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Imaging apparatus

A technology of a camera device and a camera element, which is applied in the directions of image communication, TV, color TV components, etc., and can solve the problems of synchronous signal processing and inability to perform camera signals.

Active Publication Date: 2012-09-05
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in terms of configuration, the PLL takes some time until a stable output signal of the desired frequency is obtained for the input signal
Therefore, when the operation mode of the imaging device changes suddenly, the operation of the PLL cannot follow the change in the operation mode, and as a result, the signal processing synchronous with the imaging signal may not be performed.

Method used

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no. 1 Embodiment approach

[0025] First, the first embodiment of the present invention will be described. figure 1 It is a diagram showing the configuration of an example of the imaging device according to the first embodiment of the present invention. The imaging device of this embodiment has multiple operating modes. Examples of the operation modes include a still image shooting mode, a continuous shooting mode, a moving image shooting mode, a review image display mode, and an imager AF mode.

[0026] The still image shooting mode is an operation mode suitable for shooting still images. The continuous shooting mode is a working mode for continuously shooting multiple still images and shooting a plurality of continuous still images. The moving image shooting mode is an operation mode suitable for shooting moving images. The review image display mode is an operation mode in which a so-called review image display is performed in real time by displaying a moving image obtained by continuously operating...

no. 2 Embodiment approach

[0091] Next, a second embodiment of the present invention will be described. In the above-described first embodiment, the dual-port SRAM is used for the storage unit 1072, and the write clock CLK1-1 and the read clock CLK2 are simultaneously input to one storage unit 1072, so that the writing and reading of imaging data pixel by pixel can be performed simultaneously. out. On the other hand, in the second embodiment, the same effect as that of the first embodiment can be obtained by using a one-port SRAM having only one input / output port of imaging data.

[0092] Figure 9 It is a diagram showing the detailed configuration of the mask processing unit 16 and the pre-processing unit 107 in the second embodiment. and, Figure 9 also with Figure 6 Similarly, a configuration is shown in which the four-channel imaging data input from the serial-to-parallel conversion unit 104 is arranged in the arrangement unit 105 as one-channel imaging data.

[0093] here, in Figure 9 throu...

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Abstract

The invention provides an imaging apparatus, which has a high speed interface such as an LVDS or the like and does the signal processing in accurate synchronization with the imaging signal even though converting the work mode on a sudden. The imaging apparatus includes an imaging element, a transfer unit, a storage unit, a signal processing unit, a write control unit, a read control unit, and a clock generation unit. The imaging element outputs image signals. The transfer unit serially transfers the image signals by using transfer channels. The storage unit stores the image signals transferred. The signal processing unit processes the image signals stored. The write control unit controls the writing of the image signals to the storage unit, in synchronism with a first clock signal synchronous with the image signals. The read control unit controls the reading of the image signals from the storage unit, in synchronism with a second clock signal for driving the signal processing unit. The clock generation unit generates the second clock signal having a frequency that accords with an amount of data constituted by the image signals transferred.

Description

technical field [0001] The present invention relates to an imaging device capable of serially transmitting imaging signals obtained by an imaging element using a number of transmission channels corresponding to operation modes. Background technique [0002] In recent years, the number of images that can be continuously shot has increased due to the speedup of the imaging elements included in imaging devices. In addition, along with this, the pixel rate of the imaging signal output from the imaging element is also increased, and it is necessary to process the imaging signal at high speed. [0003] As a response to an increase in the pixel rate of an imaging signal, there is known a technique of serially transmitting an imaging signal output from an imaging element using a Low Voltage Differential Signaling (LVDS: Low Voltage Differential Signaling) method. By using the LVDS method to transmit imaging signals, the speed of signal transmission can be increased and the power co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225H04N5/232H04N5/335H04N5/378
CPCH04N5/335H04N5/3765H04N25/00H04N25/745
Inventor 梁田崇志上野晃田中义信
Owner OLYMPUS CORP