Patent ID: 11875737
Assignee: MACROBLOCK, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The scan-type display apparatus as claimed in claim 3, wherein:
with respect to each of said scan driving circuits,
said scan driving circuit has an operation cycle that includes a scan time interval and a clamp time interval,
the scan signal corresponding to said scan driving circuit is at a voltage level corresponding to conduction of said scan switch during the scan time interval, and is at a voltage level corresponding to non-conduction of said scan switch during the clamp time interval, and
when the detection signals cooperatively indicate that none of said LEDs connected to said scan line corresponding to said scan driving circuit is short circuited, the clamp signal corresponding to said scan driving circuit is at a voltage level corresponding to non-conduction of said clamp switch during the scan time interval, and is at a voltage level corresponding to conduction of said clamp switch during the clamp time interval; and
with respect to each of said data driving circuits,
the detection timing signal includes a plurality of pulses, which respectively correspond to said scan driving circuits, each of which appears in the scan time interval of said scan driving circuit corresponding to the pulse, and each of which has a width smaller than a time length of the scan time interval of said scan driving circuit corresponding to the pulse, and
said detector detects whether any one of said LEDs connected to said data line corresponding to said data driving circuit is short circuited while within the pulses of the detection timing signal, and does not perform detection while outside of the pulses of the detection timing signal.