Semiconductor device and imaging capturing apparatus
View Patent ↗A semiconductor device with an “anti-shake” function includes a logic chip having a digital circuit which obtains a value indicating the amount of vibration of device such as an imaging apparatus based on a vibration detection signal supplied from a vibration detection element to generate a correction signal. The logic chip includes a correction signal processing unit which generates the correction signal, and a control signal output unit which outputs a vibration control signal in accordance with the correction signal to a vibration correction control unit which executes vibration correction control for an optical component. The control signal output unit includes a plurality of types of signal output sections and outputs a vibration control signal corresponding to a driving unit from one signal output section selected from among the plurality of types of signal output sections.
1. A semiconductor device having an anti-shake function, comprising:
a logic chip having a digital circuit which obtains a value for vibration of an apparatus based on a vibration detection signal supplied from a vibration detection element to generate a correction signal,
the logic chip including:
a correction signal processing unit which generates the correction signal; and
a control signal output unit which outputs a vibration control signal in accordance with the correction signal to a vibration correction control unit which executes vibration correction control for an optical component in accordance with vibration,
wherein the control signal output unit includes a plurality of types of signal output sections and outputs the vibration control signal corresponding to a driving unit which drives the optical component from one signal output section which is selected from among the plurality of types of signal output sections;
wherein the semiconductor device further comprises a plurality of switches with each switch of the plurality of switches being configured to selectively provide the correction signal from the correction signal processing unit to only one of the plurality of types of signal output sections.
2. The semiconductor device according to claim 1 , wherein
the vibration correction control unit controls the driving unit which controls a position of a lens or an image sensor, which is the optical component, in accordance with the apparatus vibration value.
3. The semiconductor device according to claim 1 , wherein
the plurality of types of signal output sections include at least two types of signal output sections among a voice coil motor control signal output section, a stepping motor control signal output section, and a piezo element control signal output section.
4. The semiconductor device according to claim 1 , wherein
the plurality of types of signal output sections are provided corresponding to a plurality of types of vibration correction control sections which can be adopted as the vibration correction control unit which executes vibration correction control for the optical component.
5. The semiconductor device according to claim 1 , wherein
the logic chip and a driver chip which includes an analog circuit are contained in a common substrate and sealed in a single package, and
the driver chip includes the vibration correction control unit for an anti-shake function in the apparatus in which the semiconductor device is mounted.
6. An image capturing apparatus comprising:
a lens;
an image sensor;
a driving unit for driving the lens or the image sensor;
a vibration detection element for detecting vibration of the apparatus; and
a semiconductor device having an anti-shake function, wherein
the semiconductor device includes a logic chip having a digital circuit which obtains a value for vibration of the image capturing apparatus based on a vibration detection signal supplied from the vibration detection element to generate a correction signal,
the logic chip having:
a correction signal processing unit which generates the correction signal; and
a control signal output unit which outputs a vibration control signal in accordance with the correction signal to a vibration correction control unit which executes vibration correction control for the lens or the image sensor in accordance with vibration,
the control signal output unit including a plurality of types of signal output sections and outputting the vibration control signal corresponding to the driving unit from one signal output section which is selected from among the plurality of types of signal output sections;
wherein the semiconductor device further comprises a plurality of switches with each switch of the plurality of switches being configured to selectively provide the correction signal from the correction signal processing unit to only one of the plurality of types of signal output sections.
7. The image capturing apparatus according to claim 6 , wherein
the plurality of types of signal output sections of the semiconductor device include at least two types of signal output sections among a voice coil motor control signal output section, a stepping motor control signal output section, and a piezo element control signal output section.
8. The image capturing apparatus according to claim 6 , wherein
the plurality of types of signal output sections of the semiconductor device are provided corresponding to a plurality of types of vibration correction control sections which can be adopted as the vibration correction control unit.
9. The image capturing apparatus according to claim 6 , wherein
the logic chip of the semiconductor device and a driver chip including an analog circuit are contained in a common substrate and sealed in a single package, and
the driver chip includes the vibration correction control unit for an anti-shake function in the image capturing apparatus in which the semiconductor device is mounted.