# US 12,216,770 B2 · Signal processing device and signal processing method

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- Number: US 12,216,770 B2
- Document ID: US12216770B2
- Status: Granted
- Kind: B2
- Application number: 17/986,114
- Filed: 2022-11-14
- Published: 2023-03-09
- Granted: 2025-02-04
- Earliest claimed: 2017-06-16
- Assignees: Sony Semiconductor Solutions Corporation
- Applicants: Sony Semiconductor Solutions Corporation
- Inventors: Tatsuya Kaneko; Yuichi Motohashi
- Web page: https://patentgrep.com/patent/US12216770B2

## CPC

- G06F 21/602: {Providing cryptographic facilities or services}
- H04W 4/48: for in-vehicle communication
- G06F 21/60: Protecting data
- G06V 20/56: exterior to a vehicle by using sensors mounted on the vehicle
- G11B 20/10: Digital recording or reproducing
- H04L 9/16: the keys or algorithms being changed during operation
- H04L 9/32: including means for verifying the identity or authority of a user of the system {or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials}
- H04L 63/0428: {wherein the data content is protected, e.g. by encrypting or encapsulating the payload}
- H04L 63/0435: {wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption (cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06)}
- H04L 63/08: {for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32)}
- H04L 63/083: {using passwords (cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226)}
- H04L 63/1466: {Active attacks involving interception, injection, modification, spoofing of data unit addresses, e.g. hijacking, packet injection or TCP sequence number attacks}
- H04N 21/8355: involving usage data, e.g. number of copies or viewings allowed
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The present technology relates to a signal processing device, a signal processing method, and a program for enabling reduction of a processing load while ensuring safety. The signal processing device includes a control unit configured to acquire designation information indicating a designated portion to be encrypted in output data and an encryption processing unit configured to encrypt the designated portion indicated by the designation information in the output data using a key. Furthermore, the designated portion indicated by the designation information is changed with time. The present technology can be applied to an in-vehicle camera.

## Claims

### Claim 1

An imaging device, comprising:
a plurality of pixels configured to generate a signal of an image data;
an encryption processing unit configured to output encrypted data based on a portion of the image data; and
an image output unit configured to output one frame of the image data and the encrypted data in a format, wherein
the format includes:
a frame start region,
a packet header region,
a first region for the one frame of the image data,
a second region for the encrypted data,
a packet footer region, and
a frame end region,
the first region is between the packet header region and the packet footer region, and
the second region is between the packet header region and the packet footer region.

### Claim 2 (depends on 1)

The imaging device of claim 1, wherein the second region is subsequent to the first region.

### Claim 3 (depends on 1)

The imaging device of claim 1, wherein the portion of the image data extends along a column direction of the image data.

### Claim 4 (depends on 1)

The imaging device of claim 1, wherein the encryption processing unit is further configured to generate the encrypted data by encryption of a part of an encryption region from the portion of the image data.

### Claim 5 (depends on 4)

The imaging device of claim 4, wherein the portion of the image data includes a plurality of encryption regions.

### Claim 6 (depends on 4)

The imaging device of claim 4, wherein the encryption region from the portion of the image data is changed at fixed intervals.

### Claim 7 (depends on 4)

The imaging device of claim 4, wherein the encryption region from the portion of the image data is changed at random timing.

### Claim 8 (depends on 7)

The imaging device of claim 7, wherein
the encryption processing unit is further configured to receive encryption region designation information from a vehicle control unit of a vehicle, and
the vehicle control unit:
changes the encryption region, and
generates the encryption region designation information indicating a new encryption region subsequent to the change.

### Claim 9 (depends on 8)

The imaging device of claim 8, wherein the vehicle control unit changes at least one of a position of the encryption region, a size of the encryption region, or a number of encryption regions.

### Claim 10 (depends on 8)

The imaging device of claim 8, wherein the vehicle control unit:
transmits the encryption region designation information to the imaging device, and
receives the image data and the encrypted data from the image output unit of the imaging device.

### Claim 11 (depends on 1)

The imaging device of claim 1, wherein the portion of the image data includes a region that includes an important object for safety.

### Claim 12 (depends on 11)

The imaging device of claim 11, wherein the important object for the safety is a vehicle.

### Claim 13 (depends on 1)

The imaging device of claim 1, wherein a region including an important object for safety is set as an encryption region corresponding to the portion of the image data.

### Claim 14 (depends on 13)

The imaging device of claim 13, wherein the important object for the safety is a vehicle.

### Claim 15

A signal processing device, comprising:
a control unit configured to receive a format from an imaging device, wherein the imaging device includes:
a plurality of pixels that generates a signal of an image data;
an encryption processing unit that outputs encrypted data based on a portion of the image data; and
an image output unit that outputs one frame of the image data and the encrypted data in the format, wherein
the format includes:
a frame start region,
a packet header region,
a first region for the one frame of the image data,
a second region for the encrypted data,
a packet footer region, and
a frame end region,
the first region is between the packet header region and the packet footer region, and
the second region is between the packet header region and the packet footer region.

### Claim 16 (depends on 15)

The signal processing device of claim 15, wherein the second region is subsequent to the first region.

### Claim 17 (depends on 15)

The signal processing device of claim 15, wherein the portion of the image data extends along a column direction of the image data.

### Claim 18 (depends on 15)

The signal processing device of claim 15, wherein the portion of the image data includes one of an encryption region or a plurality of encryption regions.

### Claim 19 (depends on 18)

The signal processing device of claim 18, wherein the encryption region from the portion of the image data is changed at fixed intervals.

### Claim 20 (depends on 18)

The signal processing device of claim 18, wherein the encryption region from the portion of the image data is changed at random timing.