JP2003122263A - Display unit and image pickup unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit which converts the number of pixels of an image signal to the number of pixels of a display screen. SOLUTION: This invention relates to a display unit 100 having a plurality of display pixels and comprising an input part 122 for receiving thereto an image signal composed of a plurality of pixel signals, a pixel number conversion part 124 for reducing the number of pixel signals included in the image signal inputted to the input part 122, and a display part 134 for displaying an image according to the image signal reduced in the number of the image signals by the pixel number conversion part 124. The pixel number conversion part 124 is arranged in the vicinity of the input part 122.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display unit and an image pickup device. In particular, the present invention relates to a display unit having a plurality of display pixels.

[0002]

2. Description of the Related Art Conventionally, a display device has been input with an image signal having the number of pixels suitable for the display device. Further, the image pickup apparatus is equipped with such a display device.

[0003]

In this case, since a circuit for generating an image signal suitable for the display device must be mounted separately from the display device, the number of parts is large compared to the size of the display screen. The equipment had become large.

Therefore, an object of the present invention is to provide a display unit and an image pickup device which can solve the above problems. This object is achieved by a combination of features described in independent claims of the invention. The dependent claims define further advantageous specific examples of the present invention.

[0005]

That is, according to a first aspect of the present invention, there is provided a display unit having a plurality of display pixels, the input unit inputting an image signal composed of a plurality of pixel signals. A pixel number conversion unit that reduces the number of pixel signals included in the image signal input by the input unit, and a display unit that displays an image according to the image signal in which the pixel number conversion unit reduces the number of pixel signals The section is provided near the input section.

The pixel number conversion unit further includes a drive circuit for applying a voltage to the electrodes in the display unit based on the image signal obtained by subtracting the number of pixel signals, and the pixel number conversion unit is located closer to the input unit than the drive circuit. May be provided.

The input section further comprises a D / A converter for inputting an image signal as digital data, converting the image signal in which the number of pixel signals is reduced by the pixel number conversion section into an analog signal, and outputting the analog signal to the drive circuit. , D / A converter may be provided at a position farther from the pixel number conversion unit than the drive circuit.

The input unit inputs the image signal as digital data, and the pixel number conversion unit generates a clock signal indicating the timing of displaying the image signal with the number of pixel signals reduced on the display unit, and the pixel number conversion unit. Is a D / A that converts an image signal from which the number of pixel signals has been reduced into an analog signal and outputs the analog signal to the drive circuit.
The drive circuit further includes a converter, and the drive circuit amplifies a signal level of the image signal converted into an analog signal by the D / A converter, based on the clock signal, and a first drive circuit which drives one of the plurality of display pixels. The second drive circuit may be provided, and the D / A converter may be provided at a position farther from the pixel number conversion unit than the second drive circuit.

The D / A converter may be integrally formed on the same semiconductor device as the second drive circuit.
The D / A converter may be provided at an end of the semiconductor device farthest from the first drive circuit or in the vicinity thereof.

The input unit inputs the image signal as digital data, and the pixel number conversion unit generates a clock signal indicating the timing of displaying the image signal with the number of pixel signals reduced on the display unit, and the pixel number conversion unit. Is a D / A that converts an image signal from which the number of pixel signals has been reduced into an analog signal and outputs the analog signal to the drive circuit.
The drive circuit further includes a converter, and the drive circuit amplifies a signal level of the image signal converted into an analog signal by the D / A converter, based on the clock signal, and a first drive circuit which drives one of the plurality of display pixels. A second drive circuit, and DC / that generates a voltage to be supplied to the second drive circuit.
A DC converter may be further provided, and the DC / DC converter may be provided at a position closer to the first drive circuit than the second drive circuit.

The DC / DC converter may be integrally formed on the same semiconductor device as the first drive circuit. The DC / DC converter may be provided on the semiconductor device near the end farthest from the second drive circuit.

The display unit has a substantially rectangular shape, and further includes a D / A converter for converting the image signal, which is obtained by subtracting the number of pixel signals by the pixel number conversion unit, into an analog signal and outputting the analog signal to the drive circuit. The pixel number conversion unit may be provided on one side of the display unit, and the D / A converter may be provided on a side different from the one side in the display unit.

The display unit has a substantially rectangular shape, and further includes a D / A converter that converts the image signal, which is obtained by reducing the number of pixel signals by the pixel number conversion unit, into an analog signal and outputs the analog signal to the drive circuit. The pixel number conversion unit may be provided near the corner of the display unit.

The D / A converter may be provided near a corner different from the corner where the pixel number conversion unit is provided.

According to a second aspect of the present invention, there is provided an image pickup device comprising a display unit having a plurality of display pixels,
An image pickup unit for picking up an image, a storage unit for storing the image picked up by the image pickup unit, and a display unit for displaying the image stored in the storage unit, the display unit having an input unit for inputting an image signal, A pixel number conversion unit that reduces the number of pixel signals included in the image signal input by the input unit, and a display unit that displays the image signal in which the pixel number conversion unit reduces the number of pixel signals,
The pixel number conversion unit is provided near the input unit.

The above summary of the invention does not enumerate all the necessary features of the present invention, and a sub-combination of these feature groups can also be the invention.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the claimed invention, and the features described in the embodiments Not all combinations are essential to the solution of the invention.

FIG. 1 is a block diagram showing a characteristic functional configuration of a digital camera 10 as an example of the image pickup apparatus according to the present embodiment. The digital camera 10
The imaging unit 20, the storage unit 120, and the display unit 100 are provided. The image capturing unit 20 captures an image and stores the captured image in the storage unit 120. The display unit 100 displays an image according to the image signal stored in the storage unit 120.

The display unit 100 has an input section 122 and
The pixel number conversion unit 124, the first drive circuit 126, D /
A converter 128, second drive circuit 130, DC
It has a / DC converter 132 and a display unit 134.

The display unit 134 displays a full color image. For the display unit 134, for example, a liquid crystal display element is used. As the liquid crystal display element, for example, cholesteric liquid crystal is used. Cholesteric liquid crystals are sandwiched between transparent substrates such as glass substrates. On the front and back of the transparent substrate,
A plurality of transparent electrodes are formed in a matrix. A voltage is applied to the intersection of the electrodes to form one pixel. The liquid crystal display element is brought into a selective reflection state when a voltage is applied, and strongly reflects only a light ray having a specific wavelength. The liquid crystal display element has a red layer that displays red by switching between a red selective reflection state and a transparent state, and a green layer that displays green by switching between a green selective reflection state and a transparent state,
A blue layer for displaying blue color is laminated by switching between a blue selective reflection state and a transparent state.

The display section 134 is driven by, for example, an active matrix driving method. The display unit 134 is provided with a switching element for each pixel. The switching element is composed of, for example, a thin film transistor or a thin film diode. The switching element applies a drive voltage to the liquid crystal display element of the display unit 134. First drive circuit 126
Turns the switching element of the display unit 134 on or off. The second drive circuit 130 applies a voltage based on the image signal to the switching element in synchronization with the first drive circuit 126.

The input unit 122 inputs an image signal composed of a plurality of pixel signals from the storage unit 120 and sends it to the pixel number conversion unit 124. The DC / DC converter 132 is
The DC voltage is input, the input DC voltage is boosted, and the boosted voltage is output to the second drive circuit 130. DC / DC converter 13
2 raises the voltage of 5V to 12V, for example.

The pixel number conversion unit 124 reduces the number of pixel signals included in the received image signal. The number of pixel signals included in the image signal captured by the image capturing unit 20 is determined by the display unit 134.
Is larger than the number of pixel signals to be displayed. Therefore, the pixel number conversion unit 124 reduces the number of pixel signals included in the image signal captured by the image capturing unit 20 to the number of pixel signals displayed on the display unit 134. The pixel number conversion unit 124 sends the image signal from which the number of pixel signals has been reduced to the D / A converter 128. Further, the pixel number conversion unit 124 generates a clock signal indicating the timing of displaying the image signal received from the input unit 122 on the display unit 134. The pixel number conversion unit 124 sends the generated clock signal to the first drive circuit 126 in synchronization with the timing of sending the image signal to the D / A converter 128.

The D / A converter 128 converts the image signal received from the pixel number conversion unit 124 from a digital signal into an analog signal and sends it to the second drive circuit 130.
The second drive circuit 130 amplifies the analog image signal received from the D / A converter 128 by the 12V voltage power supply received from the DC / DC converter 132. The second drive circuit 130 applies a voltage to the horizontal switching element of the display unit 134 based on the image signal of the amplified analog signal.

The first drive circuit 126 converts the clock signal for displaying the image signal on the display unit 134 into the pixel number conversion unit 12
Received from 4 and based on the received clock signal,
The vertical switching element of the display portion 134 is turned on or off.

FIG. 2 shows the configuration of the display unit 100 according to the first embodiment. The input unit 122 and the pixel number conversion unit 124 are provided on the glass substrate 144 of the display unit 100.
, The first drive circuit 126, and the DC / DC converter 1
32, the second drive circuit 130, and the D / A converter 1
And 28 are provided. The D / A converter 128 is
It is formed integrally with the second drive circuit 130 and the same second semiconductor device 142. The DC / DC converter 132 is integrally formed on the same first semiconductor device 140 as the first drive circuit 126.

Thus, the D / A converter 128 is formed integrally with the second drive circuit 130 on the second semiconductor device 142, and the DC / DC converter 132 is formed on the first semiconductor device 140. The display unit 100 can be miniaturized by being integrally formed with the first drive circuit 126. Also, the circuit design can be simplified.

The pixel number conversion unit 124 includes a glass substrate 144.
It is provided near the upper input unit 122. In the present embodiment, the pixel number conversion unit 124 is further provided at a position closer to the input unit 122 than the first drive circuit 126, the second drive circuit 130, and the D / A converter 128.
The display unit 134 has a substantially rectangular shape, for example, a rectangular shape, the pixel number conversion unit 124 is provided near a corner of the display unit 134, and the D / A converter 128 is different from the pixel number conversion unit 124. It is provided near the corner.

Since the number of pixel signals input to the display unit 100 is usually larger than the number of pixel signals displayed on the display unit 134, the pixel number conversion unit 124 reduces the number of pixel signals included in the image signal. . Therefore, the pixel number conversion unit 124
Receives high-frequency digital data from the input unit 122, so that noise may be mixed into other circuits. Therefore, by providing the pixel number conversion unit 124 according to the present embodiment in the vicinity of the input unit 122 and in the vicinity of the corner of the display unit 134, it is possible to reduce the possibility of mixing noise with other circuits. it can. Particularly, since the pixel number conversion unit 124 is adjacent to the D / A converter 128, there is a high possibility that noise will be mixed into the analog data output by the D / A converter 128. Therefore, by providing the first drive circuit 126 and the second drive circuit 130 between the pixel number conversion unit 124 and the D / A converter 128, noise may be mixed into the D / A converter 128. Can be lowered.

Since the second drive circuit 130 receives the pixel signal of analog data from the D / A converter 128, if it is provided adjacent to the DC / DC converter 132, noise will be mixed into the analog data, The data is likely to go crazy. On the other hand, since the first drive circuit 126 only processes the clock signal indicating the timing of displaying the image signal on the display unit 134, the possibility that data will be corrupted even if noise is mixed is low. Therefore, the DC / DC converter 132 causes the second drive circuit 130 to
By being provided at a position closer to the first drive circuit 126, it is possible to reduce the possibility of mixing noise in the analog data processed by the second drive circuit 130.

The D / A converter 128 is provided at the end of the second semiconductor device 142 farthest from the first drive circuit 126. Further, the D / A converter 128 may be provided near the end of the second semiconductor device 142 farthest from the first drive circuit 126.

The DC / DC converter 132 is provided on the first semiconductor device 140, and the second drive circuit 130 is provided.
Is provided near the end farthest from. Also DC
The / DC converter 132 includes the first semiconductor device 14
0 may be provided at the end farthest from the second drive circuit 130.

As described above, the D / A converter 128 is provided at the end of the second semiconductor device 142 farthest from the first drive circuit 126, and the DC / DC converter 132 is provided at the first semiconductor. On device 140,
By providing the DC / DC converter 132 near the end farthest from the second drive circuit 130, the D / A converter
It can be provided at a position further away from the converter 128.

FIG. 3 shows the configuration of the display unit 100 according to the second embodiment. In the display unit 100 according to the second embodiment, the first drive circuit 126 is not integrally formed with the DC / DC converter 132 on the first semiconductor device 140, and the second drive circuit 130 is the second. Two
Of the first embodiment at the point where the semiconductor device 142 is not integrally formed with the D / A converter 128, and at the position on the glass substrate 144 where the DC / DC converter 132 and the D / A converter 128 are provided. It is different from the display unit 100 according to the embodiment.

The D / A converter 128 according to the second embodiment is provided on the glass substrate 144 at different ends on the same side of the pixel number conversion unit 124 and the display unit 134. As a result, the D / A conversion unit 124
The wiring pattern for sending the image signal to the converter 128 can be designed to be shorter. The DC / DC converter 132 according to the second embodiment includes the first drive circuit 126.
And at the end apart from the second drive circuit 130. Accordingly, it is possible to reduce the possibility that noise is mixed in the image signals processed by the first drive circuit 126 and the second drive circuit 130.

The configuration of the display unit 100 according to the second embodiment other than this is the same as that of the display unit 100 according to the first embodiment, and therefore the description thereof is omitted.

FIG. 4 shows the configuration of the display unit 100 according to the third embodiment. In the display unit 100 according to the second embodiment, the first driving circuit 126 is not integrally formed with the DC / DC converter 132 on the first semiconductor device 140, and the second driving circuit 130 is The D / A converter 12 is provided on the second semiconductor device 142.
8 is different from the display unit 100 according to the first embodiment in that it is not integrally formed with the display unit 8.

FIG. 5 shows the structure of a digital camera 10 as an example of the image pickup apparatus. The digital camera 10 includes an imaging unit 20, an imaging control unit 40, a system control unit 60, a display unit 100, an operation unit 110, a storage unit 120, an image processing unit 160, and an external connection unit 150. The imaging unit 20 of FIG. 1 is, for example, the imaging unit 20 of FIG. 5, the storage unit 120 of FIG. 1 is the storage unit 120 or the optional device 76 of FIG. 5, and the display unit 100 of FIG. It corresponds to the display unit 100 of FIG.

The image pickup section 20 includes a photographing lens section 22 and a diaphragm 2.
4, a shutter 26, an optical LPF 28, a CCD 30, an image pickup signal processing unit 32, a finder 34, and a strobe 36.

The taking lens unit 22 takes in a subject image and processes it. The taking lens unit 22 includes a focus lens, a zoom lens, and the like, and forms a subject image on the light receiving surface of the CCD 30. The stop 24 stops the light that has passed through the taking lens unit 22, and the optical LPF 28 allows a wavelength component longer than a predetermined wavelength included in the light that has passed through the stop 24 to pass. Each sensor element of the CCD 30 accumulates electric charge according to the amount of light of the formed subject image (hereinafter, the electric charge is referred to as “accumulated electric charge”).

The shutter 26 is a mechanical shutter,
It controls whether or not the light passing through the taking lens unit 22 is exposed to the CCD 30. Further, the digital camera 10 may have an electronic shutter function instead of the shutter 26. In order to realize the electronic shutter function, the sensor element of the CCD 30 has a shutter gate and a shutter drain. By driving the shutter gate, the accumulated charge is swept out to the shutter drain. By controlling the shutter gate, the time for accumulating charges in each sensor element, that is, the shutter speed can be controlled. In the CCD 30, the accumulated charges are read out to the shift register by the read gate pulse and sequentially read out as a voltage signal by the register transfer pulse.

The image pickup signal processing section 32 color-separates the voltage signal indicating the object image output from the CCD 30, that is, the analog signal, into R, G, and B components. Then, the imaging signal processing unit 32 adjusts the white balance of the subject image by adjusting the R, G, and B components. Imaging signal processing unit 32
Performs gamma correction on the subject image. Then, the imaging signal processing unit 32 A / D-converts the analog signal decomposed into R, G, and B components, and obtains the resulting digital image data of the subject image (hereinafter referred to as “digital image data”). Output to the system control unit 60. Image output device 2 of FIG.
The operation of 00 may be performed by the imaging signal processing unit 32 as an example.

The finder 34 may have a display means, and various information from the main CPU 62, which will be described later, may be displayed in the finder 34. The strobe 36 has a discharge tube 37 that discharges the energy stored in the capacitor, and the discharge tube 37 is supplied when the energy is supplied to the discharge tube 37.
Works by emitting light.

The image pickup control section 40 has a lens drive section 42, a focus drive section 44, an aperture drive section 46, a shutter drive section 48, an image pickup system CPU 50 for controlling them, a distance measuring sensor 52, and a photometric sensor 54. Lens drive unit 4
2, the focus driving unit 44, the diaphragm driving unit 46, and the shutter driving unit 48 each have a driving unit such as a stepping motor, and drive a mechanical member included in the imaging unit 20. When the release switch 114, which will be described later, is pressed, the distance measuring sensor 52 measures the distance to the subject, and the photometric sensor 5
4 measures the subject brightness. Then, the distance measuring sensor 52 and the photometric sensor 54 respectively collect data of the measured distance to the subject (hereinafter simply referred to as “distance measuring data”) and subject brightness data (hereinafter simply referred to as “photometric data”). It is supplied to the CPU 50.

The image pickup system CPU 50 uses the lens driving section 42 based on the photographing information such as the zoom magnification designated by the user.
Also, the focus drive unit 44 is controlled to adjust the zoom magnification and focus of the taking lens 22. In addition, the imaging system CPU
The 50 may control the lens driving unit 42 and the focus driving unit 44 based on the distance measurement data received from the distance measuring sensor 52 to adjust the zoom magnification and the focus.

The image pickup system CPU 50 determines the aperture value and the shutter speed based on the photometric data received from the photometric sensor 54. According to the determined value, the diaphragm driving unit 46 and the shutter driving unit 48 respectively control the diaphragm amount of the diaphragm 24 and the opening / closing of the shutter 26.

Further, the image pickup system CPU 50 uses the photometric sensor 5
Based on the photometric data received from
The emission of light is controlled and at the same time, the diaphragm amount of the diaphragm 24 is adjusted.
When the user gives an instruction to capture an image, the CCD 30 starts charge storage, and outputs the stored charge to the imaging signal processing unit 32 after the shutter time calculated from the photometric data has elapsed.

The system control unit 60 includes the main CPU 6
2, a character generator 84, a timer 86, and a clock generator 88. The main CPU 62 controls the entire digital camera 10, particularly the system control unit 60. The main CPU 62 uses an image pickup system CP by serial communication or the like.
Transfer necessary information to and from U50.

The clock generator 88 is used by the main CPU 62.
The operation clock of is generated and supplied to the main CPU 62. The clock generator 88 also generates an operation clock for the image pickup system CPU 50 and the display unit 100. The clock generator 88 includes a main CPU 62 and an image pickup system CPU 5.
Operation clocks of different frequencies may be supplied to 0 and the display unit 100, respectively.

The character generation unit 84 generates character information and graphic information to be combined with the photographed image such as photographing date and time and title. The timer 86 is backed up by, for example, a battery, always counts time, and supplies the main CPU 62 with time information such as information regarding the shooting date and time of the shot image based on the count value. It is desirable that the timer 86 count the time by the power supplied from the storage battery even when the power source of the digital camera body is off. Also,
The character generation unit 84 and the timer 86 are the main CPU
It is preferable to be installed at 62.

The storage section 120 has a memory control section 64, a non-volatile memory 66, and a main memory 68. The memory control unit 64 includes a nonvolatile memory 66 and a main memory 6
8 and control. The non-volatile memory 66 is an EEPROM
(Electrically erasable and programmable ROM) and FLAS
The H memory or the like stores data that should be held even while the power of the digital camera 10 is off, such as user setting information and factory adjustment values. The non-volatile memory 66 may store a boot program for the main CPU 62, a system program, and the like.

The main memory 68 is preferably a relatively inexpensive memory having a large capacity, such as a DRAM. The main memory 68 has a function as a frame memory for storing the data output from the imaging unit 20, a function as a system memory for loading various programs, and a function as a work area. The nonvolatile memory 66 and the main memory 68 exchange data with each unit inside and outside the system control unit 60 via the bus 82.
The non-volatile memory 66 may further store digital image data.

The image processing section 160 has a YC processing section 70, an encoder 72, and a compression / expansion processing section 78. Further, the external connection unit 150 includes an optional device control unit 74,
And a communication I / F unit 80.

The YC processing section 70 performs YC conversion on the digital image data to generate a luminance signal Y and color difference (chroma) signals BY and RY. The main memory 68 is
The luminance signal and the color difference signal are stored under the control of the memory control unit 64.

The compression / expansion processing unit 78 has a main memory 68.
The luminance signal and the color difference signal are sequentially read from and compressed. Then, the option device controller 74 writes the compressed digital image data (hereinafter simply referred to as “compressed data”) to a memory card, which is an example of the option device 76.
The optional device 76 may operate the image output device 200 of FIG.

The encoder 72 converts the luminance signal and the color difference signal into a video signal (NTSC or PAL signal) and outputs it from the terminal 90. When a video signal is generated from the compressed data recorded in the option device 76, the compressed data is first given to the compression / expansion processor 78 via the option device controller 74. Subsequently, the data subjected to the necessary expansion processing by the compression / expansion processing unit 78 is converted into a video signal by the encoder 72.

The optional device control unit 74 generates necessary signals between the bus 82 and the optional device 76, performs logical conversion, and / or voltage conversion according to the signal specifications permitted by the optional device 76 and the bus specifications of the bus 82. And so on. The digital camera 10 may support, for example, a standard PCMCIA-compliant standard I / O card as the optional device 76, in addition to the memory card described above. In that case, the optional device control unit 74 determines the PCMCIA bus control LS.
You may comprise by I etc.

The communication I / F unit 80 is used for the digital camera 10.
Supported communication specifications, such as USB, RS-23
Controls such as protocol conversion according to specifications such as 2C and Ethernet. The communication I / F unit 80 may output the compressed data or the digital image data to an external device including a network via the terminal 92. The communication I / F unit 80 includes a driver IC as necessary, and communicates with an external device via a terminal 92. The communication I / F unit 80 may be configured to exchange data with an external device such as a printer, a karaoke machine, a game machine, or the like through a unique interface.

The display unit 100 includes the LCD monitor 10
2, the LCD panel 104, the monitor driver 106, and the panel driver 108. Monitor driver 106
Controls the LCD monitor 102. The panel driver 108 also controls the LCD panel 104. LCD
The monitor 102 is provided on the back surface of the camera, for example, with a size of about 2 inches, and displays the current shooting and playback mode, shooting and playback zoom magnification, battery level, date and time, mode setting screen, subject image, and the like. indicate. The LCD panel 104 is, for example, a small monochrome LCD provided on the upper surface of the camera, and displays information such as image quality (FINE / NORMAL / BASIC, etc.), strobe light emission / emission prohibition, standard number of recordable images, number of pixels, battery capacity / remaining amount, etc. .

The operation unit 110 includes a power switch 112,
It has a release switch 114, a function setting unit 116, and a zoom switch 118. The power switch 112 is
The power of the digital camera 10 is turned on / off based on a user's instruction. The release switch 114 has a two-step pushing structure of half-push and full-push. As an example, when the release switch 114 is half pressed, the imaging control unit 40 performs automatic focus adjustment and automatic exposure adjustment, and when the release switch 114 is fully pressed, the imaging unit 20 captures a subject image.

The function setting section 116 is, for example, a rotary type mode dial, a cross key, or the like, and has "file format", "special effect", "print", "decide / save",
Settings such as "display switching" are accepted. Zoom switch 1
18 receives the setting of the zoom magnification of the subject image acquired by the imaging unit 20.

The main operation of the above configuration is as follows. First, the power switch 112 is pressed to supply power to each unit of the digital camera 10. Main CPU
Reference numeral 62 reads the state of the function setting section 116 to determine whether the digital camera 10 is in the shooting mode or the reproduction mode.

When the digital camera 10 is in the photographing mode,
The main CPU 62 monitors the half-pressed state of the release switch 114. When the half-pushed state of the release switch 114 is detected, the imaging system CPU 50 obtains photometric data and distance measurement data from the photometric sensor 54 and the distance measuring sensor 52, respectively. The imaging control unit 40 adjusts the focus, diaphragm, etc. of the imaging unit 20 based on the photometric data and the distance measurement data obtained by the imaging system CPU 50. When the adjustment is completed, the LCD monitor displays a character such as "standby" to inform the user.

Subsequently, the main CPU 62 monitors the fully pressed state of the release switch 114. When the fully pressed state of the release switch 114 is detected, the shutter 26 is closed after a predetermined shutter time, and the charge accumulated in the CCD 30 is swept out to the image pickup signal processing section 32. The digital image data generated as a result of the processing by the imaging signal processing unit 32 is output to the bus 82. The digital image data is once stored in the main memory 68, and thereafter the YC processing unit 7
0 is processed by the compression / expansion processing unit 78 and is recorded in the optional device 76 via the optional device control unit 74.
The captured image based on the recorded digital image data is displayed on the LCD monitor 102 for a while in a frozen state, and the user can confirm the captured image. This completes a series of shooting operations.

On the other hand, when the digital camera 10 is in the reproduction mode, the main CPU 62 reads out the photographed image from the main memory 68, the non-volatile memory 66, and / or the option device 76, and reads it out from the LCD monitor 102 of the display unit 100. Display to.

In this state, when the user instructs "forward feed" and "reverse feed" in the function setting section 116, the main CPU 6
2 is a main memory 68, a non-volatile memory 66, and / or
Alternatively, another captured image stored in the option device 76 is read out and is read out from the LCD monitor 102 of the display unit 100.
Display to.

Although the present invention has been described using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be added to the above-described embodiment. A mode in which such changes or improvements are added may be included in the technical scope of the present invention.
It is clear from the description of the claims.

[0068]

As is apparent from the above description, according to the present invention, it is possible to provide the display unit which converts the number of pixels of the image signal into the number of pixels of the display screen.

[Brief description of drawings]

FIG. 1 is a block diagram showing a characteristic functional configuration in a digital camera 10 as an example of an image pickup apparatus according to the present embodiment.

FIG. 2 is a diagram showing a configuration of a display unit 100 according to the first embodiment.

FIG. 3 is a diagram showing a configuration of a display unit 100 according to a second embodiment.

FIG. 4 is a diagram showing a configuration of a display unit 100 according to a third embodiment.

FIG. 5 is a diagram showing a configuration of a digital camera 10 as an example of an imaging device.

[Explanation of symbols]

20 Imaging unit 120 storage 122 Input section 124 pixel number converter 126 first drive circuit 128 D / A converter 130 Second drive circuit 132 DC / DC converter 134 Display 140 First semiconductor device 142 Second semiconductor device 144 glass substrate

Claims (13)

[Claims] 1. A display unit having a plurality of display pixels, comprising an input section for inputting an image signal composed of a plurality of pixel signals, and a pixel signal included in the image signal input by the input section. A pixel number conversion unit that reduces the number of pixels, and a display unit that displays an image according to the image signal in which the pixel number conversion unit reduces the number of pixel signals, the pixel number conversion unit being provided in the vicinity of the input unit. A display unit characterized by being provided. 2. The pixel number conversion unit further includes a drive circuit that applies a voltage to an electrode in a display unit based on an image signal obtained by subtracting the number of the pixel signals, and the pixel number conversion unit is the drive circuit. The display unit according to claim 1, wherein the display unit is provided at a position closer to the input unit. 3. The input unit inputs the image signal as digital data, the pixel number conversion unit converts the image signal from which the number of the pixel signals is reduced into an analog signal, and outputs the analog signal to the drive circuit. 3. The display unit according to claim 2, further comprising a D / A converter that is provided, the D / A converter being provided at a position farther from the pixel number conversion unit than the drive circuit. 4. The input section inputs the image signal as digital data, and the pixel number conversion section indicates a clock signal indicating a timing at which the image signal obtained by subtracting the number of the pixel signals is displayed on the display section. And further comprising a D / A converter for converting the image signal, in which the number of pixel signals is reduced by the pixel number conversion unit, into an analog signal, and outputting the analog signal to the drive circuit, A first drive circuit that drives one of the plurality of display pixels based on a signal; and a second drive circuit that amplifies the signal level of the image signal converted into an analog signal by the D / A converter. The display unit according to claim 2, wherein the D / A converter is provided at a position farther from the pixel number conversion unit than the second drive circuit. 5. The display unit according to claim 4, wherein the D / A converter is integrally formed on the same semiconductor device as the second drive circuit. 6. The D / A converter is provided at an end of the end of the semiconductor device that is farthest from the first drive circuit or in the vicinity of the end of the semiconductor device. Display unit described. 7. The input unit inputs the image signal as digital data, and the pixel number conversion unit indicates a clock signal indicating a timing at which the image signal obtained by subtracting the number of the pixel signals is displayed on the display unit. And further comprising a D / A converter for converting the image signal, in which the number of pixel signals is reduced by the pixel number conversion unit, into an analog signal, and outputting the analog signal to the drive circuit, A first drive circuit that drives one of the plurality of display pixels based on a signal; and a second drive circuit that amplifies the signal level of the image signal converted into an analog signal by the D / A converter. And a DC / D for generating a voltage to be supplied to the second drive circuit.
The display unit according to claim 1, further comprising a C converter, wherein the DC / DC converter is provided at a position closer to the first drive circuit than the second drive circuit. 8. The DC / DC converter comprises the first
The display unit according to claim 7, wherein the display unit is integrally formed on the same semiconductor device as that of the driving circuit. 9. The display unit according to claim 8, wherein the DC / DC converter is provided on the semiconductor device in the vicinity of an end farthest from the second drive circuit. . 10. The display unit has a substantially rectangular shape, and the pixel number conversion unit converts the image signal from which the number of the pixel signals is reduced into an analog signal and outputs the analog signal to the drive circuit. / A converter is further provided, the pixel number conversion unit is provided on one side of the display unit, the D / A converter, in the display unit, the 1
The display unit according to claim 1, wherein the display unit is provided on a side different from the side. 11. The display unit has a substantially rectangular shape, and the pixel number conversion unit converts the image signal from which the number of the pixel signals is reduced into an analog signal and outputs the analog signal to the drive circuit. The display unit according to claim 1, further comprising an A / A converter, wherein the pixel number conversion unit is provided near a corner of the display unit. 12. The display unit according to claim 11, wherein the D / A converter is provided near a corner different from the corner where the pixel number conversion unit is provided. 13. An image pickup apparatus comprising a display unit having a plurality of display pixels, the image pickup section picking up an image, a storage section storing the image picked up by the image pickup section, and stored in the storage section. And a display unit for displaying the image, the display unit, an input unit for inputting an image signal, a pixel number conversion unit for reducing the number of pixel signals included in the image signal input by the input unit, The image pickup device, wherein the pixel number conversion unit includes a display unit that displays the image signal in which the number of the pixel signals is reduced, and the pixel number conversion unit is provided near the input unit. .