World's Best Scientists 2026 revealed!
Tomoyuki Okada

Tomoyuki Okada

D-Index & Metrics

Engineering and Technology

D-Index
37
Citations
6497
World Ranking
8317
National Ranking
175

Tomoyuki Okada publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Tomoyuki Okada sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 278 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Tomoyuki Okada D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Tomoyuki Okada sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 37 D-Index — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Operating system
  • Programming language
  • Artificial intelligence

His primary areas of study are Computer graphics, Optical disc, Computer hardware, Artificial intelligence and Object. His studies deal with areas such as Timestamp, Frame and Multiplexing as well as Computer graphics. His Optical disc research is multidisciplinary, incorporating perspectives in Bitstream, Information retrieval and Data structure.

His research in Computer hardware tackles topics such as Audio signal which are related to areas like Gapless playback. The concepts of his Artificial intelligence study are interwoven with issues in Subtitle, Computer vision and Character encoding. As part of one scientific family, he deals mainly with the area of Object, narrowing it down to issues related to the Video capture, and often Byte.

His most cited work include:

  • Method and an apparatus for reproducing bitstream having non-sequential system clock data seamlessly therebetween (298 citations)
  • Reproduction device, optical disc, recording medium, program, and reproduction method (188 citations)
  • Optical disc, recording apparatus, and computer-readable recording medium (183 citations)

What are the main themes of his work throughout his whole career to date?

Tomoyuki Okada spends much of his time researching Computer graphics, Optical disc, Computer hardware, Multiplexing and Decoding methods. In the field of Computer graphics, his study on Graphics overlaps with subjects such as Reproduction. His Graphics research integrates issues from Value, State, Network packet and Interactive displays.

His study in Optical disc is interdisciplinary in nature, drawing from both Object, Computer vision, Artificial intelligence and Reading. He interconnects Bitstream, Process, Real-time computing and Encoding in the investigation of issues within Computer hardware. His research on Decoding methods often connects related areas such as Random access.

He most often published in these fields:

  • Computer graphics (35.62%)
  • Optical disc (33.05%)
  • Computer hardware (28.54%)

What were the highlights of his more recent work (between 2009-2015)?

  • Computer graphics (35.62%)
  • Decoding methods (16.95%)
  • Multiplexing (19.96%)

In recent papers he was focusing on the following fields of study:

Tomoyuki Okada spends much of his time researching Computer graphics, Decoding methods, Multiplexing, Optical disc and Computer hardware. In the subject of general Computer graphics, his work in Graphics is often linked to Flag, thereby combining diverse domains of study. The Decoding methods study combines topics in areas such as Audio signal, Sub-band coding, Random access, Voice data and FLAGS register.

Tomoyuki Okada has researched Multiplexing in several fields, including Algorithm, Encapsulation, Buffer and Network packet. His biological study spans a wide range of topics, including Reading and Stereoscopy, Artificial intelligence, Computer vision. Tomoyuki Okada has included themes like Coding decoding, Process, Encoding, Frame and State in his Computer hardware study.

Between 2009 and 2015, his most popular works were:

  • HEAT SHIELD BLOCK AND HEAT SHIELD CEMENT COMPOSITION (6 citations)
  • Recording method, reproduction device, method for executing reproduction (6 citations)
  • Moving picture generation apparatus, coding apparatus, decoding apparatus and multiplexing apparatus (5 citations)

In his most recent research, the most cited papers focused on:

  • Operating system
  • Programming language
  • Artificial intelligence

His main research concerns Decoding methods, Computer graphics, Flag, Multiplexing and Computer hardware. Tomoyuki Okada works mostly in the field of Decoding methods, limiting it down to concerns involving Audio signal and, occasionally, Speech coding. Tomoyuki Okada merges Computer graphics with Timeline in his study.

Multiplexing and Graphics are frequently intertwined in his study. His work deals with themes such as Transfer, State, Active state and Interactive displays, which intersect with Graphics. His Computer hardware research focuses on subjects like Encoding, which are linked to Computer vision.

Best Publications

  • Method and an apparatus for reproducing bitstream having non-sequential system clock data seamlessly therebetween

    Yoshiichiro Kashiwagi;Takumi Hasebe;Kazuhiro Tsuga;Kazuhiko Nakamura

  • Optical disc, recording apparatus, and computer-readable recording medium

    Shinichi Saeki;Kaoru Murase;Tomoyuki Okada;Kazuhiro Tsuga

  • Reproduction device, optical disc, recording medium, program, and reproduction method

    Wataru Ikeda;Hiroshi Hamasaka;Kazuhiko Nakamura;Tomoyuki Okada

  • Information recording medium, apparatus and method for recording or reproducing data thereof

    Tomoyuki Okada;Kaoru Murase;Kazuhiro Tsuga

  • A METHOD AND AN APPARATUS FOR SYSTEM ENCODING OF BITSTREAMS TO CONNECT SEAMLESSLY THEREOF

    Tomoyuki Okada;Yoshihiro Mori;Kazuhiro Tsuga;Hiroshi Hamasaka

  • Picture coding apparatus and picture decoding apparatus

    Tadamasa Toma;Tomoyuki Okada;Sam Liu;Philip M. Walker

  • Video data editing apparatus

    Tomoyuki Okada;Kazuhiro Tsuga;Hiroshi Hamasaka

  • Playback apparatus, program, and playback method

    Wataru Ikeda;Tomoyuki Okada;Yasushi Uesaka

  • Video reproduction apparatus for digital video content, video reproduction method

    Kazuhiko Okada Tomoyuki Ikeda

  • Recording medium, reproduction device, recording method, program, and reproduction method

    Hiroshi Yahata;Joseph Mccrossan;Tomoyuki Okada;Wataru Ikeda

  • Optical disc, video data editing apparatus, computer-readable recording medium storing an editing program, reproduction apparatus for the optical disc, and computer-readable recording medium storing an reproduction program

    Tomoyuki Okada;Hiroshi Hamasaka;Kazuhiro Tsuga;Shinichi Saeki

  • High-resolution optical disk for recording stereoscopic video, optical disk reproducing device and optical disk recording device

    Mitsuaki Oshima;Yoshilichiro Kashiwagi;Takumi Hasebe;Kazuhiro Tsuga

  • Optical disc, recording device and reproducing device

    Kaoru Murase;Tomoyuki Okada;Kazuhiro Tsuga;Noriko Sugimoto

  • Recording medium, reproduction device, program, reproduction method, and recording method

    Tomoyuki Okada;Masayuki Kozuka;Kazuhiko Nakamura;Yasushi Uesaka

  • Reproduction device, program, and reproduction method

    Wataru Ikeda;Tomoyuki Okada

  • Optical disc recording apparatus, computer-readable recording medium recording a file management program, and optical disc

    Tokuo Nakatani;Yoshiho Gotoh;Yasushi Tamakoshi;Hiroshi Kato

  • Moving picture generation apparatus, coding apparatus, decoding apparatus and multiplexing apparatus

    Toma Tadamasa;Kadano Shinya;Okada Tomoyuki;Yahata Hiroshi

  • OPTICAL DISC, OPTICAL DISC RECORDING METHOD AND APPARATUS, AND OPTICAL DISC PRODUCING METHOD AND APPARATUS

    Okada Tomoyuki;Murase Kaoru;Tsuga Kazuhiro

  • Stream generation apparatus, stream generation method, stream reproduction device, method and system, stream recording method

    Toma Tadamasa;Okada Tomoyuki;Yahata Hiroshi;Kadono Shinya

  • Optical disc, a recorder, a player, a recording method, and a reproducing method that are all used for the optical disc

    Shin Asada;Kazuhiro Tsuga;Kaoru Murase;Tomoyuki Okada

Frequent Co-Authors

Masayuki Kozuka
Masayuki Kozuka Panasonic (Japan)
Yoshihisa Fukushima
Yoshihisa Fukushima Panasonic (Japan)
Mitsuaki Oshima
Mitsuaki Oshima Panasonic (Japan)
Motoji Ohmori
Motoji Ohmori Panasonic (Japan)

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Best Scientists Citing Tomoyuki Okada