Testing an electronic device having a keypad by simultaneously pressing several keys

A technology of electronic equipment and equipment, applied in the direction of electrical digital data processing, error detection/correction, input/output process of data processing, etc., can solve the problem of not requiring, not allowing multiple simultaneous key presses, and the controller cannot be determined And other issues

Inactive Publication Date: 2007-08-01
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since four keys were detected and only three were pressed, the controller cannot determine which is the phantom key
[0006] If the device being detected does not require or allow multiple simultaneous key presses (other than the case of avoiding phantom keys), there is usually no reason to prevent or account for phantom keys

Method used

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  • Testing an electronic device having a keypad by simultaneously pressing several keys
  • Testing an electronic device having a keypad by simultaneously pressing several keys
  • Testing an electronic device having a keypad by simultaneously pressing several keys

Examples

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Embodiment Construction

[0023] detailed example

[0024] FIG. 1 is a block diagram of a testing system 100 in the present invention. System 100 includes an electronic device 102 having a plurality of keys 104 . Device 102 includes, for example, a remote control device for controlling consumer electronics (CE) equipment. Each of the keys 104 invokes a corresponding control function of the device 102 as soon as each of the keys 104 is pressed in operational use of the device 102 . For example, one key could perform a "channel-up" function, another key a "channel-minus" function, and a third a "mute" button. Some control functions require certain key combinations to be pressed sequentially or together. For remote operation of compatible CE equipment (not shown), device 102 has communication means 106 including, for example, infrared (IR) transmitters or radio frequency (RF) transmitters. The device 102 further has a controller 108 which, in operational use of the device 102, converts key presses int...

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PUM

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Abstract

The controller of a remote control device is modified to implement a test mode for testing the device's keyboard. During testing, specific ones of the keys are pressed in parallel in selected combinations. In response, the controller has the device generate an RC5 frame with information about functioning of the keys pressed in parallel. This approach expedites the testing of remote controls.

Description

field of invention [0001] The invention relates to an electronic device having a plurality of depressible keys. The invention further relates to an electronic circuit with a controller for an electronic device comprising a plurality of keys, and a method of testing such a device. Background technique [0002] As part of the manufacturing process, every electronic device is tested before it leaves the factory. If the device has keys or buttons (keyboard, keypad), then it must be tested for their correct function. The testing process can be as simple as pressing each key individually and confirming that the result is as expected. However, this method is not easy to industrialize. If the device has a microcontroller, the device to be tested can easily be adapted to have a different function during testing than that of the device in operational use. One way of testing can use an automated test system to test the keys of the device. The tester presses a key and receives test...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/023
CPCG06F11/2221
Inventor T·登奥登
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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