# US 2026/0171118 A1 · High-bandwidth memory-based holography processing apparatus and method

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- Number: US 2026/0171118 A1
- Document ID: US20260171118A1
- Status: Published application
- Kind: A1
- Application number: 19/407,096
- Filed: 2025-12-03
- Published: 2026-06-18
- Earliest claimed: 2024-12-18
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Electronics and Telecommunications Research Institute
- Inventors: Won-Ok KWON
- Web page: https://patentgrep.com/patent/US20260171118A1

## CPC

- G11B 7/0065: Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
- G11C 13/042: {using information stored in the form of interference pattern}
- 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)
- G11C: STATIC STORES (semiconductor memory devices H10B)

## Abstract

Disclosed herein are a High-Bandwidth Memory (HBM)-based holography processing apparatus and method. The HBM-based holography processing apparatus includes a holography row processing unit configured to receive image data and output row data of complex numbers obtained by performing a Fast Fourier Transform (FFT) on the image data, a HBM configured to store the output row data as data for each color and for each depth, and a holography column processing unit configured to read the stored row data using a column address and perform FFT processing on the read row data.

## Claims

### Claim 1

A High-Bandwidth Memory (HBM)-based holography processing apparatus, comprising:
a holography row processing unit configured to receive image data and output row data of complex numbers obtained by performing a Fast Fourier Transform (FFT) on the image data;
a HBM configured to store the output row data as data for each color and for each depth; and
a holography column processing unit configured to read the stored row data using a column address and perform FFT processing on the read row data,
wherein the HBM is configured to allow writing to one of at least two channels for each color or depth while reading from a remaining channel.

### Claim 2 (depends on 1)

The HBM-based holography processing apparatus of claim 1, wherein the HBM is configured to:
store row FFT data for each channel, and
when a size of stored data for each color or depth is larger than a channel size, allocate at least two channels for each of the colors or depths.

### Claim 3 (depends on 2)

The HBM-based holography processing apparatus of claim 2, wherein the holography row processing unit is configured to write row data to one of the at least two channels for each color or depth, and then determines whether a remaining channel is available, and writes the row data to the remaining channel when it is determined that the remaining channel is available.

### Claim 4 (depends on 2)

The HBM-based holography processing apparatus of claim 2, wherein the holography row processing unit is configured to, when it is determined that the remaining channel is unavailable, wait until reading of column data is completed, and then write the row data to the remaining channel when reading of the column data is completed.

### Claim 5 (depends on 2)

The HBM-based holography processing apparatus of claim 2, wherein the holography column processing unit is configured to, after reading of column data from one of the at least two channels is completed for each color or depth, immediately perform reading from the remaining channel.

### Claim 6

A HBM-based holography processing method, comprising:
receiving image data and outputting row data of complex numbers obtained by performing a Fast Fourier Transform (FFT) on the image data;
writing the output row data to a HBM, as data for each color and for each depth;
reading the row data stored in the HBM using a column address; and
performing FFT processing on the read column data,
wherein the HBM is configured to allow writing to one of at least two channels for each color or depth while reading from a remaining channel.

### Claim 7 (depends on 6)

The HBM-based holography processing method of claim 6, wherein the HBM is configured to:
store row FFT data for each channel, and
when a size of stored data for each color or depth is larger than a channel size, allocate at least two channels for each color or depth.

### Claim 8 (depends on 6)

The HBM-based holography processing method of claim 6, wherein writing the output row data comprises:
writing the row data to one of the at least two channels for each color or depth;
determining whether the remaining channel is available; and
writing the row data to the remaining channel when it is determined that the remaining channel is available.

### Claim 9 (depends on 8)

The HBM-based holography processing method of claim 8, wherein writing the output row data further comprises:
when it is determined that the remaining channel is unavailable, waiting until reading of column data is completed; and
writing the row data to the remaining channel when reading of the column data is completed.

### Claim 10 (depends on 6)

The HBM-based holography processing method of claim 6, wherein reading the row data comprises:
after reading of column data from one of the at least two channels is completed for each color or depth, immediately performing reading from the remaining channel.