# US 11,310,383 B2 · Lid position determinations based on scans of zones

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- Number: US 11,310,383 B2
- Document ID: US11310383B2
- Status: Granted
- Kind: B2
- Application number: 17/296,621
- Filed: 2019-07-15
- Published: 2022-01-06
- Granted: 2022-04-19
- Earliest claimed: 2019-07-15
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Ai-Qiang Yang; Choon Hwee Yap; Tiang Kok Hun; Kuan Soon Oong; Ganlin Tang
- Web page: https://patentgrep.com/patent/US11310383B2

## CPC

- H04N 1/00777: {Inhibiting, e.g. an operation}
- H04N 1/00551: {Top covers or the like}
- H04N 1/00681: {Detecting the presence, position or size of a sheet or correcting its position before scanning (H04N1/047 takes precedence; mode signalling H04N1/333; skew detection or correction in image signals H04N1/3878)}
- H04N 1/00687: {Presence or absence}
- H04N 1/00689: {Presence}
- H04N 1/00732: {Mechanical detectors}
- H04N 1/00734: {Optical detectors}
- H04N 1/0075: {Detecting a change in reflectivity}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A first zone and a second zone of a scan surface may be scanned by an image sensor. A lid may be coupled to the scan surface and have an open position and a closed position, the lid being to cover the first zone and the second zone when in the closed position. The position of a lid may be determined based on a comparison of a scan of the first zone and a scan of the second zone.

## Claims

### Claim 1

An apparatus comprising:
a scan surface comprising:
a first zone; and
a second zone;
an image sensor to scan the scan surface;
a lid coupled to the scan surface, the lid having an open position and a closed position relative to the scan surface, the lid to cover the first zone and the second zone when the lid is in the closed position; and
a controller to cause the image sensor to scan the first zone and the second zone, the controller to determine whether the lid is in the closed position based on a comparison of the scan of the first zone and the scan of the second zone.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the lid includes a flag to indicate a status of an automatic document feed, the flag covering a portion of the first zone when the lid is in the closed position.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the controller is to determine whether a document is present in the automatic document feed based on the scan of the first zone.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the lid comprises a hole, the hole covering a portion of the first zone when the lid is in the closed position.

### Claim 5 (depends on 1)

The apparatus of claim 1, the scan surface comprising a third zone, the lid comprising a flag to indicate a status of a document feed, the flag to cover the third zone when the lid is in the closed position.

### Claim 6

A non-transitory computer-readable medium to store machine-readable instructions that, when executed by a processor, cause the processor to:
scan a first zone of a scan surface;
scan a second zone of the scan surface;
compare the scan of the first zone with the scan of the second zone; and
determine whether a lid is open based on the comparison.

### Claim 7 (depends on 6)

The computer-readable medium of claim 6, wherein execution of the instructions by the processor causes the processor to scan a third zone of the scan surface to generate an image of a document to be scanned, wherein the third zone is non-overlapping with the first zone.

### Claim 8 (depends on 6)

The computer-readable medium of claim 6, wherein the comparison of the scan of the first zone with the scan of the second zone includes a comparison of a first brightness of the scan of the first zone with a second brightness of the scan of the second zone.

### Claim 9 (depends on 6)

The computer-readable medium of claim 6, wherein execution of the instructions by the processor causes the processor to determine whether a document is present in a document feed based on the scan of the first zone.

### Claim 10 (depends on 6)

The computer-readable medium of claim 6, wherein execution of the instructions by the processor causes the processor to scan the first zone using a green light.

### Claim 11

A method comprising:
scanning a line of a scan surface;
comparing a first zone of the line with a second zone of the line; and
determining a lid is open based on the comparison, the lid being to cover the scan surface.

### Claim 12 (depends on 11)

The method of claim 11 comprising illuminating a control in response to the determination.

### Claim 13 (depends on 11)

The method of claim 11, wherein scanning the line includes scanning a one pixel width line.

### Claim 14 (depends on 11)

The method of claim 11 comprising:
determining a document is present in a document feed based on the first zone; and
scanning the document.

### Claim 15 (depends on 14)

The method of claim 14, wherein the scanning the document is based on a determination that the lid is closed.