Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.

Abstract: A vending machine monitoring method used in a vending machine monitoring system, which includes an automatic vending machine and a monitoring system that is attached to the automatic vending machine and uses a microprocessor to read in data signals transmitted between the main controller and peripheral apparatus (card-slide unit, bill acceptor, license recognition unit and coin slot unit) of the automatic vending machine through a connection interface, to process fetched data signals into waveform signals, to indicate any error message through an indicator light module, and to report processed waveform signals to an external remote system through a transmission module for display and further analysis and check of income.

Abstract: A bill acceptor for use in an automatic vending machine for selling controlled commodities is disclosed to include a bill acceptor body having an insertion slot for the insertion of a license as well as a bill and a passage extending from the insertion slot, a transmission mechanism for carrying each inserted license and bill to a respective recognition position for recognition and returning each inserted invalid license to the insertion slot, and a license and bill recognition unit that comprises a sampling module for picking up an image of each inserted license and recognizing the authenticity of the license and the data of the date of birth carried on the license and an optical recognition module for recognizing the authenticity and value of each inserted bill.

Abstract: A bill dispenser is disclosed to include an optical transmitter module and an optical receiver module for measuring the transmittance of the bill being dispensed toward the bill outlet, and a control circuit for comparing the transmittance measured by the optical receiver module with a reference value and controlling the operation of the dispensing roller set of the bill dispenser subject to the comparison result, assuring accurate dispensing of one single bill at a time.

Abstract: A coin outlet unit is disclosed to include a casing having a coin outlet, and an adjustment structure for adjusting the size of the coin outlet. The adjustment structure positioning spaces arranged in a line perpendicular to the extending direction of the coin outlet, locating holes arranged in parallel to the positioning spaces, an adjustment block, which has a bottom rod selectably inserted into one of the positioning spaces and a plurality of adjustment holes, and a locking member insertable through the adjustment holes into the locating holes to lock the adjustment block.

Abstract: A coin outlet unit is disclosed to include a casing having a coin outlet, and an adjustment structure for adjusting the size of the coin outlet. The adjustment structure positioning spaces arranged in a line perpendicular to the extending direction of the coin outlet, locating holes arranged in parallel to the positioning spaces, an adjustment block, which has a bottom rod selectably inserted into one of the positioning spaces and a plurality of adjustment holes, and a locking member insertable through the adjustment holes into the locating holes to lock the adjustment block.

Abstract: Disclosed is a banknote output control device, which includes an optical transmitter module controlled to emit light across the banknote delivery path, an optical receiver module controlled to detect light passing from the optical transmitter module across the banknote delivery path, and a control circuit, which continues the output of a banknote when the value of the detected signal from the optical receiver module is approximately equal to the predetermined reference value, or reverses the banknote delivering direction when the value of the detected signal from the optical receiver module differs from the predetermined reference value significantly.

Abstract: A chip card acceptor is disclosed to include a housing having a front insertion hole for the insertion of a card or chip card, an electric connector mounted inside the housing for contacting the inserted card, a circuit board mounted inside the housing and electrically connected to the electric connector for reading storage data from the inserted card and transmitting fetched data to a main unit of an external system, and sensor means installed in the circuit board for verifying the authenticity of the inserted card for enabling the detection result and the storage data of the inserted card to be transmitted through the circuit board to the main unit of the external system for further processing.