Patent ID: 7236903

Claim:
A testing device for testing an electronic device, comprising: a pattern generator operable to generate a test pattern supplied to the electronic device and an expectation signal sequence, which the electronic device is expected to output when the test pattern is supplied to the electronic device; a comparison unit operable to compare an output signal sequence output from the electronic device, which is supplied with the test pattern, with the expectation signal sequence; an acquisition controlling unit operable to cause said comparison unit to start comparing the output signal sequence and the expectation signal sequence when detecting an output header, which indicates the start of a comparison between the output signal sequence and the expectation signal sequence using said comparison unit, from the output signal sequence; and a comparison result outputting unit operable to acquire a comparison result from said comparison unit according to an instruction of said acquisition controlling unit, wherein a quality of the electronic device is decided based on the acquired comparison result, and a test result is output to the pattern generator.