Patent ID: 11972409
Assignee: NCR VOYIX CORPORATION
Field: IT methods for management (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A system for verifying a transaction at a checkout terminal by converting an audible environmental signal to a transmission signal, the checkout terminal in communication with a processor and a memory, comprising:
an audio sensor detecting the audible environmental signal generated during the transaction of an item at the checkout terminal as the audible environmental signal is generated by the checkout terminal when the item is scanned by a barcode scanner of the checkout terminal, the audio sensor operatively in communication with the processor, wherein the audible environment signal representing a scanner status associated with the barcode scanner when the item is detected by the barcode scanner during the transaction;
a transmission device, operatively in communication with the processor, wherein the transmission device generates the transmission signal as a response to the audible environmental signal detected by the audio sensor; and
a camera device, operatively in communication with a computing device, positioned to record the transmission signal in multiple images during the transaction, wherein the computing device verifies the transaction based on the recorded transmission signal, extracts the scanner status as the audible environmental signal from the recorded transmission signal depicted in the multiple images, and correlates the recorded transmission signal with the item and the transaction;
wherein the transmission device is monitored from the transmission signal based on an estimated light level and black level detected in the multiple images and the transmission device is automatically calibrate when the light level and the black level are outside the estimated light level and black level, wherein the transmission device comprises pairs of light emitting diodes (LEDS), and wherein at least at least one of the pairs is always on, wherein a determination as to which pair is on and which pair is off is based on pixel intensity scores and ratios of the intensity scores between the pairs, wherein when a given ratio of intensity is greater than 1 the corresponding pair associated with a numerator in the given ratio is on and the corresponding pair associated with the denominator is off, and when a corresponding ratio approaches 1 an error condition is raised indicating a problem was detected for the transmission device.