the power supply of ccd image sensor 110 can be disconnected, can power saving.
Like this, in the related camera arrangement of present embodiment, if shutter release button 130 is by full push, then controller of camera 140 is transferred to Asynchronous Mode from synchronous mode.Thus, controller of camera 140, during in the processing of carrying out taken view data with toward the record of storage card 171 etc., camera body 100 need not specially be obtained synchronously with exchange camera lens 200, therefore controller of camera 140 can be absorbed in the processing of view data and the record of the past storage card 171 of view data.Its result, controller of camera 140 can carry out the processing of view data and the record of the past storage card 171 of view data at a high speed.
In addition, in the related camera arrangement of present embodiment, when the view data of record was regenerated in to storage card 171, controller of camera 140 moved with Asynchronous Mode.Thus, controller of camera 140 can be absorbed in the regeneration of view data.Its result, controller of camera 140 can carry out the Regeneration Treatment of view data at a high speed.
As mentioned above, in the camera arrangement of present embodiment, controller of camera 140 by order being notified to lens controller 240, switches synchronous mode and Asynchronous Mode.Thus,, control, can simplify the control of camera arrangement with Asynchronous Mode need not to obtain when synchronous.
2-2. the action during synchronous mode
In the synchronous mode, exchange camera lens 200 carries out exercises synchronously with the synchronizing signal that obtains from camera body 100.For example, exchange camera lens 200, and the synchronizing signal between the exposure period of expression ccd image sensor 110 is synchronously carried out the drive controlling of condenser lens 230, aperture 260, zoom lens 210.Below these actions are described.
In the camera arrangement of present embodiment, controller of camera 140 is to the frequency transmission synchronizing signal of lens controller 240 with 60 (Hz).
Lens controller 240 along with obtaining synchronizing signal, carries out the driving of F value.Lens controller 240 according to the F value that obtains, carries out the drive controlling of aperture 260.
In addition, lens controller 240 along with obtaining synchronizing signal, carries out the obtaining of positional information of zoom lens 210.
In addition, lens controller 240 along with obtaining synchronizing signal, is notified to controller of camera 140 with the information of representing the hand dither state.Controller of camera 140, the information of the hand dither state that obtains according to expression is considered the various control of dither state in one's hands.
As mentioned above, in synchronous mode, the control of the aperture of implementing by lens controller 240 260, zoom lens 210, OIS lens 220 etc., when the synchronizing signal that obtains from controller of camera 140 with lens controller 240 is synchronous, carry out with the frequency 60 (Hz) identical with the frequency of synchronizing signal.3. sum up
The camera arrangement that present embodiment is related is to comprise camera body 100 and the camera arrangement that exchanges camera lens 200.Camera body 100 possesses: the controller of camera 140 that generates synchronizing signal; The synchronizing signal that generates is sent to the fuselage bayonet socket 150 of exchange camera lens 200; Control camera body 100 controller of camera 140; According to control model, and generate the controller of camera 140 that is used for exchange camera lens 200 is controlled to be the order of synchronous mode (exchange camera lens 200 is synchronously controlled with synchronizing signal) and Asynchronous Mode (exchange camera lens 200 is controlled with synchronizing signal asynchronously) by controller of camera 140 decisions.Exchange camera lens 200 possesses: receive from the synchronizing signal of camera body 100 transmissions and the camera lens bayonet socket 250 of order; According to the lens controller 240 of the order that receives with synchronous mode or Asynchronous Mode control exchange camera lens 200.
By said structure, can control with Asynchronous Mode when synchronous need not.Therefore, controller of camera 140, need not to consider with exchange camera lens 200 synchronously, can be absorbed in the control of camera body 100.In addition, controller of camera 240 can be in order not obtain the restriction that is subjected to surpassing necessity with the synchronous of camera body 100.
In addition, in the present embodiment, controller of camera 140, can be when carrying out the dynamic image shooting, transmission is used to allow exchange camera lens 200 with the order of synchronous mode action, and is carrying out rest image when taking, and indication is used to allow the order of exchange camera lens 200 with the Asynchronous Mode action.When dynamic image is taken, need be used for the vibration control of automatic focus action, exchange camera lens 200 need move with synchronous mode.And carrying out full push, rest image when taking, owing to do not need to be used for the vibration control of automatic focus action, therefore need not to allow exchange camera lens 200 move with synchronous mode.Therefore, carry out rest image when taking, by allowing exchange camera lens 200 move with Asynchronous Mode, thereby controller of camera 140 can be absorbed in the control in the camera body 100.
In addition, in the present embodiment, controller of camera 140, thereby when controlling not the view data that controller of camera 140 is generated by ccd image sensor 110 and be taken into the handling part of back level of ccd image sensor 110 (for example, when need not to generate viewfinder image or in the image regeneration process), also can be controlled to be exchange camera lens 200 asynchronous.
When controller of camera 140 is not taken into view data, need not to allow ccd image sensor 110 synchronous, be controlled to be asynchronously, can alleviate the load of controller of camera 140 by exchanging camera lens 200 in this case with exchange camera lens 200.
(embodiment 2)
In the embodiment 1, between synchronous mode and Asynchronous Mode, be provided with as shown in Figure 2 " mode switch stand-by period ".In the present embodiment, as shown in Figure 4, be not provided with between synchronous mode and the Asynchronous Mode under the situation of " mode switch stand-by period ", realizing that the control that takes over seamlessly from synchronous mode toward Asynchronous Mode describes being used for.In the present embodiment, the processing of carrying out in the mode switch stand-by period in the embodiment 1 is carried out in " beginning to handle " or " end process ".The structure of camera arrangement 1, the action identical with embodiment 1 basically.Below, the action of the peculiar camera arrangement 1 of present embodiment is described.
In the exchange camera lens 200, in the synchronous mode,, in Asynchronous Mode, control according to the timing signal that generates in the exchange camera lens 200 according to controlling from the synchronizing signal of camera body 100.Therefore, after switching to Asynchronous Mode from synchronous mode, owing to provide control reference signal regularly to switch, so its control cycle also switches.Because this switching that control reference signal regularly is provided may have problems.
For example, as shown in Figure 5,, do not establishing under the situation of switching the stand-by period when switching from synchronous mode toward Asynchronous Mode as present embodiment, produce the control cycle t littler than the control cycle T1 of synchronous mode during.At this moment, in shorter control cycle t, must finish the processing that the control cycle T1 before switching is set.Therefore, need to accelerate the responsiveness of actuator (for example motor).But, if set the responsiveness of actuator soon, then may can not step-out take place correspondence at a high speed by actuator.
Therefore, in the present embodiment, under situation about switching from synchronous mode toward Asynchronous Mode, switching controls cycle immediately not, but the control cycle T1 before switching through after, adjusting control cycle to switch to the control cycle T2 in the exchange camera lens 200.With reference to Fig. 6, this action is elaborated.
In synchronous mode, lens controller 240 is that unit counts the length (T1) of control cycle with the control cycle, leaves among the DRAM241.Lens controller 240, when switching from synchronous mode toward Asynchronous Mode, the time point of the length (T1) of the control cycle before from mode switch the time, having passed through, the control cycle T2 of the exchange camera lens 200 the when length of control cycle is switched to Asynchronous Mode.That is to say, when switching, set the length that comprises the control cycle that switches time point, make that the length that comprises the control cycle that switches time point is identical with the control cycle length (T1) of synchronous mode from synchronous mode toward Asynchronous Mode.
Control cycle when so, the control cycle after the mode switch is with synchronous mode is identical.Therefore, after pattern just switched, that can carry out in the last cycle of synchronous mode finished dealing with.
(other embodiment)
In the camera arrangement 1 of above-mentioned embodiment, though controller of camera 140 also not necessarily will be taked this structure to the frequency notice synchronizing signal of lens controller 240 with 60 (Hz).Controller of camera 140, frequency that can 30 (Hz) be to lens controller 240 notice synchronizing signals, frequency notice synchronizing signal that also can 15 (Hz).That is to say no matter notify the synchronizing signal of what frequency can.
In addition, in the camera arrangement 1 of above-mentioned embodiment, lens controller 240 in Asynchronous Mode, is controlled each handling part with 120Hz.But, also not necessarily to take this structure.For example, lens controller 240 can be controlled each handling part with 60Hz in Asynchronous Mode, also can control each handling part by 30Hz.In addition, lens controller 240 need not all be controlled with 120Hz each handling part, can be according to each handling part and contents processing different, control with different frequency.
In addition, in the camera arrangement 1 of above-mentioned embodiment, controller of camera 140 sends to lens controller 240 with synchronizing signal in synchronous mode, synchronizing signal is not sent to lens controller 240 in Asynchronous Mode.But, also needn't take this structure.For example, controller of camera 140 can be following structure: all synchronizing signal is sent to lens controller 240, lens controller 240 in synchronous mode, Asynchronous Mode, in synchronous mode, obtain synchronously, but in Asynchronous Mode, do not obtain synchronously with synchronizing signal with synchronizing signal.
In addition, in the above-mentioned embodiment, though illustration have the structure of zoom lens 210 and OIS lens 220, these are not the necessary structure of the present invention.That is to say that be equipped with in the camera arrangement of the single zoom lens with zoom function and also can use the present invention, the camera arrangement that the exchange camera lens with hand shake compensation functionality is installed also can be used the present invention.
In addition, in the above-mentioned embodiment, though illustrative be camera body with movable reflective mirror, the present invention is defined in this.For example, in camera body, also can have movable reflective mirror, also can have and be used for prism that shot object image is separated.In addition, also can be in adapter, to have movable reflective mirror but not in the camera body.
In addition, in the above-mentioned embodiment, though illustration ccd image sensor 110 as imaging apparatus, the present invention is defined in this.For example, also available cmos image sensor or NMOS imageing sensor constitute imaging apparatus.
(utilizing on the industry possibility)
The present invention can be applied to exchange the camera system (specifically, being the static camera of number or video camera etc.) of the camera lens exchange formula that camera lens and camera body communicate
Above-mentioned explanation although specific embodiment is illustrated, as those skilled in the art, also can be known other a lot of distortion examples, correction and other utilization by inference. Therefore, embodiment is not limited to here specific open, should limit with appending claims. In addition, the application and Japan's patent application, Patent 2008-141929 number (proposition on May 30th, 2008) and Patent 2008-145687 number (proposition on June 3rd, 2008), and U.S. Provisional Application No. 61/053815 (proposition on May 16th, 2008) is associated, in being incorporated herein by the content with reference to them.
Description of drawings:
100 fuselages
110 ccd image sensors
111 AD converters
112 timing generators
120 LCD monitors
130 shutter release buttons
140 controller of camera
141 DRAM
150 fuselage bayonet sockets
160 power supplys
170 draw-in grooves
171 storage cards
200 exchange camera lenses
210 zoom lens
211 driving mechanisms
212 detecting devices
220 OIS lens
221 actuators
222 position-detection sensors
223 OIS IC
230 condenser lenses
233 focus on motor
240 lens controllers
241 DRAM
242 flash memories
243 counters
250 camera lens bayonet sockets
260 apertures
261 aperture motors
Claims (8)
1. a camera arrangement is made of camera body and exchange camera lens, wherein,
Described camera body possesses:
The synchronizing signal that generates synchronizing signal generates mechanism;
Control described camera body, and generate the fuselage control gear of the order be used to control described exchange camera lens; And,
Send the transmitting mechanism of described synchronizing signal and described order;
Described fuselage control gear is controlled, described exchange camera lens is sent the order that is used for that described exchange camera lens is set at the order of synchronous mode and is used for described exchange camera lens is set at the Asynchronous Mode beyond the described synchronous mode, synchronously control the action of described exchange camera lens in the described synchronous mode with described synchronizing signal;
Described exchange camera lens possesses:
Reception is from the synchronizing signal of described camera body transmission and the receiving mechanism of order; And,
Control the camera lens control gear of the action of described exchange camera lens;
Described camera lens control gear is controlled the action of described exchange camera lens according to the order that receives from described camera body with described synchronous mode or described Asynchronous Mode.
2. camera arrangement as claimed in claim 1, wherein,
Described Asynchronous Mode be with described exchange camera lens in the synchronizing signal that generates synchronously control the pattern of the action of described exchange camera lens.
3. camera arrangement as claimed in claim 1, wherein,
When dynamic image was taken, described fuselage control gear was controlled to be described synchronous mode with described exchange camera lens.
4. camera arrangement as claimed in claim 3, wherein,
When rest image was taken, described fuselage control gear was controlled to be described Asynchronous Mode with described exchange camera lens.
5. camera arrangement as claimed in claim 1, wherein,
Described camera body also comprises shot object image that shooting forms by described exchange camera lens and the photographic unit that generates view data;
In the time will not being taken into the handling part of level thereafter by the view data that described photographic unit generates, described fuselage control gear is controlled to be Asynchronous Mode with described exchange camera lens.
6. camera arrangement as claimed in claim 1, wherein,
Described synchronous mode has the 1st control cycle, and described Asynchronous Mode has the 2nd control cycle;
When described synchronous mode switches to described Asynchronous Mode, described camera lens control gear is set the length that comprises the control cycle that switches time point, and the feasible length that comprises the control cycle that switches time point is identical with the length of the 1st control cycle.
7. a camera body can be installed the exchange camera lens, wherein,
This camera body has:
The synchronizing signal that generates synchronizing signal generates mechanism;
Control described camera body, and generate the fuselage control gear of the order be used to control described exchange camera lens; And,
Send the transmitting mechanism of described synchronizing signal and described order;
Described fuselage control gear is controlled, described exchange camera lens is sent the order that is used for that described exchange camera lens is set at the order of synchronous mode and is used for described exchange camera lens is set at the Asynchronous Mode beyond the described synchronous mode, synchronously control the action of described exchange camera lens in the described synchronous mode with described synchronizing signal.
8. an exchange camera lens can be installed on camera body, wherein,
This exchange lens has:
Reception is from the synchronizing signal of described camera body transmission and the receiving mechanism of order; And,
The camera lens control gear that the action of described exchange camera lens is controlled;
Described camera lens control gear is controlled the action of described exchange camera lens according to the order that receives from described camera body with described synchronous mode or described Asynchronous Mode.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5381508P | 2008-05-16 | 2008-05-16 | |
| US61/053,815 | 2008-05-16 | ||
| JP2008-141929 | 2008-05-30 | ||
| JP2008141929 | 2008-05-30 | ||
| JP2008145687 | 2008-06-03 | ||
| JP2008-145687 | 2008-06-03 | ||
| PCT/JP2009/001848 WO2009139118A1 (en) | 2008-05-16 | 2009-04-22 | Camera system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102027411A true CN102027411A (en) | 2011-04-20 |
| CN102027411B CN102027411B (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980117679.XA Active CN102027411B (en) | 2008-05-16 | 2009-04-22 | Camera system |
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| Country | Link |
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| JP (1) | JP5520214B2 (en) |
| CN (1) | CN102027411B (en) |
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Also Published As
| Publication number | Publication date |
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| JP5520214B2 (en) | 2014-06-11 |
| JPWO2009139118A1 (en) | 2011-09-15 |
| CN102027411B (en) | 2013-07-24 |
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