# US 12,015,423 B2 · Systems and methods for decoding transition encoded data with protected key

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- Number: US 12,015,423 B2
- Document ID: US12015423B2
- Status: Granted
- Kind: B2
- Application number: 18/329,429
- Filed: 2023-06-05
- Published: 2023-10-05
- Granted: 2024-06-18
- Earliest claimed: 2021-07-29
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Aliazam Abbasfar; Amir Amirkhany
- Web page: https://patentgrep.com/patent/US12015423B2

## CPC

- H03M 5/145: {Conversion to or from block codes or representations thereof}
- H03M 13/11: using multiple parity bits
- H03M 13/356: {Unequal error protection [UEP]}
- H04L 1/0041: {Arrangements at the transmitter end}
- H04L 1/007: {Unequal error protection (for format H04L1/0078; for codes per se H03M13/35)}
- H04L 1/0086: {Unequal error protection (H04L27/00 and H04L1/004 take precedence for layer 1/2 aspects, e.g. bit loading)}
- H03M 13/13: Linear codes
- H03M 13/19: Single error correction without using particular properties of the cyclic codes, e.g. Hamming codes, extended or generalised Hamming codes
- H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for encoding may include receiving, at an encoder, a series of data bits, performing, at the encoder, first transition encoding on the data bits to generate an encoded series of data bits based on a key, performing, at the encoder, protection encoding on the key to generate key protection data, performing, at the encoder, second transition encoding on the key protection data to generate encoded key protection data, and transmitting an encoded series of transmission bits to a receiver, the encoded series of transmission bits including the encoded series of data bits and the encoded key protection data.

## Claims

### Claim 1

A method by an electronic device configured to decode data received from an encoder, the method comprising:
receiving, by a decoder of the electronic device, transmission bits comprising a transition encoded series of data bits and a transition encoded key protection data;
decoding, by the decoder, the transition encoded key protection data to generate a key protection data;
determining that a key is accurate based on the key protection data; and
decoding, by the decoder, the transition encoded series of data bits to generate decoded series of data bits, based on the accurate key.

### Claim 2 (depends on 1)

The method of claim 1, wherein the transition encoded key protection data comprises an inverted parity bit.

### Claim 3 (depends on 2)

The method of claim 2, wherein the generating the key protection data comprises inverting the inverted parity bit.

### Claim 4 (depends on 3)

The method of claim 3, wherein a most significant bit (MSB) of the transition encoded key protection data comprises the key protection data, the method further comprising replacing the MSB with a constant to generate the key.

### Claim 5 (depends on 4)

The method of claim 4, wherein the constant is a zero.

### Claim 6 (depends on 1)

The method of claim 1, wherein the key protection data comprises a plurality of parity bits.

### Claim 7 (depends on 6)

The method of claim 6, wherein the plurality of parity bits are based on a Hamming code.

### Claim 8 (depends on 6)

The method of claim 6, wherein the generating the key protection data comprises inverting at least one of a plurality of inverted parity bits.

### Claim 9 (depends on 8)

The method of claim 8, wherein an MSB of the transition encoded key protection data comprises the key protection data, the method further comprising replacing the MSB with a constant to generate the key.

### Claim 10 (depends on 9)

The method of claim 9, wherein the decoding the transition encoded key protection data further comprises removing one or more bits of the inverted parity bits from a front of the key and removing one or more bits of the inverted parity bits from an end of the key.

### Claim 11

A decoder in an electronic device configured to decode data received from an encoder, comprising:
an input configured to receive a series of transmission bits comprising a transition encoded series of data bits and a transition encoded key protection data; and
a processor configured to execute operations comprising:
decoding the transition encoded key protection data to generate a key protection data;
determining that a key is accurate based on the key protection data; and
decoding the transition encoded series of data bits to generate decoded series of data bits, based on the accurate key.

### Claim 12 (depends on 11)

The decoder of claim 11, wherein the transition encoded key protection data comprises an inverted parity bit.

### Claim 13 (depends on 12)

The decoder of claim 12, wherein the generating the key protection data comprises inverting the inverted parity bit.

### Claim 14 (depends on 13)

The decoder of claim 13, wherein a most significant bit (MSB) of the transition encoded key protection data comprises the key protection data, the operations further comprising replacing the MSB with a constant to generate the key.

### Claim 15 (depends on 14)

The decoder of claim 14, wherein the constant is a zero.

### Claim 16 (depends on 11)

The decoder of claim 11, wherein the key protection data comprises a plurality of parity bits.

### Claim 17 (depends on 16)

The decoder of claim 16, wherein the plurality of parity bits are based on a Hamming code.

### Claim 18 (depends on 16)

The decoder of claim 16, wherein the generating the key protection data comprises inverting at least one of a plurality of inverted parity bits.

### Claim 19 (depends on 18)

The decoder of claim 18, wherein an MSB of the transition encoded key protection data comprises the key protection data, the operations further comprising replacing the MSB with a constant to generate the key.

### Claim 20 (depends on 19)

The decoder of claim 19, wherein the decoding the transition encoded key protection data further comprises removing one or more bits of the inverted parity bits from a front of the key and removing one or more bits of the inverted parity bits from an end of the key.