CN1761910A - Lens exchange type camera system - Google Patents
Lens exchange type camera system Download PDFInfo
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- CN1761910A CN1761910A CN200480007642.9A CN200480007642A CN1761910A CN 1761910 A CN1761910 A CN 1761910A CN 200480007642 A CN200480007642 A CN 200480007642A CN 1761910 A CN1761910 A CN 1761910A
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Abstract
A lens exchange type camera system includes a camera main body having a camera CPU and a detection switch, and an exchange lens having a lens CPU. The detection switch is connected to the camera CPU and switched according to the exchange lens mounting start and switched to a restored state when the exchange lens mounting is complete. When the exchange lens is mounted on the camera main body, the camera CPU supplies a reset signal to the lens CPU in response to switching of the detection switch and releases the reset signal in response to switching of the detection switch to a restored state when the lens mounting is complete.
Description
Technical field
The present invention relates to lens exchange type camera system, be specifically related to the lens exchange type camera system of forming by camera body and the replacing lens that can on this camera body, load and unload.
Background technology
As everyone knows, lens exchange type camera is not as so-called vest-pocket camera, by being fixed on, phtographic lens constitutes as a whole camera on the camera body, but by in camera body and a plurality of replacing camera lens any one made up the camera that constitutes, therefore, must consider the coupling of camera body and replacing camera lens fully.
For example, from the power supply of camera body side under being arranged on the situation of changing the circuit supply capability in the camera lens, in order to prevent malfunction, after being installed to the replacing camera lens on the camera body, to changing the camera lens supply power, this method of supplying power has been disclosed in that for example the spy opens clear 59-048742 communique and the spy opens in the clear 62-267732 communique with official hour.
Open in the clear 59-048742 communique the spy, disclose following camera arrangement: on the installation portion of camera body and replacing camera lens, a plurality of opposed connection point terminals are set, after the installation of having finished camera lens, come energized by making their mutual conduction.According to this structure, only by being installed on the camera body changing a camera lens, can be simply from camera body to changing the camera lens supply capability.
In addition, open in the clear 62-267732 communique the spy, disclose following camera arrangement: camera body is provided with installing and the switch of switching state along with the replacing camera lens that will install, according to the state variation of this switch and the specific operating state of camera body (for example power switch is connected or the promotion operation of release-push etc.) and condition, beginning is to changing the camera lens supply power.According to this structure, can be optionally from camera body to changing the camera lens supply capability.
Yet, in lens exchange type camera system, must judge whether mounted replacing camera lens suitable, that is, judge whether it is the replacing camera lens that can guarantee to carry out correct action.This be because, under the situation of lens exchange type camera, sometimes the replacing camera lens that offered by other manufacturers is made may be installed on the camera body that certain manufacturer makes, if, then may not carry out correct camera action so the unwarrantable camera lens of manufacturer of making camera body has been installed.
In light of this situation, open in the flat 2-149073 communique the spy, following camera arrangement is disclosed: send test data by changing the camera lens side from the camera body side direction, return corresponding status information from changing the camera lens side, can judge whether the replacing camera lens of being installed is suitable at main body side.
Yet,, should be noted that the method that power supply is supplied with if comprise CPU in the circuit of replacing camera lens side.This be because, after just inserting power supply, because of the time constant of circuit with the chatter when switching, it is unstable that service voltage becomes easily, CPU is easy to generate abnormal operation.Open in clear 59-048742 communique and the disclosed method of supplying power of the clear 62-267732 communique of Te Kai above-mentioned spy, do not mention the spread of voltage state that has just inserted behind the power supply at all, also do not relate to its countermeasure.
In addition, under the manufacturer of the camera body situation different with the manufacturer that changes camera lens, if camera body can be discerned the various information of mounted camera lens, then these can prevent the incorrect action of this camera lens, and, can also carry out the more camera lens control of height.Therefore, in the camera body side, must can discern the manufacturer of exchange camera lens at least.
Yet, open in the flat 2-149073 communique in the disclosed camera arrangement above-mentioned spy, though show the method for the authentication operation of on camera body and replacing camera lens, carrying out,, do not mention at all about being used to discern the technology of the manufacturer that changes camera lens.
Summary of the invention
The present invention In view of the foregoing proposes, and its objective is provides a kind of in lens exchange type camera, prevents to change the lens exchange type camera system that camera lens carries out incorrect action when the replacing camera lens has been installed on the camera body.
Lens exchange type camera system of the present invention is characterized in that, has camera body and changes camera lens, and above-mentioned camera body comprises: the 1CPU of the photography action of control camera; Be set at the set bar on the camera side joint ring, itself and installation action interlock the carrying out displacement of changing camera lens; The detector switch that is connected with above-mentioned 1CPU, when the installation of changing camera lens begins, displacement by above-mentioned set bar switches to the 2nd state from the 1st state, when changing the installation of camera lens, switch to above-mentioned the 1st state from above-mentioned the 2nd state, above-mentioned replacing camera lens has the 2CPU of controls lens action, when above-mentioned replacing camera lens has been installed on above-mentioned camera body, above-mentioned 1CPU responds above-mentioned detector switch switches to the 2nd state from the 1st state action, supply with reset signal to above-mentioned 2CPU, respond above-mentioned detector switch and switch to the action of the 1st state, remove above-mentioned reset signal from the 2nd state.
Description of drawings
Fig. 1 is the stereographic map that is illustrated in the camera body in the lens exchange type camera system of representing an embodiment of the present invention and removably changes camera lens on this camera body.
Fig. 2 is the block scheme of structure of circuit of the camera body of presentation graphs 1.
Fig. 3 is the block scheme of structure of circuit of the replacing camera lens of presentation graphs 1.
Fig. 4 is the block scheme of the structure of expression camera body and the circuit of changing camera lens, and the set bar when being illustrated in installation replacing camera lens among the figure will be embedded into the state before the connecting hole.
Fig. 5 is the block scheme of the structure of expression camera body and the circuit of changing camera lens, is illustrated among the figure to install to change set bar behind the camera lens and be embedded into state in the connecting hole.
Fig. 6 is the sequential chart that is illustrated in the action of the CPU that the front and back camera body of changing camera lens is installed.
Fig. 7 is that the action with CPU is that the center is illustrated in the process flow diagram that the acts of authentication of changing the replacing camera lens behind the camera lens has been installed on the camera body.
Embodiment
Below, the present invention will be described in conjunction with illustrated embodiment.Fig. 1 is the camera body in the lens exchange type camera system of expression an embodiment of the present invention and removably changes the stereographic map of camera lens on this camera body.And in the following description, the place ahead of establishing camera lens optical axis O is the object side, and the rear is the imaging surface side.And the T-Ring that camera lens is changed in the installation among the present invention uses so-called bayonet ring.
As shown in Figure 1, at the front of camera body 1 central portion, be formed with forwards outstanding being used to the T-Ring installation portion 7 of changing camera lens 10 is installed, on the 7a of the front of this T-Ring installation portion 7, utilize 3 screws 3 to be fixed with circular camera side joint ring portion 2, this camera side joint ring portion 2 has by the T-Ring face 2a that constitutes with the rectangular surface level of optical axis O.
And, the T-Ring face of camera side joint ring portion 2 (below, being called camera side joint anchor ring) right side (in Fig. 1) of 2a is provided with set bar 4, it is forwards outstanding under the effect of the pushing spring 4a (with reference to Fig. 2) that is embedded in T-Ring portion 2 inside, can be embedded in the connecting hole 12 of changing camera lens 10.
And, the uniformly-spaced position in the inner periphery portion of camera side joint ring portion 2, being provided with is used to slide with penetrating embeds 3 bayonet socket pawl holding sections 5 of 3 bayonet socket claws 13 changing camera lens 10.And, in the zone that is surrounded by camera side joint ring portion 2, on the 7a of the front of T-Ring installation portion 7, be provided be formed at a plurality of camera lens side terminal groups 14 contacts (connection) of changing camera lens 10, surface of contact is hemispheric a plurality of camera side terminal groups 6 (connection point terminal unit) of protrusion forwards.
And,, be provided with the installation Xie Chu Hook 8 that changes camera lens 10 at the right flank of T-Ring installation portion 7.This Xie Chu Hook 8 is used for when unloading camera lens, and the set bar 4 that forwards is projected in the connecting hole 12 of changing camera lens 10 under the installment state of camera lens is withdrawed from from the connecting hole 12 of changing camera lens 10.
Change camera lens 10 and have a plurality of lens combination 10a in inside, on the face, be formed with circular camera lens side joint ring portion 11 in its back-end.This camera lens side joint ring portion 11 have when when changing camera lens 10 and be installed on the camera body 1 and camera side joint anchor ring 2a butt, by the bayonet socket face 11a that constitutes with rectangular of optical axis O, on the neighboring of this bayonet socket face 11a, be formed with 3 the outstanding laterally above-mentioned bayonet socket claws 13 that on the same plane of bayonet socket face 11a, form.
And, on camera lens side joint ring portion 11, be equipped with above-mentioned connecting hole 12, when being installed in replacing camera lens 10 on the camera body 1, set bar 4 is embedded into above-mentioned connecting hole 12, and above-mentioned connecting hole 12 more forwards gos deep into the overhang greater than the set bar of giving prominence to from camera side joint anchor ring 2a 4, and, on camera lens side bayonet socket face 11a, be provided with a plurality of above-mentioned camera lens side terminal group 14 with a plurality of above-mentioned camera side terminal group 6 sliding contacts (connection).And these a plurality of camera lens side terminal groups 14 form the replacing camera lens side terminal group among the present invention, the part of transmitting element, form with camera lens side bayonet socket face 11a at grade.
On the camera body 1 that constitutes like this, change camera lens 10 in order to install, at first, 3 bayonet socket claws 13 changing camera lens 10 are fitted between 3 bayonet socket pawl holding sections 5 of camera body 1 respectively.At this moment, set bar 4 is pushed and retreats by camera lens side joint ring portion 11.
Then, be that the center rotates until stopping in a direction changing camera lens 10 with optical axis O.Like this, on the position that 3 bayonet socket claws 13 engage in 3 bayonet socket pawl holding sections 5, camera lens is fixed and installs.During this,, afterwards, be embedded into connecting hole 12 on one side in the camera lens installation site Yi Bian set bar 4 is retreated by 11 pushings of camera lens side joint ring portion.The state that will be embedded into connecting hole 12 from this set bar 4 is to the state that has embedded, be arranged on the camera body 1 a plurality of camera side terminal groups 6 be arranged on a plurality of camera lens side terminal groups 14 of changing on the camera lens 10 and closely contact.Like this, changing camera lens 10 is installed on the camera body 1.
On the other hand, when unloading when changing camera lens 10 from camera body 1, at first, promote above-mentioned installation Xie Chu Hook 8, at this moment, the elasticity of set bar 4 opposing pushing spring 4a and rearward moving breaks away from the connecting hole 12 of changing camera lens 10.
Then, while promote above-mentioned Xie Chu Hook 8 replacing camera lens 10 opposite direction with installation the time is rotated.Like this, 3 bayonet socket claws 13 slide on direction opposite when being installed in 3 bayonet socket pawl holding sections 5, away from 3 bayonet socket pawl holding sections 5, so when when changing camera lens 10 and move on the optical axis direction and the installation of camera body 1 be disengaged.Like this, changing camera lens 10 is unloaded from camera body 1.
Fig. 2 is the block scheme of the structure of the circuit in the camera body 1 of presentation graphs 1.
As shown in Figure 2, the major part of the circuit of camera body 1 is by constituting as the lower part: the 1st circuit 20 (the 1st circuit unit), and it comprises the camera cpu 21 of the conduct 1CPU of the action of controlling camera body 1 integral body, camera ROM 22 (the 1st storage unit), the mu balanced circuit 24 of formation the 1st storer; Power circuit 23 (power supply unit) by formations such as power-supply battery 23a or AC adapters (not shown); The status detection switch 25 (installation detecting unit) that constitutes by pushbutton switch, detect the set bar 4 that is pushed by above-mentioned pushing spring 4a (the beginning detecting unit is installed) (detecting unit); The above-mentioned camera side terminal group 6 that constitutes by a plurality of terminals.And judging unit, licence units, feed unit, electric power that CPU 21 constitutes among the present invention are supplied with the beginning unit, are removed unit, reading unit, change unit, reset unit.
Camera side terminal group 6 is by constituting as the lower part: be used for to the 1st power supply terminal 26 of changing camera lens 10 supply powers; The 1st ground terminal 27; By the 1st signal terminal 28a (the 1st detecting unit) of installation that detect to change camera lens 10 be used for photograph pusher side signal terminal 28 to the 2nd signal terminal 28b formation of the camera lens CPU41 of replacing camera lens 10 described later (with reference to Fig. 3) output reset signal; Constitute by the 1st communication terminal 29a, the 2nd communication terminal 29b, the 3rd communication terminal 29c, the 4th communication terminal 29d, the 5th communication terminal 29e, be used for photograph pusher side communication terminal 29 at the intercommunication of camera cpu 21 and camera lens CPU 41.
Between the photograph pusher side power lead and camera side joint ground wire of power circuit 23, be connected with camera ROM22, camera cpu 21, mu balanced circuit 24 respectively, and the fixed terminal of detector switch 25 also is connected to camera side joint ground wire.
Mu balanced circuit 24 is made of for example DC/DC converter, by the above-mentioned VCONT terminal control of CPU 21, voltage stabilization from power circuit 23 outputs, this voltage of stabilization by the 1st power supply terminal 26 as power supply voltage supplying replacing camera lens 10.
Fig. 3 is the block scheme of circuit structure of the replacing camera lens 10 of presentation graphs 1.
As shown in Figure 3, the circuit of changing camera lens 10 constitutes its major part by the 2nd circuit 40 (the 2nd circuit unit), and the 2nd circuit 40 has: the camera lens CPU 41 (sensing element) of the conduct 2CPU of the action of control replacing camera lens 10 integral body; Constitute the camera lens ROM 42 (the 2nd storage unit) of the 2nd storer; Motor drive circuit 43; Voltage conversion circuit 44.
Camera lens CPU41 has power supply terminal Vcc2, reseting terminal RESET, camera lens CPU starting lead-out terminal LSL2B2, communication lead-out terminal LSB2L2, communication data terminal LSDIO2, communication clock terminal LSCLK2, adapter communication terminal LSB2A2, GND terminal.
Camera lens side terminal group 14 is made of following each terminal: be used for the 2nd power supply terminal 46 to camera lens CPU 41 supply powers; The 2nd ground terminal 47; By the 3rd signal terminal 48a that is used to detect the installation of changing camera lens 10, be used to import the camera lens side signal terminal 48 that the 4th signal terminal 48b from the reset signal of the above-mentioned camera lens reseting terminal LSRST of camera cpu 21 constitutes; Constitute by the 6th communication terminal 49a, the 7th communication terminal 49b, the 8th communication terminal 49c, the 9th communication terminal 49d, the 10th communication terminal 49e, be used for camera lens side communication terminal 49 at the intercommunication of camera cpu 21 and camera lens CPU 41.
And, camera lens side terminal group 14 is when being installed in replacing camera lens 10 on the camera body 1, Fig. 4, shown in Figure 5 as described later, the 1st power supply terminal 26 is connected with the 2nd power supply terminal 46, the 1st ground terminal 27 is connected with the 2nd ground terminal 47, photograph pusher side signal terminal 28 is connected with camera lens side signal terminal 48, and photograph pusher side communication terminal 29 is connected with camera lens side communication terminal 49.
The terminal Vcc2 of camera lens CPU 41 is connected with camera lens side power lead by voltage conversion circuit 44, above-mentioned RESET terminal is connected with the 4th signal terminal 48b, above-mentioned LSL2B2 terminal is connected with the 6th communication terminal 49a, above-mentioned LSB2L2 terminal is connected with the 7th communication terminal 49b, above-mentioned LSDIO2 terminal is connected with the 8th communication terminal 49c, above-mentioned LSCLK2 terminal is connected with the 9th communication terminal 49d, above-mentioned LSB2A2 terminal is connected with the 10th communication terminal 49e, and above-mentioned GND terminal is connected with above-mentioned camera lens side joint ground wire.
By such formation the 2nd circuit 40,44 power supply supply motor driving circuits 43 of obstructed superpotential change-over circuit from the power circuit 23 (with reference to Fig. 2) of camera body 1, control for camera lens CPU 41 and camera lens ROM 42 comes supply power by voltage conversion circuit 44.
Then, illustrate and use the camera body 1 that constitutes like this and change camera lens 10 to method as replacing camera lens 10 supply powers of the lens exchange type camera system 100 of embodiments of the present invention.
Fig. 4 is the block scheme of the structure of the lens exchange type camera system circuit that constitutes of the replacing camera lens 10 of the camera body 1 of presentation graphs 2 and Fig. 3, is illustrated among the figure to install to change camera lens 10 back set bars 4 and will be embedded into state before the connecting hole 12; Fig. 5 is the block scheme of the structure of expression lens exchange type camera system circuit, is illustrated among the figure to install to change camera lens 10 back set bars 4 and be embedded into state in the connecting hole 12; Fig. 6 is the sequential chart of action of CPU21 that is illustrated in the camera body 1 of front and back that install to change camera lens 10.
As shown in Figure 6, in lens exchange type camera system 100, be installed under the installation initial state of camera body 1 changing camera lens 10, promptly, 3 bayonet socket claws 13 (with reference to Fig. 1) of changing camera lens 10 are fitted between 3 bayonet socket pawl holding sections 5 (with reference to Fig. 1) of camera body 1, and by pushing set bars 4 by the camera lens side joint ring portion 11 of changing camera lens 10, this set bar 4 retreats under the state in the camera side joint ring portion 2, as shown in Figure 4, rearward end pushing detector switch 25 by set bar 4, detector switch 25 becomes on-state from off-state, promptly becomes the 2nd state from the 1st state.Under this on-state, the above-mentioned lock pin switch terminal LPSW of camera cpu 21 switches to connection from disconnection.
Corresponding above-mentioned LPSW becomes the state of connection, camera cpu 21 as shown in Figure 6, from the above-mentioned camera lens reseting terminal LSRST output of high impedance status low level signal as reset signal.And, under this state, because camera side terminal group 6 does not also contact with camera lens side terminal group 14, so be not sent to camera lens CPU 41 from the reset signal of above-mentioned camera lens reseting terminal LSRST.
Then, be installed under the state on the camera body 1 changing camera lens 10 being about to finish, promptly, change camera lens 10 rotation of sliding in one direction making, camera lens side joint ring portion 11 is rotated while pushing set bar 4, as shown in Figure 4, and at the state of detector switch 25 for connecting, and set bar 4 is about to be embedded under the state in the connecting hole 12, and camera side terminal group 6 contacts with camera lens side terminal group 14.At this moment, because the 4th signal terminal 48b of the 2nd signal terminal 28b of camera side terminal group 6 and camera lens side terminal group 14 contacts, so be imported into the reseting terminal RESET of camera lens CPU 41 from the continuous reset signal of the above-mentioned camera lens reseting terminal LSRST output of camera cpu 21, so camera lens CPU41 is reset.
When the 3rd signal terminal 48a of the 1st signal terminal 28a of camera side terminal group 6 and camera lens side terminal group 14 contacted, the 1st signal terminal 28a and the 3rd signal terminal 48a became the GND level state.When the Shot Detection terminal LSDTCT of the camera cpu 21 by being connected to the 1st signal terminal 28a detects this GND level state, camera cpu 21 to above-mentioned mu balanced circuit control with terminal VCONT output action signal.Like this, supply with for example operating voltage of 4.2V from power circuit 23 beginnings to the 1st power supply terminal 26 of the camera side terminal group 6 that is connected to above-mentioned terminal VCONT by mu balanced circuit 24.That is, during camera lens CPU 41 output reset signals, supply power.
Then, when becoming to finish the state of changing camera lens 10 is installed on camera body 1, promptly, become 3 bayonet socket claws 13 changing camera lens 10 and be fastened in 3 bayonet socket pawl holding sections 5, change camera lens 10 and be fixed on the camera body 1, as shown in Figure 5, set bar 4 is embedded under the state in the connecting hole 12, because this set bar 4 is outstanding in connecting hole 12 by pushing spring 4a,, promptly become off-state from on-state so detector switch 25 becomes the 1st state from the 2nd state of the present invention.Therefore, as shown in Figure 6, the lock pin switch terminal LPSW of camera cpu 21 becomes off-state from on-state.
Accept the off-state of lock pin switch terminal LPSW, camera cpu 21 consider the not shown timer of the chatter time utilization of switches in timing after the stipulated time of setting, remove from the reset signal of camera lens reseting terminal LSRST output.That is, remove the reset mode of camera lens CPU41.Like this, camera lens CPU 41 starts working.
Like this, in the present embodiment, carried out after the resetting of camera lens CPU 41, carried out supplying with to the power supply of camera lens CPU 41 at camera cpu 21.
Then, be installed in the method for the manufacturer of the replacing camera lens 10 on the camera body 1 in conjunction with Fig. 5～Fig. 7, table 1, table 2 explanation identification in the lens exchange type camera system 100 of embodiments of the present invention.
Fig. 7 is that the action with CPU 21 is the process flow diagram that the center is illustrated in the acts of authentication of the replacing camera lens 10 behind the replacing camera lens 10 that Fig. 3 has been installed on the camera body 1 of Fig. 2.Table 1 is the table of the various data in the camera lens ROM 42 of the expression replacing camera lens 10 that is stored in Fig. 3, and table 2 is the tables of the ID of manufacturer in the camera ROM 22 of the expression camera body 1 that is stored in Fig. 2.
[table 1]
| The classification of data | Content | Byte length |
| The camera lens classification | The data of the expression function that camera lens possessed | 2 |
| Camera lens ID | Be used to discern the data of machine, and be used to discern | 6 |
| The ID of manufacturer | Be used to discern the data of | 1 |
| Zoom is cut apart number | Several data of cutting apart of representing | 1 |
| Open F No. | Open f-number data at each | 1 |
| Minimum FNo. | Minimum aperture Value Data at each zoom position place | 1 |
| : | : | : |
| : | : | : |
[table 2]
| The ID of manufacturer | Manufacturer |
| 01 | Company limited of * * * |
| 02 | ○○○?K.K. |
| 03 | △ △ △ company |
| 04 | * * Industrial Co., Ltd |
| 05 | K.K.?●●● |
| : | : |
| : | : |
| : | : |
As shown in Figure 7, at first at step S1, camera cpu 21 is being removed after the reset signal of camera lens reseting terminal LSRST (with reference to Fig. 5) output, as shown in Figure 6, after having passed through stipulated time t from installation, to high level (H) signal of camera lens CPU 41 outputs, enter step S2 from communication request terminal LSB2L1 as communication request signal.
At step S2, be received in step S1 and exported communication request signal from above-mentioned terminal LSB2L1, the camera lens CPU starting of judging camera cpu 21 is replied terminal LSL2B1 and whether has been become height (H) level, promptly, whether replying from camera lens CPU 41 is arranged, specifically, judge whether the initiating signal of exporting from the camera lens CPU starting lead-out terminal LSL2B2 of camera lens CPU 41 is imported into this terminal LSL2B1.If this terminal LSL2B1 becomes height (H) level, then transfer to step S3, if do not become height (H) level, then transfer to step S7.
At step S7, accept output from above-mentioned terminal LSB2L1, the time that above-mentioned terminal LSL2B1 becomes before height (H) level is carried out timing.If should the time stipulated time not through having stipulated, then return step S2, if passed through then enter step S8.
At step S2, because above-mentioned terminal LSL2B1 becomes height (H) level, camera cpu 21 becomes the state that can intercom mutually with camera lens CPU 41.Therefore, between camera cpu 21 and camera lens CPU 41, carry out data communication at step S3.This data communication is by the so-called serial communication of common general knowledge.Here the data communication among the description of step S3.As shown in Figure 6, from the communication clock terminal LSCLK1 output communication clock signal of camera cpu 21, afterwards, from communication data terminal LSDIO1 to camera lens CPU41 output communication data.Accept this output, camera lens CPU41 is cut apart the above-mentioned communication data terminal LSDIO1 that number, lens datas such as open F No, minimum FNo output to camera cpu 21 to camera lens classification, camera lens ID, the ID of manufacturer, zoom shown in the table 1 that is stored in the camera lens ROM42 (with reference to Fig. 3) from communication data terminal LSDIO2.
Here, the data of being stored among the camera lens ROM42 of instruction card 1, above-mentioned camera lens classification is the data of the expression function that camera lens possessed, above-mentioned camera lens ID is machine and the individual data that are used to discern camera lens, the above-mentioned ID of manufacturer is the data that are used to discern the manufacturer of camera lens, above-mentioned zoom cut apart number be the expression camera lens zoom encoder cut apart several data, above-mentioned open F No is the data that are illustrated in the open f-number of the camera lens on each zoom position, and minimum FNo is the data that are illustrated in the minimum aperture value of each locational camera lens.And byte long is represented the size of data, and above-mentioned camera lens classification, camera lens ID, the ID of manufacturer, zoom are cut apart number, open F No, minimum FNo are the data of using in the photography action.
Turn back to process flow diagram shown in Figure 7, from camera lens CPU41 after the above-mentioned communication data terminal LSDIO1 of camera cpu 21 exports various data, transfer to step S4.
At step S4, camera cpu 21 stores the above-mentioned ID of manufacturer in the various lens datas that are input to above-mentioned communication data terminal LSDIO1 in the camera ROM22 (with reference to Fig. 2) into, and reference in the table of the ID of manufacturer shown in the table 2 enters step S5.In the ID of this manufacturer table, input has the manufacturer's tabulation that can correctly control the replacing camera lens of camera action by camera cpu 21.
At step S5, judge in the camera ROM22 the ID of manufacturer table with from the ID of manufacturer of camera lens ROM42 input whether consistent (authentication).If consistent, then transfer to step S6, the camera cpu 21 of camera body 1 is carried out the common camera action of being undertaken by the camera lens CPU41 that controls replacing camera lens 10.On the other hand, if inconsistent, then transfer to step S8.
At step S8, if do not reply communication request from camera cpu 21 at above-mentioned steps S7 camera lens CPU41, perhaps the ID of manufacturer in step S5 camera ROM22 shows and is inconsistent from the ID of manufacturer of camera lens ROM42 output, carrying out the improper warning of camera lens on the not shown display device such as LCD at camera body 1 under the control of camera cpu 21, replacing camera lens out of use intention on this camera body 1 of notifying the user to install.And this camera lens is not suitable for warning can be undertaken by sending beep sound from camera body.Afterwards, enter step S9,, the action of camera body 1 is stopped at step S9.
Like this, in the control method of camera of the lens exchange type camera system of representing embodiments of the present invention and this lens exchange type camera system, by camera body 1 and the intercommunication mutually of changing camera lens 10, read the ID of the manufacturer sign indicating number that is stored in the camera lens ROM42, by carrying out reference with the ID of the manufacturer table that is stored in the camera ROM22, whether be suitable replacing camera lens, after checking, if suitable then begin to carry out camera action if checking and authenticating mounted replacing camera lens.
And the connection of the detector switch 25 that as mentioned above, camera cpu by camera body 1 is 21 that carry out, use set bar 4 detects, and carries out resetting of camera lens CPU41 reliably, afterwards, carries out supplying with to the power supply of camera lens CPU41 from camera body 1.
Like this, can prevent when being installed in the replacing camera lens on the camera body, the camera lens CPU41's that spread of voltage state behind the access power supply causes is undesired, and, can prevent to cause that this replacing camera lens carries out incorrect action because inappropriate replacing camera lens is installed.
Embodiments of the present invention have been described above, but have been not limited to above-mentioned embodiment, certainly in the scope that does not break away from spirit of the present invention, carried out numerous variations.
According to the present invention as described hereinbefore, can provide a kind of in lens exchange type camera, can prevent from changing the lens exchange type camera system that camera lens carries out incorrect action when camera lens is installed on the camera body changing.
Claims (15)
1. lens exchange type camera system, it has camera body and releasably is installed in replacing camera lens on this camera body, it is characterized in that,
Be made up of camera body and the replacing lens of the 2CPU with controls lens action, above-mentioned camera body comprises: the 1CPU of the photography action of control camera; Set bar, it is set on the camera side joint ring, with the installation action linkage shifting of changing camera lens; Detector switch, it is connected with above-mentioned 1CPU, and the corresponding installation of changing camera lens begins, and switches to the 2nd state by the displacement of above-mentioned set bar from the 1st state, and the corresponding installation of changing camera lens switches to above-mentioned the 1st state from above-mentioned the 2nd state,
When above-mentioned replacing camera lens has been installed on above-mentioned camera body, above-mentioned 1CPU, respond above-mentioned detector switch switches to the 2nd state from the 1st state situation, supply with reset signal to above-mentioned 2CPU, respond above-mentioned detector switch and switch to the situation of the 1st state, remove above-mentioned reset signal from the 2nd state.
2. lens exchange type camera system, it has camera body and releasably is installed in replacing camera lens on this camera body, it is characterized in that,
Above-mentioned camera body has:
The power supply unit that comprises power-supply battery;
The 1st circuit, it comprises the 1CPU of the supply of accepting electric power by power lead that is connected with above-mentioned power supply unit and ground wire;
The electric power feed unit, it is controlled by above-mentioned 1CPU, changes camera lens supplying with from the electric power of above-mentioned power supply unit;
The installation detecting unit, it detects the installation of above-mentioned replacing camera lens and exports the installation signal to above-mentioned 1CPU;
Camera side terminal group, it is made of a plurality of connection point terminals, is configured near the installation portion of above-mentioned replacing camera lens, comprising: the 1st power supply terminal that is connected to above-mentioned electric power feed unit; Be connected to the 1st ground terminal of above-mentioned ground wire; Be connected to the 1st signal terminal and the 2nd signal terminal of the signal input port of above-mentioned 1CPU,
Above-mentioned replacing camera lens comprises:
The 2nd circuit that comprises 2CPU;
Change camera lens side terminal group, it is made of a plurality of connection point terminals, when changing camera lens and be installed on the camera body and each terminal butt of camera side terminal group, comprising: the 2nd power supply terminal, it is connected to the power lead of above-mentioned the 2nd circuit, with above-mentioned the 1st power supply terminal butt; The 2nd ground terminal, it is connected to the ground wire of above-mentioned the 2nd circuit, with above-mentioned the 1st ground terminal butt; The 3rd signal terminal, it is connected to the ground wire of above-mentioned the 2nd circuit, when being about to finish the installation of changing camera lens and above-mentioned the 1st signal terminal butt; The 4th signal terminal, it is connected to the reseting terminal of above-mentioned 2CPU, with above-mentioned the 2nd signal terminal butt,
Above-mentioned 1CPU supplies with reset signal by signal output port and above-mentioned the 2nd signal terminal to above-mentioned 2CPU, when above-mentioned signal input port is connected to the ground wire of above-mentioned the 2nd circuit by the above-mentioned the 1st and the 3rd signal terminal, make above-mentioned electric power feed unit become operating state, afterwards, when the installation signal that receives from above-mentioned installation detecting unit, remove above-mentioned reset signal.
3. lens exchange type camera system according to claim 2, it is characterized in that, above-mentioned camera body has the beginning of installation detecting unit, its installation that detects above-mentioned replacing camera lens begins and exports commencing signal is installed, and above-mentioned 1CPU exports above-mentioned reset signal when receiving above-mentioned installation commencing signal.
4. lens exchange type camera system, it has camera body and releasably is installed in replacing camera lens on this camera body, it is characterized in that having:
The 1st circuit unit, it is set on the above-mentioned camera body, comprises 1CPU;
The 2nd circuit unit, it is set on the above-mentioned replacing camera lens, comprises that acceptance supplies with and the 2CPU of action from the electric power of above-mentioned camera body;
The connection point terminal unit, when the replacing camera lens is installed on the camera body, its above-mentioned the 1st circuit unit and above-mentioned the 2nd circuit unit are electrically connected, it comprises: the 1st detecting unit, variation has taken place in its current potential by the specific connection point terminal in a plurality of connection point terminals that detect the snap portions that is configured in above-mentioned camera body and above-mentioned replacing camera lens, is installed on the camera body and detect the replacing camera lens; The 2nd detecting unit, it is with the timing than the detection constant time lag of above-mentioned the 1st detecting unit, according to the position component of the installation action interlock of changing camera lens, detect the installation of changing camera lens, change camera lens and be installed on the camera body and detect;
The electric power feed unit, it is set on the above-mentioned camera body, and carry out the electric power of the foregoing circuit unit in above-mentioned replacing camera lens and supply with,
Above-mentioned 1CPU is under the state of the reset mode that keeps above-mentioned 2CPU, and the testing result that responds above-mentioned the 1st detecting unit makes above-mentioned electric power feed unit begin action, and afterwards, the testing result that responds above-mentioned the 2nd detecting unit is removed resetting of above-mentioned 2CPU.
5. lens exchange type camera system, it has camera body and releasably is installed in replacing camera lens on this camera body, it is characterized in that,
Above-mentioned camera body has:
The power supply unit that comprises power-supply battery;
The 1st circuit, it comprises by power lead that is connected with above-mentioned power supply unit and ground wire accepts the 1CPU that electric power is supplied with;
The electric power feed unit, it changes camera lens supplying with from the electric power of above-mentioned power supply unit under the control of above-mentioned 1CPU;
The 1st storer, it is built in or is connected to above-mentioned 1CPU, stores manufacturer's identification code of a plurality of replacing camera lens manufacturer,
Above-mentioned replacing camera lens comprises:
The 2nd circuit that comprises 2CPU;
The 2nd storer, it is built in or is connected to above-mentioned 2CPU, stores manufacturer's identification code of specifying the manufacturer that changes camera lens,
Above-mentioned 1CPU is after making above-mentioned electric power feed unit be in operating state, communicate with above-mentioned 2CPU, reception is stored in the above-mentioned manufacturer identification code in above-mentioned the 2nd storer, by manufacturer's identification code of above-mentioned reception and the above-mentioned a plurality of manufacturers identification code that is stored in above-mentioned the 1st storer are compared, judge whether the replacing camera lens is suitable for above-mentioned camera body.
6. lens exchange type camera system, it has camera body and releasably is installed in replacing camera lens on this camera body, it is characterized in that, comprising:
The 1st storage unit, it is set in the above-mentioned camera body, stores manufacturer's sign indicating number of a plurality of replacing camera lens manufacturer;
The 2nd storage unit, it is set in the above-mentioned replacing camera lens, and storage is used to specify manufacturer's identification code of the manufacturer of this replacing camera lens;
Judging unit, it is stored in the manufacturer's identification code in above-mentioned the 2nd storage unit and a plurality of manufacturers identification code of being stored in above-mentioned the 1st storage unit compares, manufacturer's identification code of judging above-mentioned replacing camera lens be stored in above-mentioned the 1st storage unit in a plurality of manufacturers identification code in whether any one consistent;
Licence units, it for manufacturer's identification code of changing camera lens with under any one the consistent situation in a plurality of manufacturers identification code in being stored in above-mentioned the 1st storage unit, permits later camera to move in above-mentioned judgment unit judges.
7. lens exchange type camera system, it has camera body and releasably is installed in replacing camera lens on this camera body, it is characterized in that,
Above-mentioned camera body has:
Power circuit;
The 1st circuit, it accepts the electric power supply by the power lead and the ground wire that are connected with above-mentioned power circuit, and it comprises: 1CPU; Mu balanced circuit, it makes the voltage stabilization of above-mentioned power circuit under the control of this 1CPU; The 1st storer, it is connected to above-mentioned 1CPU, and storage is used to discern a plurality of manufacturers sign indicating number of the manufacturer that changes camera lens;
Set bar, it is set at the T-Ring portion that is used to install above-mentioned replacing camera lens, with installation action interlock the carrying out displacement of changing camera lens;
Detector switch, it is connected with above-mentioned 1CPU, displacement by above-mentioned set bar when the installation of changing camera lens begins switches to the 2nd state from the 1st state, and the displacement by above-mentioned set bar when changing the installation of camera lens switches to above-mentioned the 1st state from above-mentioned the 2nd state;
Camera side terminal group, it is made of a plurality of connection point terminals, is configured near the above-mentioned T-Ring portion, comprising: the 1st power supply terminal that is connected to the output terminal of above-mentioned mu balanced circuit; Be connected to the 1st ground terminal of above-mentioned ground wire; Be connected to the 1st signal terminal of the signal input port of above-mentioned 1CPU; Be connected to the 2nd signal terminal of the signal output port of above-mentioned 1CPU; Be connected to 1st to 5th communication terminal of the communication of above-mentioned 1CPU respectively with port,
Above-mentioned replacing camera lens has:
2CPU;
The 2nd circuit, it comprise be connected to this 2CPU, the 2nd storer of manufacturer's identification code of storage representation manufacturer at least;
Change camera lens side terminal group, it is made of a plurality of connection point terminals, is configured near the T-Ring portion, comprise: the 2nd power supply terminal, when when changing a camera lens and be installed on the camera body, itself and above-mentioned the 1st power supply terminal butt are connected to the power supply of photograph pusher side the power lead of above-mentioned the 2nd circuit; The 2nd ground terminal, it is connected to the ground wire of above-mentioned the 2nd circuit, when being installed in the replacing camera lens on the camera body, with above-mentioned the 1st ground terminal butt; The 3rd signal terminal, it is connected to the ground wire of above-mentioned the 2nd circuit, when when changing a camera lens and be installed on the camera body, before the above-mentioned installation of above-mentioned detector switch detects with above-mentioned the 1st signal terminal butt; The 4th signal terminal, it is connected to the reseting terminal of above-mentioned 2CPU, when being installed in the replacing camera lens on the camera body, with above-mentioned the 2nd signal terminal butt; The the 6th to the 10th communication terminal, its communication that is connected to above-mentioned 2CPU terminal, when being installed in the replacing camera lens on the camera body, respectively with above-mentioned the 1st to the 5th communication terminal butt,
And above-mentioned 1CPU comprises:
Feed unit, it responds above-mentioned detector switch switches to the 2nd state from the 1st state situation and supplies with reset signal by above-mentioned signal output port and above-mentioned the 2nd signal terminal to above-mentioned 2CPU;
Electric power is supplied with the beginning unit, and when above-mentioned signal input port was connected to the ground wire of above-mentioned the 2nd circuit by the above-mentioned the 1st and the 3rd signal terminal, it began from the supply of above-mentioned mu balanced circuit to the electric power of changing the camera lens side;
Remove the unit, it responds above-mentioned detector switch and removes above-mentioned reset signal from the situation that the 2nd state switches to the 1st state;
Reading unit, it communicates by the 1st to the 5th communication terminal and the 6th to the 10th communication terminal and above-mentioned 2CPU, reads the manufacturer's identification code that is stored in the replacing camera lens in above-mentioned the 2nd storer;
Judging unit, its judge the above-mentioned manufacturer's identification code that reads whether and 1 of being stored in a plurality of manufacturers identification code in above-mentioned the 1st storer consistent;
The change unit, it changes ensuing camera action according to the judged result of above-mentioned judging unit.
8. a camera is the camera in the lens exchange type camera system, it is characterized in that having:
Be configured in the CPU of photograph pusher side;
The electric power feed unit, it carries out electric power to camera lens side CPU and supplies with under the control of photograph pusher side CPU;
Detecting unit, it detects the installation of changing camera lens according to the position component that the installation action with the replacing camera lens links and carries out displacement;
A plurality of camera side terminal groups, when when changing a camera lens and be installed on the camera body, a plurality of connection point terminal butts of itself and camera lens side, it comprises: power supply terminal, its electric power that is used to carry out to above-mentioned camera lens side CPU is supplied with, and is connected to above-mentioned electric power feed unit; Ground terminal; The 1st signal terminal, it is used to detect the installment state of changing camera lens, is connected to the signal input port of above-mentioned photograph pusher side CPU, is connected to the ground wire of changing in the camera lens under the state of the installation of changing camera lens; The 2nd signal terminal, it is used for supplying with reset signal to above-mentioned camera lens side CPU, is connected to the signal output port of above-mentioned photograph pusher side CPU,
Above-mentioned photograph pusher side CPU is when above-mentioned signal input port becomes earthing potential, be set at operating state at following above-mentioned electric power feed unit of the state that above-mentioned camera lens side CPU is remained reset mode, afterwards, respond the testing result of the installation of above-mentioned detecting unit, remove the reset mode of above-mentioned camera lens side CPU.
9. a camera is the camera in the lens exchange type camera system, it is characterized in that, comprising:
The 1st detecting unit, it judges the installment state of changing camera lens by having or not to be electrically connected according to the circuit in circuit in the camera and the replacing camera lens, detects the installation of changing camera lens;
The 2nd detecting unit, it judges the installment state of changing camera lens by the position component that links according to the installation action with above-mentioned replacing camera lens, detects the installation of changing camera lens with the timing that postpones than above-mentioned the 1st detecting unit;
Reset unit, it sets above-mentioned CPU for reset mode before detecting the installation of changing camera lens at above-mentioned the 2nd detecting unit, removes above-mentioned reset mode when above-mentioned the 2nd detecting unit detects the installation of changing camera lens;
The electric power feed unit, make by above-mentioned reset unit above-mentioned CPU be in reset mode during in, when above-mentioned the 1st detecting unit detected the installation of changing camera lens, this electric power feed unit began to changing the camera lens supply capability.
10. changing camera lens for one kind, is the replacing camera lens in the lens exchange type camera system, it is characterized in that, comprising:
Storer, its storage are used for specifying manufacturer's identification code of the manufacturer of above-mentioned replacing camera lens;
Sensing element, it reads above-mentioned manufacturer identification code from above-mentioned storer;
Transmitting element, it sends to above-mentioned camera body from manufacturer's identification code that above-mentioned storer is read.
11. the control method of a camera is the control method that the camera of the replacing camera lens that comprises CPU releasably is installed, and it is characterized in that, comprising:
The installation that detects above-mentioned replacing camera lens begins, and supplies with the step of changing the reset signal of the CPU in the camera lens at this;
The installation that detects above-mentioned replacing camera lens closes to an end, and beginning is to the step of above-mentioned CPU supply capability;
Detect the installation of above-mentioned replacing camera lens, remove the step of the reset signal of supplying with to above-mentioned CPU;
Communicate with above-mentioned replacing camera lens, receive the step of manufacturer's identification code of changing camera lens from changing the camera lens side joint; With
Pre-prepd a plurality of manufacturers identification code in manufacturer's identification code of above-mentioned reception and the above-mentioned camera is compared, judge whether any one consistent step with it.
12. the control method of camera according to claim 11 is characterized in that,
Also comprise: under any one the consistent situation in manufacturer's identification code of above-mentioned reception and the above-mentioned a plurality of manufacturers identification codes, carry out the step of ensuing camera action.
13. the control method of camera according to claim 11 is characterized in that,
Also comprise: under manufacturer's identification code and any one all inconsistent situation in above-mentioned a plurality of manufacturers identification code of above-mentioned reception, carry out the step of alerts action.
14. control method of camera according to claim 11 is characterized in that,
Also comprise: under manufacturer's identification code and any one all inconsistent situation in above-mentioned a plurality of manufacturers identification code of above-mentioned reception, stop the step of camera action.
15. the control method of a camera is the control method that the camera of the replacing camera lens that comprises CPU releasably is installed, and it is characterized in that, comprising:
The installation from above-mentioned replacing camera lens begin till the installation during in, beginning is to the step of above-mentioned CPU supply capability;
After the installation of above-mentioned replacing camera lens, communicate with changing camera lens, receive the step of manufacturer's identification code of changing camera lens from changing the camera lens side joint;
Manufacturer's identification code of judging above-mentioned reception whether with above-mentioned camera in any one consistent step in pre-prepd a plurality of manufacturers identification code; With
Manufacturer's identification code of above-mentioned reception and above-mentioned a plurality of manufacturers identification code are checked, judge to change camera lens whether with the matched step of camera.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2003104487 | 2003-04-08 | ||
| JP104487/2003 | 2003-04-08 | ||
| JP166886/2003 | 2003-06-11 |
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| CNB2004800076429A Expired - Fee Related CN100428048C (en) | 2003-04-08 | 2004-04-08 | Lens exchange type camera system |
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