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Telexistence (2nd Edition)



World Scientific, Singapore



Telexistence (2nd Edition)

 Author  Sasumu Tachi

Year of Publication











Krishna B. Misra



Review Complete

The book comprises 9 chapters, preceded by a page about the author and the Preface.


Chapter 1

Virtual Reality and Telexistence

14 Pages


Chapter 2

Generations and Design Philosophies of Robots

17 Pages


Chapter 3


21 Pages


Chapter 4

Fundamental Technologies for Telexistence

59 Pages


Chapter 5

Retroreflective Projection Technology (RPT)

12 Pages


Chapter 6

Mutual Telexistence Using RPT

34 Pages


Chapter 7

Telexistence Communication Using TWISTER: Telexistence Wide-angle Immersive STEReoscope

46 Pages

Chapter 8

Haptic VR and Haptic Telexistence

27 Pages


Chapter 9

Future Perspective

13 Pages


Appendix A : Figures in Colour

15 Pages



09 Pages



09 Pages



This interesting concept is creating a far-reaching influence on the emerging technologies of 21st Century and was conceptualized and first presented in 1980 by Dr. Sumusu Tachi, Professor Emeritus of The University of Tokyo, Japan. He patented the idea in 1981 and published a book in Japanese in 1982. Telexistence is a concept which refers to a technology that enables a person having a real-time sensation of being at a place 9789814618069-teleexistenceother than where he or she actually exists, and is able to interact with the remote environment, which may be real, virtual, or a combination of both. The present book is the second edition written by the inventor of the idea himself, and is an updated version of the first edition he published in 2009. The book explains how telexistence can be realized, and projects its future advancements and applications. It also may refer to an advanced type of tele-operating system that enables an operator to control and perform remote tasks dexterously with the feeling of existing in a surrogate robot working in a remote environment. Telexistence in the real remote environment through a virtual environment is also possible. In fact telexistence may help relieve human beings from the restrictions of their cognitive limitations and physical constraints and make them omnipresent and all pervasive.

The term virtual reality came into existence around 1989. Virtual reality (VR) in essence is a technology which invokes a sensation of being present in a realistic virtual environment other than the actual environment. There are immense opportunities for applications of VR. The fields in which virtual reality can be of great use are pediatrics, rehabilitation, physical therapy, occupational therapy and physical medicine. In adult rehabilitation, virtual reality applications can help upper and lower limb motor rehabilitation for individuals recovering from stroke or spinal cord injury. The usage of VR can allow professionals to conduct training in a virtual environment where they can improve upon their skills without the consequence of failing the operation. VR also plays an important role in combat training for the military. VR is also used in flight simulation for the Air Force. Telexistence can be split under two categories, viz., “transmitted reality” where the environment is real and exists at a remote place and is connected to a user/operator via a robot. The other category is called, “synthesized reality”, where the telexistence is in virtual world which does not exist but is created by a computer.

Looking to the scope of telexistence for humans, and the possibilities of telexistence provides, this reviewer feels that this book must be read by all future engineers, technologists and scientists in order to get inspired by what future holds in store for improving the quality of life of humans on this planet. It is a very interesting subject to explore.


This review has been published in Vol. 11, No. 5,  September 2015 issue of the IJPE


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