Recently, there has been a growing demand for an input device that offers high operability to match advances in the functions and multi-functions of electronic equipment. "Highly operable input device" refers to the kind of device that can emulate certain human senses, i.e., an input device that has an analog output. Here, we introduce analog pointing devices (hereinafter called APDs) that use Hall sensors, to enable free movement of the cursor on screens for cellular phones, etc.
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APD using Hall sensor |
Advantages of using Hall sensors in APDs
| 1. |
Analog output of displacement of the input key and high operability can be obtained. |
| 2. |
Small, thin construction of the control element can be achieved. |
| 3. |
Durability is improved due to the non-contact detection process. |
| 4. |
Because magnetism is detected, the device is more resistant to tiny particles of dirt, dust, or oil. |
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Principle |
| The magnetic field produced by a magnet that is integrated with the moving element is detected by four Hall elements, and the position of the magnet is computed from the difference in magnetic flux density detected in two dimensions. |
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Recommended products for application |
We can supply the following products for use in constructing APDs:
 Builtâ^'in control IC type: EQ-8441
Hall element type: HQ-8220, HQ-0221, HQ-0111 and HQ-0611 |
List of applications |
| Cellular phones, etc. |
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Composition - 1
