# US 2026/0100829 A1 · Electronic device and control method thereof

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2026/0100829 A1
- Document ID: US20260100829A1
- Status: Published application
- Kind: A1
- Application number: 19/317,920
- Filed: 2025-09-03
- Published: 2026-04-09
- Earliest claimed: 2024-10-04
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Seungyong JOO; Seona PARK; Hyunjun AN
- Web page: https://patentgrep.com/patent/US20260100829A1

## CPC

- H04L 9/088: {Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms (network architectures or network communication protocols for using time-dependent keys in a packet data network H04L63/068)}
- G06F 21/10: Protecting distributed programs or content, e.g. vending or licensing of copyrighted material (protection in video systems or pay television H04N7/16) {; Digital rights management [DRM]}
- G06Q 30/02: Marketing; Price estimation or determination; Fundraising
- G06Q 30/0251: Targeted advertisements
- G06Q 30/0272: Period of advertisement exposure
- H04L 9/40: Network security protocols
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR

## Abstract

A method of an electronic device communicated with a server device, includes: receiving playback schedule information that includes a plurality of pieces of content, a disclosure restriction status, and validity period information, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content; identifying disclosure restriction content to which encryption is applied among the plurality of pieces of content; transmitting a decryption request for the disclosure restriction content to the server device when a time before a predetermined time is reached based on a playback start time of the disclosure restriction content; when an encryption key corresponding to the disclosure restriction content is received from the server device, decrypting the disclosure restriction content using the encryption key; and displaying, on the display, the plurality of pieces of content including the decrypted disclosure restriction content based on the validity period information.

## Claims

### Claim 1

An electronic device comprising:
communication circuitry;
a display;
a memory configured to store instructions; and
one or more processors configured to comprise a processing circuitry,
wherein, when the instructions are individually or collectively executed, the one or more processors cause the electronic device to:
receive, through the communication circuitry, playback schedule information that comprises a plurality of pieces of content, a disclosure restriction status, and validity period information, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content,
identify, among the plurality of pieces of content, disclosure restriction content to which an encryption is applied,
when a predetermined time, which is prior to a disclosure start time of the disclosure restriction content, is reached, transmit a decryption request for the disclosure restriction content to the server device through the communication circuitry,
when an encryption key corresponding to the disclosure restriction content is received from the server device, decrypt the disclosure restriction content using the encryption key, and
display, on the display, the plurality of pieces of content comprising the decrypted disclosure restriction content based on the validity period information.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein, when individually or collectively executed by the one or more processors, the instructions further cause the electronic device to:
store, in the memory, the playback schedule information that comprises the plurality of pieces of content, the disclosure restriction status, and the validity period information that are received through the communication circuitry, and
delete the disclosure restriction content from the memory when a deletion request for the disclosure restriction content is received from the server device after a validity period of the disclosure restriction content expires.

### Claim 3 (depends on 1)

The electronic device of claim 1, wherein the validity period information comprises at least one of the disclosure start time and a disclosure end time corresponding to each of the plurality of pieces of content, and
wherein the disclosure restriction status comprises information on whether the content is played before a validity period corresponding to the content is reached.

### Claim 4 (depends on 1)

The electronic device of claim 1, wherein the predetermined time is determined based on at least one of a capacity of the disclosure restriction content or a network environment.

### Claim 5 (depends on 1)

The electronic device of claim 1, wherein the electronic device is a digital signage device, and
wherein the plurality of pieces of content comprise advertising content.

### Claim 6

A server device comprising:
communication circuitry;
a memory configured to store instructions; and
one or more processors configured to comprise a processing circuitry,
wherein, when the instructions are individually or collectively executed, the one or more processors cause the server device to:
when a plurality of pieces of content, disclosure restriction status, and validity period information are received, identify, among the plurality of pieces of content, disclosure restriction content with a disclosure restriction set, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content,
encrypt the disclosure restriction content using an encryption key,
acquire playback schedule information of the plurality of pieces of content comprising the encrypted disclosure restriction content,
transmit the playback schedule information to the electronic device through the communication circuitry, and
when a request for decryption of the disclosure restriction content is received from the electronic device, transmit the encryption key corresponding to the disclosure restriction content to the electronic device through the communication circuitry.

### Claim 7 (depends on 6)

The server device of claim 6, wherein the validity period information comprises at least one of a disclosure start time or a disclosure end time corresponding to each of the plurality of pieces of content, and
wherein the disclosure restriction status comprises information on whether the content is played before a validity period corresponding to the content is reached.

### Claim 8 (depends on 6)

The server device of claim 6, wherein, when individually or collectively executed by the one or more processors, the instructions further cause the server device to:
identify, among the plurality of pieces of content, the disclosure restriction content based on disclosure restriction information for activating disclosure restriction, and
store the identified encryption key in the memory.

### Claim 9 (depends on 6)

The server device of claim 6, wherein the electronic device is a digital signage device,
wherein when individually or collectively executed by the one or more processors, the instructions further cause the server device to receive, from a plurality of advertising business servers, a plurality of advertising contents, the disclosure restriction status, and the validity period information, and
wherein the disclosure restriction status and the validity period information correspond to each of the plurality of advertising contents.

### Claim 10 (depends on 6)

The server device of claim 6, wherein, when executed individually or collectively by the one or more processors, the instructions further cause the server device to convert the validity period information corresponding to the plurality of pieces of content into coordinated universal time (UTC) information of a country where the electronic device is located, and
transmit, to the electronic device, the playback schedule information comprising the converted validity period information.

### Claim 11

A method of an electronic device comprising:
receiving playback schedule information that comprises a plurality of pieces of content, a disclosure restriction status, and validity period information, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content;
identifying disclosure restriction content to which encryption is applied among the plurality of pieces of content;
transmitting a decryption request for the disclosure restriction content to the server device when a time before a predetermined time is reached based on a playback start time of the disclosure restriction content;
when an encryption key corresponding to the disclosure restriction content is received from the server device, decrypting the disclosure restriction content using the encryption key; and
displaying, on the display, the plurality of pieces of content comprising the decrypted disclosure restriction content based on the validity period information.

### Claim 12 (depends on 11)

The method of claim 11, further comprising:
storing, in the electronic device, the playback schedule information that comprises the plurality of pieces of content, the disclosure restriction status, and the validity period information, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content received from the server device; and
deleting the disclosure restriction content from the electronic device when a deletion request for the disclosure restriction content is received from the server device after a validity period of the disclosure restriction content expires.

### Claim 13 (depends on 11)

The method of claim 11, wherein the validity period information comprises at least one of a disclosure start time and a disclosure end time that correspond to each of the plurality of pieces of content, and
wherein the disclosure restriction status comprises information on whether the content is played before a validity period corresponding to the content is reached.

### Claim 14 (depends on 11)

The method of claim 11, wherein the predetermined time is determined based on at least one of a capacity of the disclosure restriction content or a network environment.

### Claim 15 (depends on 11)

The method of claim 11,
wherein the electronic device is a digital signage device, and
wherein the plurality of pieces of content comprise advertising content.

### Claim 16

A non-transitory computer-readable storage medium storing a computer command that, when executed by a processor of an electronic device, causes the electronic device to perform an operation, wherein the operation comprises:
receiving playback schedule information that comprises a plurality of pieces of content, a disclosure restriction status, and validity period information, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content;
identifying disclosure restriction content to which encryption is applied among the plurality of pieces of content;
transmitting, to the server device, a decryption request for the disclosure restriction content when a time before a predetermined time is reached based on a playback start time of the disclosure restriction content;
when an encryption key corresponding to the disclosure restriction content is received from the server device, decrypting the disclosure restriction content using the encryption key; and
displaying, on the display, the plurality of pieces of content comprising the decrypted disclosure restriction content based on the validity period information.

### Claim 17 (depends on 16)

The non-transitory computer readable medium of claim 16,
storing, in the electronic device, the playback schedule information that comprises the plurality of pieces of content, the disclosure restriction status, and the validity period information, wherein the disclosure restriction status and the validity period information correspond to each of the plurality of pieces of content received from the server device; and
deleting the disclosure restriction content from the electronic device when a deletion request for the disclosure restriction content is received from the server device after a validity period of the disclosure restriction content expires.

### Claim 18 (depends on 16)

The non-transitory computer readable medium of claim 16,
wherein the validity period information comprises at least one of a disclosure start time and a disclosure end time that correspond to each of the plurality of pieces of content, and
wherein the disclosure restriction status comprises information on whether the content is played before a validity period corresponding to the content is reached.

### Claim 19 (depends on 16)

The non-transitory computer readable medium of claim 16,
wherein the predetermined time is determined based on at least one of a capacity of the disclosure restriction content or a network environment.

### Claim 20 (depends on 16)

The non-transitory computer readable medium of claim 16,
wherein the electronic device is a digital signage device, and
wherein the plurality of pieces of content comprise advertising content.