JP3945052B2 - Interchangeable lens electronic camera, interchangeable lens unit and camera body - Google Patents

Interchangeable lens electronic camera, interchangeable lens unit and camera body Download PDF

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Publication number
JP3945052B2
JP3945052B2 JP34734998A JP34734998A JP3945052B2 JP 3945052 B2 JP3945052 B2 JP 3945052B2 JP 34734998 A JP34734998 A JP 34734998A JP 34734998 A JP34734998 A JP 34734998A JP 3945052 B2 JP3945052 B2 JP 3945052B2
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Japan
Prior art keywords
lens
signal
interchangeable lens
camera
unit
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Expired - Fee Related
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JP34734998A
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Japanese (ja)
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JP2000175089A (en
Inventor
泉 三宅
充史 三沢
晃治 古林
和也 小田
杉夫 巻島
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富士フイルム株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an interchangeable lens electronic camera , an interchangeable lens unit, and a camera body , and more particularly, to an interchangeable lens electronic camera that can replace the interchangeable lens unit , an interchangeable lens unit that constitutes the electronic camera, and a camera body .
[0002]
[Prior art]
In general, a digital camera converts an optical image into an electronic image signal using an image sensor such as a CCD, and records captured image data on a recording medium. In recent years, in order to meet the need for higher image quality in digital cameras, the number of pixels in CCDs has increased, and models with a larger number of pixels have been commercialized one after another. Therefore, if one year has passed since the release, it will become an old model with a low commercial value.
[0003]
[Problems to be solved by the invention]
By the way, even if the increase in the number of pixels of the image sensor rapidly progresses, the other parts of the camera are not changed much from the technical point of view although there are changes in the design. Therefore, in order to easily cope with the increase in the number of pixels, it is efficient to replace only the imaging unit including the imaging element.
[0004]
Conventionally, a camera in which the lens unit can be exchanged such as a standard lens, a zoom lens, and a wide-angle lens, a camera in which the imaging unit including the imaging element and the lens can be exchanged, and a camera in which the video signal processing system can be exchanged have been proposed. (JP-A-6-315000, JP-A-8-172561, JP-A-10-84523).
However, the camera system described in JP-A-6-315000 is characterized in that a camera unit body having a signal processing / recording unit and a plug-in unit including a lens and an image pickup device such as a CCD can be separated and replaced. However, since the camera unit main body transmits signals only through mechanical imaging, the camera unit main body with a signal processing / recording unit cannot perform processing that matches the characteristics of each plug-in unit. There is.
[0005]
JP-A-8-172561 discloses that the lens unit and the camera body can be separated and exchanged, and the lens unit and the camera body can communicate with each other between the microcomputers and negotiate. Therefore, the separation method including the image sensor in the lens unit cannot be taken.
The digital camera described in Japanese Patent Application Laid-Open No. 10-84523 can separate and replace the imaging unit unit and the IC card unit (signal processing + recording unit), but images many functions such as a power source other than the signal processing unit. The main unit is an image pickup unit, which is not suitable for lens replacement purposes.
[0006]
The present invention has been made in view of such circumstances, and is not limited to the increase in the number of pixels of the image sensor, the driving method, etc., and can be applied to any image sensor, and can easily improve and change the camera performance. An object of the present invention is to provide an interchangeable lens electronic camera , an interchangeable lens unit, and a camera body .
[0007]
[Means for solving the problems]
In order to achieve the above object, an interchangeable lens type electronic camera according to claim 1 of the present application includes a photographing lens, an imaging element on which a subject image is formed via the photographing lens, and a central treatment provided on the camera body side. A non-volatile storage means storing a control program for the apparatus, an interchangeable lens unit having a lens side signal transmitting / receiving means for transmitting and receiving signals to and from the camera body, and a camera body in which the interchangeable lens unit is detachable, Camera-side signal transmission / reception means for transmitting / receiving signals to / from the interchangeable lens unit; and image signals photoelectrically converted by the imaging device are received via the lens-side signal transmission / reception means and camera-side signal transmission / reception means , and the image signals are signaled. processing means for recording on the recording medium after the treatment, through the lens-side signal transmitting and receiving means and the camera-side signal transmitting and receiving means from said storage means A camera body having said central processing unit for controlling at least said processing means based on the control program to be accepted, is characterized in that it consists of. In addition, the interchangeable lens unit includes a driving unit that drives the imaging device and a strobe device as shown in claim 2 of the present application, and the central processing unit controls the driving unit and the strobe device. It is said.
[0008]
In other words, in order to improve the image quality of an image pickup device such as a CCD without incurring costs, the minimum necessary integrated circuit (IC) is mounted on the interchangeable lens unit side, and an expensive central processing unit and image signals are processed. ICs that can be shared, such as processing means, are arranged on the camera body side. At this time, the CCD driving means is mounted on the interchangeable lens unit side so that it can correspond to any CCD developed in the future, and the control method is different, so the control program for the central processing unit is stored. Nonvolatile storage means (ROM) is also mounted on the interchangeable lens unit side. In addition, a strobe device is also mounted on the interchangeable lens unit side in order to cope with lens-related specification changes.
[0009]
By including processing means, a central processing unit, and the like for processing image signals, which are expensive parts, in the camera body, an interchangeable lens unit that can be exchanged at low cost can be designed, and only the latest interchangeable lens unit needs to be developed. Therefore, the design cost can be reduced. Further, if the user replaces only the interchangeable lens unit, the user can obtain an electronic camera with the latest level of pixels.
[0010]
The interchangeable-lens electronic camera according to claim 3 of the present application includes a photographic lens, an image sensor on which a subject image is formed via the photographic lens, a signal processing program corresponding to the image sensor, and a defect inherent to the image sensor. An interchangeable lens unit having non-volatile storage means for storing at least one of information, and a lens side signal transmission / reception means for transmitting / receiving signals to / from the camera body;
A camera body in which the lens unit is detachable, a camera side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, an image signal photoelectrically converted by the imaging device, and the lens side signal transmitting / receiving unit and a camera side signal Receiving via the transmission / reception means, and receiving at least one of the signal processing program read from the storage means and the defect information specific to the image sensor via the lens-side signal transmission / reception means and the camera-side signal transmission / reception means, A camera body having signal processing means for processing the image signal in accordance with at least one of a signal processing program and defect information specific to the image sensor, and recording means for recording the image signal processed by the signal processing means on a recording medium; It is characterized by comprising.
The interchangeable-lens electronic camera according to claim 4 of the present application stores a photographic lens, an image sensor on which a subject image is formed via the photographic lens, and a control program for a central treatment device provided on the camera body side. An interchangeable lens unit having a non-volatile storage means, a lens-side signal transmission / reception means for transmitting / receiving signals to / from the camera body, and a camera body to which the interchangeable lens unit is detachable, wherein Camera-side signal transmission / reception means for transmitting and receiving, and image signals photoelectrically converted by the imaging device are received via the lens-side signal transmission / reception means and camera-side signal transmission / reception means, and the image signals are processed and then recorded on a recording medium. And a camera body having a processing means.
An interchangeable lens type electronic camera according to claim 5 of the present application includes an imaging lens, an imaging element on which a subject image is formed via the imaging lens, and a lens-side signal transmission / reception unit that transmits / receives a signal to / from the camera body. A camera unit in which the interchangeable lens unit is detachable with a lens unit, a camera-side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, and an image signal photoelectrically converted by the image sensor. And a camera body having processing means for receiving the image signal and processing the image signal and then recording the image signal on a recording medium. The lens side signal transmitting / receiving means It has an output terminal.
An interchangeable lens type electronic camera according to claim 6 of the present application includes an imaging lens, an imaging element on which a subject image is formed via the imaging lens, and a lens side signal transmission / reception unit that transmits / receives a signal to / from the camera body. A camera unit in which the interchangeable lens unit is detachable with a lens unit, a camera-side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, and an image signal photoelectrically converted by the image sensor. And a camera body having processing means for receiving the image signal and processing the image signal and then recording the image signal on a recording medium. The camera side signal transmitting / receiving means that it is characterized by having an output terminal.
An interchangeable-lens electronic camera according to claim 7 is an image sensor having a small light receiving area, a telephoto lens having a short focal distance relative to the image sensor, and lens-side signal transmitting / receiving means for transmitting / receiving signals to / from the camera body. A first interchangeable lens unit suitable for telephoto shooting, an image sensor with a large light receiving area and a good S / N, a lens with a large open F value, and a lens-side signal transmitting / receiving unit that transmits and receives signals to and from the camera body. A second interchangeable lens unit suitable for high-sensitivity photography, and a camera body in which at least the first and second interchangeable lens units are detachable, and transmits / receives signals to / from the interchangeable lens unit. And a camera body that can be combined with the first and second interchangeable lens units.
The interchangeable-lens electronic camera according to claim 8 of the present application stores a first photographing lens, a color image pickup device on which a subject image is formed through the first photographing lens, and a signal processing program for color. First non-volatile storage means, first interchangeable lens unit for color photography having lens side signal transmission / reception means for transmitting / receiving signals to / from the camera body, second photographic lens, and second photographic lens A monochrome imaging device on which a subject image is formed, a non-volatile second storage means storing a monochrome signal processing program, and a lens side signal transmission / reception means for transmitting / receiving a signal to / from the camera body. And a camera body in which at least the first and second interchangeable lens units are detachable, and which transmits and receives signals to and from the interchangeable lens unit. Having a side signal transmitting and receiving means, the first, and a camera body which can be combined with the second interchangeable lens unit, characterized in that it consists of.
[0011]
The invention according to claim 9 of the present application accepts an image signal from the interchangeable lens unit and accepts a control program, processes the image signal based on the control program, and records the image signal on a recording medium. An interchangeable lens unit, a photographic lens, an imaging element on which a subject image is formed via the photographic lens, a non-volatile storage means for storing the control program, and a lens for transmitting and receiving signals to and from the camera body And a side signal transmission / reception means.
[0012]
The invention according to claim 10 of the present application receives an image signal from the interchangeable lens unit, and receives at least one of a signal processing program and defect information specific to the image sensor, and the defect information specific to the signal processing program and the image sensor. An interchangeable lens unit that is detachable from a camera body that processes the image signal according to at least one of them and then records the image signal on a recording medium, wherein the subject image is formed through the photographing lens. A non-volatile storage unit that stores at least one of an element, the signal processing program corresponding to the image sensor and defect information unique to the image sensor, and a lens-side signal transmission / reception unit that transmits and receives signals to and from the camera body. It is characterized by having .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of an interchangeable lens electronic camera , an interchangeable lens unit, and a camera body according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a block diagram showing a first embodiment of an interchangeable lens electronic camera according to the present invention. As shown in FIG. 1, the interchangeable lens electronic camera 10 includes an interchangeable lens unit 30 and a camera body 40 to which the interchangeable lens unit 30 is detachable.
[0014]
The interchangeable lens unit 30 includes a photographing lens 12, a diaphragm 14, a solid-state imaging device (CCD) 16, an analog processing circuit 18, a timing generator 20 for driving a CCD, an electronic volume circuit 22 having a D / A conversion unit, and a light control sensor 24. The flash device 26 has an EEPROM 27, an EEPROM 27, a ROM 28, and a lens side connector 29.
[0015]
On the other hand, the camera body 40 mainly includes a signal processing circuit 32, a central processing unit (MPU: microcomputer processing unit) 34, a card connector 38 to which a memory card 42 is attached, and a body side connector 39.
By connecting the lens side connector 29 of the interchangeable lens unit 30 to the main body side connector 39, both are mechanically coupled, and are electrically connected so that signals can be transmitted and received between them. Although not shown in FIG. 1, an optical finder is provided on the interchangeable lens unit 30 side, and a liquid crystal monitor, a power supply unit, an operation unit (release switch, mode selection switch, upper / lower) are provided on the camera body 40 side. Various keys such as a down key, a left / right key, an execution key, and a switch are provided.
[0016]
Now, the EEPROM 27 built in the interchangeable lens unit 30 stores various data necessary for control of the image pickup unit and image signal processing, such as adjustment values unique to the interchangeable lens unit 30. Specifically, information on the CCD 16 such as defect information, number of pixels, color filter array, color balance, sensitivity, and other CCD characteristic data, lens characteristics of the photographing lens 12 (shading, distortion, etc.), presence / absence of a strobe, etc. are stored in the EEPROM 27. Stored.
[0017]
On the other hand, the ROM 28 stores a control program indicating a control method for the CCD 16, the timing generator 20 for driving the CCD, the strobe device 26, and a processing method in the signal processing circuit 32.
In the case of a camera capable of exchanging the interchangeable lens unit 30 such as the interchangeable lens type electronic camera 10 of this example, it is necessary to install a program and data defining a control method of the interchangeable lens unit on the interchangeable lens unit 30 side. Accordingly, the interchangeable lens unit 30 is provided with storage means such as the EEPROM 27 and the ROM 28 as shown in FIG. The storage means may be anything as long as it is non-volatile, and the number of storage means is not limited to this embodiment.
[0018]
The lens-interchangeable electronic camera 10 having the above configuration operates as follows.
By connecting the interchangeable lens unit 30 and the camera body 40 via the connectors 29 and 39, both can transmit and receive signals to and from each other.
The MPU 34 loads a control program from the ROM 28 of the interchangeable lens unit 30, stores it in the built-in DRAM 36, reads various data necessary for adjustment of the interchangeable lens unit 30 from the EEPROM 27, and stores it in the DRAM 36.
[0019]
The MPU 34 controls and controls each circuit of the interchangeable lens electronic camera 10 based on the control program and data stored in the DRAM 36. The MPU 34 controls the aperture 14, the timing generator 20, the electronic volume circuit 22, and the strobe of the interchangeable lens unit 30. In addition to controlling the interchangeable lens unit 30 such as the device 26, the signal processing circuit 32 performs control so that appropriate signal processing corresponding to information unique to the interchangeable lens unit 30 is performed, and by an input signal from the release switch. Control for photographing, read / write control of the memory card 42, and the like are performed.
[0020]
That is, when the release switch is pressed, the subject image formed on the light receiving surface of the CCD 16 through the photographing lens 12 and the diaphragm 14 is photoelectrically converted and sequentially read out as an image signal. This image signal is added to an analog processing circuit 18 including a gain control (GC) circuit, a color balance adjustment circuit, an A / D converter, and the like. After undergoing predetermined processing, the image signal is converted into a digital signal. The signal is transferred to the signal processing circuit 32 of the camera body 40 via 39.
[0021]
The signal processing circuit 32 includes a luminance signal generation circuit, a color difference signal generation circuit, a gamma correction circuit, a compression / decompression circuit, a memory controller, and the like, and image data processed by these circuits is a memory attached to the card connector 38. Recorded on the card 42. The medium for recording image data can be various forms such as smart media, PC card, flash memory card, IC card, magneto-optical disk, etc., and is not limited to a removable external recording medium. A built-in internal memory may be used.
[0022]
The image data stored in the memory card 42 can be read out under the control of the MPU 34. The image data read out from the memory card 42 is decompressed by the signal processing circuit 32 and then output to a liquid crystal monitor (not shown). At the same time, it can be output to another external device in a predetermined signal form such as a video signal via the external output terminal.
[0023]
It is also possible to display the video (movie-through image) captured by the camera before giving a shooting start instruction with the release switch on the LCD monitor or take it out as a video signal from the external output terminal. Can determine the angle of view while checking the movie image displayed on the LCD monitor.
By unifying the interface specifications of the interchangeable lens unit 30 and the camera body 40 in this way, the interchangeable lens unit can be freely replaced as long as the interface portion matches. The connectors 29 and 39 have a number of input / output terminals for expansion, so that future CCDs can be accommodated by changing the software.
[0024]
FIG. 2 is a block diagram showing a second embodiment of the interchangeable lens electronic camera according to the present invention. In addition, the same code | symbol is attached | subjected to the part which is common in FIG. 1, and the detailed description is abbreviate | omitted.
The interchangeable lens electronic camera 50 shown in FIG. 2 shows a case where a zoom interchangeable lens unit 60 is applied to the camera body 40 shown in FIG. That is, the interchangeable lens unit 60 is equipped with a zoom lens 62. In this embodiment, zooming and focusing of the zoom lens 62 can also be controlled by a signal from the control port from the MPU 34.
[0025]
FIG. 3 is a block diagram showing a third embodiment of the interchangeable lens electronic camera according to the present invention. As shown in the figure, the interchangeable lens electronic camera 70 includes an interchangeable lens unit 80 and a camera body 90 to which the interchangeable lens unit 80 is detachable.
The interchangeable lens unit 80 includes a zoom lens 71, a CCD 72, an analog processing circuit 73, an original oscillator 74, a CCD driving circuit 75, a lens MPU 76, a memory 77, drivers 78 and 79, and a lens side connector 81. On the other hand, the camera main body 90 includes a signal processing circuit 82, a memory controller 83, an image memory 84, a recording memory 85, a camera MPU 86, a memory 87, a power supply 88, a user interface 89, and a camera side connector 91.
[0026]
By connecting the lens side connector 81 of the interchangeable lens unit 80 to the main body side connector 91, both are mechanically coupled and electrically connected to enable transmission and reception of signals between them.
An original oscillator 74 is mounted on the interchangeable lens unit 80 side, and the original oscillator 74 outputs a clock pulse to a CCD drive circuit 75 that outputs a drive pulse for driving the CCD 72. Thereby, the CCD drive circuit 75 can output drive pulses suitable for the number of pixels of the CCD 72 and the like. Although not shown in FIG. 3, the clock pulse from the original oscillator 74 is also used when the output of the CCD 72 is CDS clamped and sampled and held.
[0027]
Further, the clock pulse from the original oscillator 74 is applied to the camera body 90 via the connectors 81 and 91, thereby synchronizing the signal processing between the interchangeable lens unit 80 and the camera body 90.
On the other hand, a power supply 88 is mounted on the camera body 90 side, and this power supply 88 can supply power to the interchangeable lens unit 80 via connectors 81 and 91.
[0028]
A nonvolatile memory 77 built in the interchangeable lens unit 30 stores CCD characteristic data such as defect information, the number of pixels, a color filter array, a color balance, and sensitivity of the CCD 72 mounted on the interchangeable lens unit 80. In addition, various image processing data indicating lens characteristics such as shading and distortion of the zoom lens 71 are stored. In addition, an optimal imaging processing program for the CCD 72 is stored.
[0029]
Next, the operation of the lens-interchangeable electronic camera 70 having the above configuration will be described with reference to the flowchart shown in FIG.
First, the interchangeable lens unit 80 and the camera body 90 are coupled via the connectors 81 and 91 (step S10). As a result, power is supplied from the power supply 88 of the camera body 90 to the interchangeable lens unit 80, and the above-described imaging processing data and imaging processing program from the memory 77 in the interchangeable lens unit 80 are controlled by the lens MPU 76. The program is transferred to the camera MPU 86 and loaded into a predetermined area of the camera body 90 (step S12).
[0030]
Here, when the user presses the shutter for shooting, the camera MPU 86 detects a shooting command via the user interface unit 89, and issues a drive command for focusing the zoom lens 71 to the lens MPU 76. Accordingly, the lens MPU 76 causes the zoom lens 71 to perform a focus operation via the driver 79. When the user operates the zoom button or the like before photographing, the camera MPU 86 issues a zoom drive command for the zoom lens 71 to the lens MPU 76 as described above, and the lens MPU 76 passes through the drivers 78 and 79 and the zoom lens 71 Operate the zoom.
[0031]
The subject image formed on the light receiving surface of the CCD 72 through the zoom lens 71 during the shutter release is photoelectrically converted here and sequentially read out as an image signal. This image signal is added to an analog processing circuit 73 including a gain control circuit, a color balance adjustment circuit, an A / D converter, and the like. After undergoing predetermined processing, the image signal is converted into a digital signal and passed through connectors 81 and 91. Is transferred to the signal processing circuit 82 of the camera body 90 (step S14).
[0032]
The signal processing circuit 82 includes a luminance signal generation circuit, a color difference signal generation circuit, a gamma correction circuit, a compression / decompression circuit, and the like, and stores image data (luminance signal Y and chroma signal C) processed according to the imaging processing program in a memory. Once stored in the image memory 84 via the controller 83, the YC signal stored in the image memory 84 is read out via the memory controller, compressed in a predetermined format, and then recorded again via the memory controller 83. Record in the memory 85 (step S16).
[0033]
If a processing program for image compression is also stored in the memory 77, it is possible to easily cope with compression processing of various standards and new standards.
In addition, by installing lenses, image sensors, and information and processing programs unique to these lenses in the interchangeable lens unit, a great number of variations of the interchangeable lens unit are possible. For example, photographing as shown in the following example Is possible.
[0034]
(1) Telephoto shooting If an image sensor with a small light receiving area is used, the focal length of the telephoto lens can be relatively short, and the lens becomes compact.
(2) High-sensitivity shooting High-sensitivity shooting is achieved by combining a high-sensitivity, S / N imaging device with a lens with a large open F value, with a large light-receiving area even at the expense of sensitivity and size. Becomes easier.
[0035]
(3) Black-and-white photography By using monochrome for the light receiving element and having a monochrome signal processing program, it is possible to shoot exclusively for monochrome.
(4) Negative shooting By having a signal processing program such as negative / positive reversal or gamma correction for negative film, a dedicated interchangeable lens unit for shooting negative film can be obtained.
[0036]
Furthermore, in the above description, a camera that records still images has been described as an example, but the present invention can also be applied to a camera that records moving images, such as a video camera.
[0037]
【The invention's effect】
As described above, according to the present invention, the interchangeable lens unit is equipped with a lens, an image sensor, and information and processing programs unique to the lens, the image sensor, and is not limited to the increase in the number of pixels of the image sensor or the driving method. In addition, it can be applied to any imaging device, and the camera performance can be improved and changed easily.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a first embodiment of an interchangeable lens electronic camera according to the present invention. FIG. 2 is a block diagram showing a second embodiment of the interchangeable lens electronic camera according to the present invention. 3 is a block diagram showing a third embodiment of the interchangeable lens electronic camera according to the present invention. FIG. 4 is a flowchart used to explain the operation of the interchangeable lens electronic camera shown in FIG. ]
10, 50, 70 ... interchangeable lens electronic camera 12 ... photographic lens 16, 72 ... image sensor (CCD)
18, 73 ... Analog processing circuit 20 ... Timing generator 22 ... Electronic volume circuit 26 ... Strobe device 27 ... EEPROM
28 ... ROM
29, 39, 81, 91 ... Connector 30, 60, 80 ... Interchangeable lens unit 32, 82 ... Signal processing circuit 34 ... MPU
36 ... DRAM
38 ... Card connector 40, 90 ... Camera body 42 ... Memory card 62, 71 ... Zoom lens 74 ... Original oscillator 75 ... CCD drive circuit 76 ... Lens MPU
77, 87 ... Memory 85 ... Recording memory 86 ... Camera MPU
88 ... Power supply

Claims (10)

  1. A photographic lens, an image sensor on which a subject image is formed via the photographic lens, a non-volatile storage means storing a control program for a central treatment device provided on the camera body side, a camera body and a signal An interchangeable lens unit having lens side signal transmitting / receiving means for transmitting and receiving
    A camera body to which the interchangeable lens unit is detachable, a camera side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, an image signal photoelectrically converted by the imaging element, and the lens side signal transmitting / receiving unit and the camera side Processing means for receiving the signal through the signal transmission / reception means, processing the image signal and then recording it on a recording medium; and the control program received from the storage means via the lens-side signal transmission / reception means and the camera-side signal transmission / reception means. A camera body having at least the central processing unit for controlling the processing means based on
    An interchangeable lens electronic camera.
  2.   The interchangeable lens unit according to claim 1, wherein the interchangeable lens unit includes a driving unit that drives the imaging device and a strobe device, and the central processing unit controls the driving unit and the strobe device. camera.
  3. Non-volatile storage for storing at least one of a photographing lens, an image sensor on which a subject image is formed via the photographing lens, a signal processing program corresponding to the image sensor, and defect information unique to the image sensor An interchangeable lens unit having means and a lens-side signal transmitting / receiving means for transmitting and receiving signals to and from the camera body;
    A camera body in which the lens unit is detachable, a camera side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, an image signal photoelectrically converted by the imaging device, and the lens side signal transmitting / receiving unit and a camera side signal Receiving via the transmission / reception means, and receiving at least one of the signal processing program read from the storage means and the defect information specific to the image sensor via the lens-side signal transmission / reception means and the camera-side signal transmission / reception means, A camera body having signal processing means for processing the image signal in accordance with at least one of a signal processing program and defect information specific to the image sensor, and recording means for recording the image signal processed by the signal processing means on a recording medium; ,
    An interchangeable lens electronic camera.
  4. A photographic lens, an image sensor on which a subject image is formed via the photographic lens, a non-volatile storage means storing a control program for a central treatment device provided on the camera body side, a camera body and a signal An interchangeable lens unit having lens side signal transmitting / receiving means for transmitting and receiving
    A camera body to which the interchangeable lens unit is detachable, a camera side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, an image signal photoelectrically converted by the imaging element, and the lens side signal transmitting / receiving unit and the camera side A camera body having processing means for receiving the signal through the signal transmission / reception means, processing the image signal, and then recording the image signal on a recording medium;
    An interchangeable lens electronic camera.
  5. An interchangeable lens unit having a photographic lens, an imaging element on which a subject image is formed via the photographic lens, and a lens-side signal transmitting / receiving unit that transmits and receives signals to and from the camera body;
    A camera body to which the interchangeable lens unit is detachable, a camera side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, an image signal photoelectrically converted by the imaging element, and the lens side signal transmitting / receiving unit and the camera side A camera body having processing means for receiving the signal through the signal transmission / reception means, processing the image signal, and then recording the image signal on a recording medium,
    The lens side signal transmission / reception means has an input / output terminal for expansion.
  6. An interchangeable lens unit having a photographic lens, an imaging element on which a subject image is formed via the photographic lens, and a lens-side signal transmitting / receiving unit that transmits and receives signals to and from the camera body;
    A camera body to which the interchangeable lens unit is detachable, a camera side signal transmitting / receiving unit that transmits / receives a signal to / from the interchangeable lens unit, an image signal photoelectrically converted by the imaging element, and the lens side signal transmitting / receiving unit and the camera side A camera body having processing means for receiving the signal through the signal transmission / reception means, processing the image signal, and then recording the image signal on a recording medium,
    The camera-side signal transmitting / receiving means has an input / output terminal for expansion.
  7. A first interchangeable lens suitable for telephoto photography having an image pickup device having a small light receiving area, a telephoto lens having a short focal distance relative to the image pickup device, and a lens side signal transmitting / receiving means for transmitting / receiving signals to / from the camera body. Unit,
    A second interchangeable lens unit suitable for high-sensitivity imaging, having an image sensor with a large S / N with a large light receiving area, a lens with a large open F value, and a lens-side signal transmitting / receiving unit that transmits and receives signals to and from the camera body;
    At least the first and second interchangeable lens units are detachable camera bodies, and have camera-side signal transmitting / receiving means for transmitting and receiving signals to and from the interchangeable lens units, and the first and second interchangeable lens units A camera body that can be combined,
    An interchangeable lens electronic camera.
  8. A first imaging lens; a color imaging element on which a subject image is formed via the first imaging lens; a nonvolatile first storage means storing a color signal processing program; and a camera body A first interchangeable lens unit for color photography having a lens side signal transmission / reception means for transmitting and receiving signals,
    A second imaging lens; a monochrome imaging device on which a subject image is formed via the second imaging lens; a non-volatile second storage means storing a monochrome signal processing program; and a camera body And a second interchangeable lens unit for monochrome photography having a lens side signal transmitting / receiving means for transmitting and receiving signals,
    At least the first and second interchangeable lens units are detachable camera bodies, and have camera-side signal transmitting / receiving means for transmitting and receiving signals to and from the interchangeable lens units, and the first and second interchangeable lens units A camera body that can be combined,
    An interchangeable lens electronic camera.
  9. The interchangeable lens unit detachably attached to a camera body that receives an image signal from the interchangeable lens unit and receives a control program, processes the image signal based on the control program, and records the image signal on a recording medium,
    A photographic lens; an imaging device on which a subject image is formed via the photographic lens; a non-volatile storage means for storing the control program; and a lens-side signal transmission / reception means for transmitting / receiving signals to / from the camera body. An interchangeable lens unit characterized by that.
  10. An image signal is received from the interchangeable lens unit, and at least one of a signal processing program and image sensor specific defect information is received, and the image signal is received according to at least one of the signal processing program and image sensor specific defect information. The interchangeable lens unit is detachable from the camera body for recording on a recording medium after processing,
    A non-volatile storage that stores at least one of a photographing lens, an image sensor on which a subject image is formed via the photographing lens, the signal processing program corresponding to the image sensor, and defect information unique to the image sensor An interchangeable lens unit comprising storage means and lens-side signal transmission / reception means for transmitting / receiving signals to / from the camera body.
JP34734998A 1998-12-07 1998-12-07 Interchangeable lens electronic camera, interchangeable lens unit and camera body Expired - Fee Related JP3945052B2 (en)

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JP34734998A JP3945052B2 (en) 1998-12-07 1998-12-07 Interchangeable lens electronic camera, interchangeable lens unit and camera body

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