JPS58108474A - Panel tester - Google Patents

Abstract

PURPOSE:To dissolve complication in the control of a general purpose input/ output port for a test by enabling a panel to be tested under the same condition as it is in the actual operation by carrying the same CPU on a panel tester as drives the panel to be tested so that it gets a direct bus interface with the panel. CONSTITUTION:A CPU7 of a tester the same as provided on a panel 4 to be tested gets a direct bus interface with the panel 4 while other input/output are allowed to have an interface with a general purpose input/output port 3. As there is no general purpose input/output port between the tester and the panel, any operation can be directed as done in the actual operation while making the interface timing identical as well. This enables the panel 4 being tested to be driven under the same interface condition. The panel 4 acts as specified and outputs a specified value to a general input/output terminal 6. The CPU of the tester reads this value through the general purpose input/output port 3, checks it upon with an expected value and then, indicates the judgement on the propriety of the results.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a 14-panel tester having 0 and 14 path interfaces, and more specifically to a panel tester used for controlling base stations of mobile phones.

Figure III is a block diagram showing the configuration of a conventional panel testing machine. In conventional panel testers, all interfaces with the panel under test were performed using general-purpose input/output ports, as shown in figure wJ1. For example, when specifying an address for the panel under test, the tester 1 and the panel under test 4 The general-purpose input/output port 3 is used as an interface, and the address information is set to each general-purpose input/output port one by one. The same applies to data input/output.

Like Jin, interface the address and data bus one by one, make the panel under test perform the specified operation, capture the output with the data bus, general-purpose input/output port, data transceiver, etc., and compare the expected value and the result. and judged whether it was good or bad. However, in conventional test machines, the path of the panel under test interfaces with some of the general-purpose input/output ports of the test machine, making control of the general-purpose input/output port complicated during rounding tests, and The timing board's interface had different drawbacks than the one in operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a panel testing machine that can overcome the above-mentioned drawbacks.

To achieve the above object, the panel testing machine according to the present invention has the same CPU as the one that drives the panel under test, gives commands to the panel under test to perform predetermined operations, and receives data from the panel under test. It includes a CPU that compares the results with expected values and determines whether the results are good or bad, a general-purpose input/output port, a clock oscillator, and a data transmitter/receiver. The ink 7 ace can be directly connected to the test panel's path, and the interface can be established to the general input/output port, the data transmitter/receiver 1, and other inputs and outputs of the panel under test, respectively, and the above-mentioned It has a display that displays the determination results.

According to the above-mentioned configuration, the control during the test is simpler than the conventional one, and the test can be performed at the same timing as the actual operation of the panel to be tested, so that the object of the present invention is completely achieved.

Hereinafter, the present invention will be explained in more detail with reference to the drawings. FIG. 2 is a block diagram showing an embodiment of the panel testing machine according to the present invention. The testing machine CPU 7, which is the same as the CPU of the panel to be tested 40, has a direct path interface with the panel to be tested 4, and other input/outputs are configured to interface with the general-purpose input/output port 3. When testing a panel, it is necessary to give specific operation commands to the panel under test 4, but in this tester, the company's tester CPU
7 directly to the panel under test via the path interface. This way of giving operation instructions can be exactly the same as the operation instructions in rounding and actual operation, where there is no general-purpose input/output port between them. In addition, the interface timing is also exactly the same, and the panel under test 4 can be driven under exactly the same interface conditions as in reality.

The panel under test 4 performs a prescribed operation and outputs a specific value to the general input/output line 6. The tester CPU 2 reads this value via the general-purpose input/output port 3, compares it with the expected value, and determines whether the result is acceptable or not and displays it.

Note that this figure shows an 8-channel data transmitter/receiver.

As explained above in detail, the panel testing machine according to the present invention is equipped with the same a-choice as that which drives the panel under test,
By configuring the path interface so that it can be directly interfaced, it is possible to test the panel under test under exactly the same conditions as in actual operation, which eliminates the complexity of controlling general-purpose input/output ports during testing. Conventional problems such as these can also be solved.

[Brief explanation of the drawing]

The first figure is a block diagram of a conventional panel testing machine, and the second figure is a block diagram showing an embodiment of a panel testing machine according to the present invention. 1... Panel tester 2... CPU3... General purpose input/output port 4... Panel under test 5... Path interface 6... General input/output chain 7... CPU
8...Data Transmitter/Receiver I\jlliF Applicant: NEC Corporation Agent Patent Attorney: Inoro
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Claims (1)

[Claims] A CPU that is the same as the CPU that drives the panel under test, gives commands to the panel under test to perform predetermined operations, compares data from the panel under test with expected values, and determines the quality of the results. It includes a general-purpose input/output port, a clock oscillator, and a data transmitter/receiver, and when testing the panel under test, the path of its own CPU can be directly interfaced with the path of the panel under test, and the general-purpose A panel tester characterized in that the input/output ports, the clock oscillator, and the data transmitter/receiver are also configured to interface with other inputs/outputs of the panel under test, and further includes a display for displaying the determination results.