JPH0833574B2 - Camera system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a camera system that stores shooting data for each shooting frame.

(Prior Art) Various camera systems have been proposed in the past that store shooting data such as shooting date, shutter speed, and aperture value for each shooting frame.

(Problems to be solved by the invention) However, when it is attempted to store the unique data of the used interchangeable lens together with the shooting data in the non-volatile memory in the camera body for each shooting frame, for example, 50 m
For single focus lenses like m.F1.8, focal length 50mm
And a memory area of 2 bytes for storing the open F value F1.8, and for a zoom lens such as 35-105 mm.F3.3-4, a memory area of 4 bytes.
For example, a zoom lens such as 200-400 mm.F4 requires a memory area of 3 bytes, so a large memory area is required for each shooting frame, and the number of shooting frames that can be stored in the nonvolatile memory is large. There was a problem that it would decrease.

The present invention has been made in view of such a conventional problem, and by reducing the memory area required for each shooting frame, the shooting data and the data of the used camera accessory are limited. It is an object of the present invention to provide a camera system capable of storing a larger number of frames in a region.

(Means for Solving Problems) The gist of the present invention for achieving such an object is to provide a camera system that stores shooting data for each shooting frame, in which data of a mounted camera accessory (interchangeable lens 20) is stored in the camera. Information transmission means (connecting means 41) for reading into the system, and unique data of the camera accessory and data including the identification data of the camera accessory corresponding to the unique data and representing a smaller amount of information than the unique data as one set. Only the storage means (nonvolatile memory 15) for storing the set for a plurality of camera accessories and the identification data of the attached camera accessories,
A camera system is characterized by comprising a storage control unit (control unit of the CPU 11) which stores the image data together with the image data in the memory unit in association with an image taking or winding operation of the camera.

(Operation) In the above camera system, a data set including the unique data of the camera accessory and the identification data is stored in the storage unit (nonvolatile memory 15) for the plurality of camera accessories (interchangeable lens 20). When storing the shooting data in the storage means in association with the shooting or winding operation of the camera, the storage control means (CPU11
The control unit) stores only the identification data of the attached camera accessory in the storage unit together with the photographing data.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

 1 to 6 show an embodiment of the present invention.

FIG. 1 shows a camera system according to an embodiment. This camera system includes a camera body 10, an interchangeable lens 20 as a camera accessory, and a data bag 30.
It consists of and.

The camera body 10 includes a CPU 11, a shooting information setting unit 12 that sends shooting data such as a shutter speed value, an aperture value, a film sensitivity value, and a photometric value to the CPU 11, and a display 13 that displays a shutter speed value of the camera. It has a drive unit 14 for driving a shutter, film winding, and the like, a non-volatile memory 15, and the like.

The non-volatile memory 15 stores a plurality of data sets each including a focal length code and an open F-number code, which are unique data of a lens, and an identification code of the lens, and also has a shooting date, a shutter speed. A storage unit that stores shooting information such as a value and an aperture value is configured. In the present embodiment, the non-volatile memory 15 stores the identification code and the shooting information for each shooting frame.

The interchangeable lens 20 is provided with a CPU 21, and information can be transmitted from the CPU 21 to the CPU 11 of the camera body 10 via a connection means 41 as an information transmission means.

The data back 30 carries out timing operation, display control, etc.
CPU31 and display 32 with display and imprinting functions
And a keyboard 33 for setting commands. Information can be transmitted between the CPU 31 and the CPU 11 via a connecting means 42 as an information transmitting means.

The CPU 21 of the interchangeable lens 20 contains information such as a focal length code and an open F value code, which are unique data thereof, and an identification code as identification data indicating the type of lens.

The CPU 11 in the camera body 10 can read the information on the interchangeable lens 20 side by serial transfer. Although not shown in the figure, the CPU 11 reads the information on the interchangeable lens 20 side by serial transfer via the connection means 41, and controls other controls, ROM (program memory) and RAM ( A storage unit including a data memory) and an input / output unit are provided. The storage control unit described later is configured by the control unit of the CPU 11. The photographing data set by the photographing information setting unit 12 is read by the control unit in the CPU 11, and the photographing data read by the control unit is stored in the non-volatile memory 15 for each frame. .

The ROM in the CPU 21 in the lens stores one of the data shown in Table 1 according to the focal length and the open F value of the lens.

Tables 2 to 4 shown below are stored in the ROM in the CPU 11 inside the camera.

Table 1 is a list showing the lens names indicating the types of lenses and their identification codes. The identification code is represented by 8-bit data. For example, a lens with a focal length of 50 mm and an open F value of F1.8 has an identification code of 01 (hexadecimal notation, and this display is indicated by (H) below)
Zune lens with 35 ~ 105mm, open F value F3.3 ~ 4 is 06 (H)
It is displayed with the respective identification code.

Table 2 is a code table showing the focal length of the lens. For example, a focal length of 20 mm is 01101000 (in hexadecimal display
68) code, focal length 180mm is displayed with 10110100 code (B4 in hexadecimal notation) respectively.

Table 3 is a code table showing the aperture value of the lens. For example, aperture value F1.4 is 00010000 (10 in hexadecimal display)
, The aperture value F11 is displayed as a code of 01110000 (70 in hexadecimal notation).

Table 4 is a code table showing shutter speed values. For example, a shutter speed value 60 indicating 1/60 seconds is displayed by a code of 01100000, and a shutter speed value 250 indicating 1/250 seconds is displayed by a code of 10000000.

FIG. 2 shows a focal length code and an open F-number code which are the unique data of the lens (in the following description, Table 3 above).
This corresponds to the aperture value code of the lens indicated by. ) And the lens identification code corresponding to the unique data are set as one set, and five sets of data are stored in the memory table of the non-volatile memory 15. Each address is non-volatile memory 15
The memory areas for 1 byte of the memory table are shown.

At each address 000,002,0004,006,008, the lens identification code shown in Table 1 is stored.
The most significant bit of 002,0004,006 stores 0 indicating a single lens or 1 indicating a zoom lens. Further, it is possible to add and store new identification codes which are not stored in the addresses 000, 002, 0004, 006, 008, in every other address from the address 00A.

That is, at address 000, the focal length is 50 mm and the open F value is F.
The identification code of 01 (H) indicating the 1.8 lens is the address 0
02 shows a lens with a focal length of 28 mm and an open F value of F2.8 09
The (H) identification code has a focal length of 35 to 1 at address 004.
06 (H) showing a zoom lens of 05mm, open F value F3.3-4
Identification code and the information of the most significant bit 1 indicating the zoom lens, and the address 006 has a focal length of 135 mm, open F value F
The identification code of 06 (H) indicating the 2.8 lens and the information of the most significant bit 1 are stored.

For each address 001, 003, 005, 007, 009, each address 00
Reference address information for referring to the focal length code of the lens and the open F value code indicated by the identification code stored in 0, 002, 0004, 006, 008 are stored.
Further, from the address 009, every other address, it is possible to additionally store a new identification code which is not stored in the above addresses 001, 003, 005, 007, 009.

That is, the reference address information 40 (H) indicating the address 040 is set in the address 001, and the address 042 is set in the address 003.
The same information 42 (H) indicating that
The same information 44 (H) representing 44, the same information 48 (H) representing address 048 are stored in address 007, and the same information 4A (H) representing address 04A is stored in address 009.

The focal length codes shown in Table 2 above are stored in the addresses 040,042,044,046,04A, and the addresses 041,043,
The open F value codes shown in Table 3 are stored in 045, 047, 049, 04B.

The address 040 is 88 (H), which indicates the focal length code 10001000 (focal length 50 mm) of the lens indicated by the identification code 01 of the address 000, and the address 041 is the opening F of the lens.
18 (H) representing the value code 00011000 (F1.8) is stored respectively.

At address 042, 74 (H) representing the focal length code 01110100 (focal length 28 mm) of the lens indicated by the identification code 09 at address 002, and at address 043, the lens open F
30 (H) representing the value code 00110000 (F2.8) is stored respectively.

In the 4-byte memory area of addresses 044 to 047, the unique data of the zoom lens indicated by the identification code 09 of address 004 is stored. Ie address
At 044, 7C (H) representing one of the two focal lengths, 01110100 (focal length 35 mm), and at address 046, the other focal length code 10100000 (focal length 1
A2 (H) representing 05 mm) is one of the two open F values at address 045, the open F value code 00111000 (F3.
38 (H) indicating 3) and 40 (H) indicating the other open F value code 01000000 (F4.0) are stored at address 047.

Focal length code 10101010 (focal length 135 mm) of lens indicated by identification code 03 of address 006 in address 048
Is stored in the address 049, and 30 (H) representing the open F value code 00110000 (F2.8) of the lens is stored at address 049.

Focal length code 11000110 (focal length 300 mm) of the lens indicated by identification code 0B of address 008 at address 04A
Is stored in the address 04B, and 30 (H) is stored in the address 04B, which represents the open F value code 00110000 (F2.8) of the lens.

Further, at every other address starting from the address 04C, it is possible to sequentially store the focal length code of the lens indicated by the new identification code additionally stored, and at every other address starting from the address 04D. The open F value code of the lens indicated by the new identification code can be sequentially stored in the address.

As shown in FIG. 3, the control unit (not shown) in the CPU 11 of the camera body 10 includes the nonvolatile memory 15
In the memory area of the memory table starting from address 100, storage control means for storing the shooting data and the identification code of the lens used for each shooting frame in order from the first frame is included. Here, it goes without saying that the timing at which the storage control unit stores the photographing data and the identification code of the used lens may be related to the release operation, the winding operation, or other photographing operation. The storage control means stores the photographed data for each photographed frame in the non-volatile memory 15 in order to store 6
A memory area for bytes is used, of which a memory area of 5 bytes is used for shooting data, and a memory area of the remaining 1 byte is used for a lens identification code.

In this embodiment, the date, shutter speed value and aperture value are stored as the photographing data.

Further, the storage control means includes an attached interchangeable lens.
The identification data or unique data of 20 is compared with the identification data or unique data of each data set already stored in the non-volatile memory 15 (storage means), and the identification data or unique data of the mounted interchangeable lens 20 is It includes a comparison means for newly storing in the nonvolatile memory 15 a set of data consisting of identification data and unique data of the mounted interchangeable lens 20 when it is not stored in the nonvolatile memory 15.

As shown in FIG. 4, the indicator 32 of the data back 30 is shown.
Includes a display unit 32a for externally displaying shooting information (shooting data and lens identification code used), setting of imprinting mode, setting of year / month / day / hour / minute / second, setting of whether or not to imprint. A keyboard 32b provided with various switches for performing the above and the like is provided. The display unit 32a has 1
The number of frames to be shot is displayed on the second line, the shooting date is displayed on the second line, the shutter speed value and aperture value are displayed on the third line, and the information of the lens used is displayed on the fourth line. . The switch labeled RECALL on the keyboard 32b is a switch for outputting shooting data to the display 32, and has a function of displaying the contents of the stored shooting data one frame at a time.

 The operation will be described below.

(1) First, FIG. 5 shows an overall operation in which the storage control means stores the shooting information for each shooting frame in a memory area of the nonvolatile memory 15 starting from address 100. It will be described based on a flowchart.

As shown in FIG. 5, when the power of the camera body 10 is turned on (# 1), the CPU 11 of the camera body 10 sends the photographing data such as the film sensitivity, the shutter speed value and the photographing mode set by the photographing information setting unit 12. Input to (# 2), and the light intensity of the subject is measured by a light receiving element (not shown) (# 3), and the CPU 11 calculates the exposure based on these (# 4), and the result is displayed on the camera body 10. Displayed on device 13 (#
5).

Next, the CPU 11 communicates with the CPU 21 of the interchangeable lens 20 to which the CPU 11 is attached, and the data (lens identification code, focal length code and open F value code) of the interchangeable lens 20 is read via the connecting means 21 (# 6). .

Then, the comparing means compares the identification code of the mounted interchangeable lens 20 with the contents stored in the memory table of the nonvolatile memory 15 (# 7) to determine whether or not the lens is an unregistered lens ( # 8) If the mounted lens is not registered, the identification code, the focal length, and the open F value code are additionally stored in the memory table (# 9).
Then, the state of the release switch is read, and when the release switch is off, the above series of operations are repeated, and when the release switch is on, the process proceeds to the release routine (# 10).

In the release routine, first the mirror up operation is started (# 11), and the completion of the mirror up operation is waited (# 12).
After that, the data of the photographing year, month, day, hour, minute, second from the time generator (not shown) on the data back 30 side is temporarily stored (# 1
3). Next, the shutter front curtain is run (# 14), and the set or calculated shutter time is started (# 15).
It is determined whether or not this timing is finished (# 16), and the shutter rear curtain is started when this timing is finished (# 1).
7).

Then, when the traveling of the shutter rear curtain is completed (# 18),
Start film winding operation (# 19). In tandem with the film winding operation, the shooting date, the shutter speed value code, the aperture value code, and the lens identification code, which are shooting data, are stored in the memory table of the non-volatile memory 15 as shown in FIG. (# 20).

When the completion of film winding is detected (# 2
1) Stop the film winding operation (# 22) and start again (#
Go to 2).

As a result of such an operation, as shown in FIG. 3, the image data of the first frame is stored in the memory area of the memory table of the nonvolatile memory 15 from address 100 to 105, and the image data of the second frame is stored in the memory table. Address 106
To 10B in the memory area, and the image data of the third frame is stored in the memory area from address 10C to 111 in the same memory table at (# 20).

That is, as the first frame of shooting data, September 25, 1986
Date data representing the day is BCD code and addresses 100 to 10
2, code 70 (H) representing the shutter speed value of 1/125 second
(See Table 4 above) at address 103, code 50 (H) representing the aperture value of F5.6 (See Table 3 above)
Is stored at address 104, and the lens identification code 01 (H) (see Table 1 above) representing an interchangeable lens of 50 mm, F1.8 is stored at address 105.

As the shooting data for the second frame, the date data representing September 26, 1986, is the BCD code and addresses 106 to 108.
, Code 80 (H) that indicates the shutter speed value of 1/250 seconds
At address 109, code 70 (H) indicating the aperture value of F11
Is stored at address 10A, and a lens identification code 09 (H) representing an interchangeable lens of 28 mm, F2.8 is stored at address 10B.

As the shooting data for the third frame, the date data representing September 26, 1986 is BCD code at addresses 10C to 10E, and is 1/5.
Code 90 (H) representing the shutter speed value of 00 seconds is at address 10F, code 40 (H) representing the aperture value of F4 is at address 110, and lens identification code 0B representing an interchangeable lens of 300mm, F2.8. (H) is stored in each address 111.

The image data of the fourth frame is stored in the same manner as above using a 6-byte memory area from address 112. However, as shown in FIG. In 3FE and 3FF, data representing an address 112 for storing the shooting data of the next frame is stored.

As is clear from the above description, when the shooting data is stored for each shooting frame, the memory area required for storing the lens identification code may be 1 byte, and therefore the memory area required for each shooting frame. It is possible to store data for a large number of frames in the limited memory table of the non-volatile memory 15.

(2) Next, from (# 7) of the flowchart shown in FIG.
An operation for additionally storing unregistered lens data in the memory table of the non-volatile memory 15 will be described with reference to the flowchart of FIG. 6 showing (# 9) in detail.

After the data of the attached interchangeable lens 20 is read to the camera body 10 side by (# 6), the address of the memory table of the non-volatile memory 15 storing the identification code of each interchangeable lens is set (# 101). . Here, the address 000 of the memory table is set first, and the content of the address 000 is compared with the identification code of the mounted interchangeable lens 20 (# 102). It is determined whether or not they match (# 103). If they match, the above (# 1
If it does not match, the address of the memory table is incremented by 2 (# 10).
4) Determine whether or not there is data at this incremented address, that is, whether or not the data in the memory table is over (# 105), and if the data is not over, return to (# 102) and return to the above. Repeat the operation of.

If it is determined that the data has ended, first, the identification code of the attached interchangeable lens 20 is stored in the incremented address (# 106), and then the attached interchangeable lens 20 is used as the zoom lens. Whether it is a single lens or not (# 107), in the case of a zoom lens, the zoom lens identification flag 1 is set in the most significant bit of the memory area of the address where the identification code is newly stored (# 108),
If the zoom lens is not a zoom lens, a single lens identification flag 0 is set in the most significant bit of the memory area (not shown).

Next, the addresses of the memory table for storing the focal length code and the open F value code of the mounted interchangeable lens 20 are set (# 109), and the focal length code and the open F value code are set in the memory area of each address. (# 110), the reference address information for referring to the address of the memory area in which the focal length code and the open F value code are stored, and the identification code is newly added in (# 106). The data is stored in the address of the memory area of the stored address (not shown).

Next, the operation of additionally storing the data of the unregistered lens in the memory table as described above will be specifically described with reference to FIG.

In Fig. 2, there are currently four interchangeable lenses (50mm, F1.8,
28mm, F2.8, 35-105mm, F3.3 ~ 4 and 135mm, F2.8 interchangeable lenses) 4 sets of data are non-volatile memory
It is assumed that it is already stored in 15 memory tables.

Here, when a new 300 mm, F2.8 interchangeable lens is attached to the camera body 10, the CPU 11 performs serial transfer data on the interchangeable lens [interchangeable lens identification code 0B
(H), focal length code C6 (H) and open F value code 30 (H)] are read from the CPU 21.

Next, it is determined whether or not the data of the interchangeable lens is registered in the memory table of the nonvolatile memory 15.
That is, the identification code 0B (H) of the interchangeable lens is sequentially compared with the contents of the addresses 000,002,004,006. Each address 0
01 (H), 09 (H), 06 (H), 03 for 00,002,004,006
(H) is stored, and data matching the identification code 0B (H) is not stored.
0B (H) is newly stored in address 008.

At this time, the identification code 0 of the single lens is stored in the most significant bit of the memory area of the address 008. Also, at address 04A, the focal length code C6 that indicates a focal length of 300 mm is used.
(H), and the code 30 (H) of the open F value representing the open F value F2.8 is stored in the address 04B. Further, reference address information for referring to the code C6 (H) of the focal length is stored in the address 009.

According to the present embodiment, it is possible to additionally store the data of the unregistered lens in the memory table of the non-volatile memory 15 as described above, so that a large number of sets of data for various types of interchangeable lenses can be stored in the memory table. Is not required to be stored in advance, and when using an interchangeable lens in which data is not stored, the camera automatically additionally stores unregistered data by the storage control means. Therefore, in the extreme, when the camera is released, the camera system can operate without storing the data of the interchangeable lens in the memory table of the non-volatile memory 15 at all.

(3) Next, with reference to FIG. 4, the external display of the photographing data of the second frame will be described by taking the photographing data of the second frame stored in the addresses 106 to 10B of the non-volatile memory 15 as an example.

As shown in FIG. 4, the number 2 indicating the second frame is displayed on the first line of the display section 32a of the display 32.

The date data stored in the addresses 106 to 108 is displayed as it is on the second line of the display unit 32a.

Shutter speed value code 80 stored at address 109
(H) and aperture value code 7 stored at address 10A
0 (H) is calculated or exchanged for a commonly used expression using a reference table (not shown), and 1/250 is displayed as the shutter speed value and F11 is displayed as the aperture value on the third line of the display unit 32a. Has been done.

Regarding the display of the type of interchangeable lens used for the second frame, the lens identification code 09 (H) stored at address 10B is stored in the memory table of the non-volatile memory 15 shown in FIG. The lens identification code is checked in order from address 000, and the identification code is 09 (H).
Look for address 002 that has a stored content that matches The identification code 09 (H) is assigned to the address 003 next to the address 002.
Reference address information 42 for referring to the focal length code and the open F value code of the lens is stored. The focal length code 74 (H) is stored in the address 042 indicated by the reference address information 42, and the open F value code 30 (H) is stored in the next address 043.

In this way, the focal length code 74 (H) and the open F-number code 30 (H) corresponding to the identification code 09 (H) are read out, and these two codes are normally used by calculation or by using a reference table (not shown). 28 mm indicating the focal length of the interchangeable lens used and F11 indicating the open F value are displayed on the fourth line of the display unit 32a.

In the above embodiment, the present invention is applied to the interchangeable lens as the camera accessory, and the case where the unique data and the identification data thereof are stored has been described.
As a camera accessory used in camera systems,
For example, the present invention may be applied to a speedlight and the guide number, model name, etc. may be stored.

Further, in the above-described embodiment, the camera body 10 is provided with the non-volatile memory 15 as a storage means, and the non-volatile memory 15 stores the focal length code, the open F value code, the identification code, etc. of the interchangeable lens as the camera accessory. However, it goes without saying that such storage means may be provided on the data back 30 side.

(Effects of the Invention) According to the camera system of the present invention, the storage unit stores a data set including the unique data of the lens and the identification data for one of the plurality of camera accessories, and the photographing or winding operation of the camera. When the shooting data is stored in the storage device in conjunction with, the storage control device stores only the identification data of the mounted camera accessory in the storage device together with the shooting data. The memory area required for each can be reduced, and the shooting data and the data of the used camera accessories can be stored for a larger number of shooting frames in the limited memory area.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a block diagram showing a camera system, FIG. 2 is an explanatory view showing the contents stored in a non-volatile memory, and FIG. Explanatory diagram showing a state of being stored for each frame in the same memory,
4 is a front view of the display used for explaining the display state of the display, FIG. 5 is a flow chart showing the overall operation, and FIG. 6 is a part of the flow chart shown in FIG. It is the flowchart shown in detail. 11 …… CPU of camera body (storage control means) 15 …… Non-volatile memory (storage means) 20 …… Interchangeable lens (camera accessory) 41 …… Connection means (information transmission means)

Claims (2)

[Claims] 1. A camera system for storing photographic data for each photographic frame, an information transmission means for reading data of a mounted camera accessory into the camera system, and a unique data of the camera accessory and the unique data. Storage means for storing a data set for one of a plurality of camera accessories, the data set including the identification data of the camera accessory represented by a smaller amount of information than the unique data; and only the identification data of the attached camera accessories together with the photographing data. A camera system, comprising: a storage control unit that stores in the storage unit each shooting frame in association with a shooting or winding operation of the camera. 2. The storage control means compares the identification data or unique data of the attached camera accessory with the identification data or unique data of each of the data sets already stored in the storage means, and attaches the data. Comparing means for newly storing in the storage means a set of data consisting of identification data of the attached camera accessory and unique data when the identification data or unique data of the camera accessory is not stored in the storage means The camera system according to claim 1, wherein the camera system includes: