UHD Terminology Analysis Suggestions IEC TC 100 CHINA

UHD Terminology Analysis & Suggestions IEC TC 100 CHINA NC

Background • Purpose : -. to analysis the necessity of the “UHD Terminology” project • References : -. IEC 60050：International Electro-technical Vocabulary -. IEC TC 110 OLED -1 -2 FDIS : Terminology and letter symbols -. IEC 61747 -1 -2： Generic-Terminology and Letter symbols （Need to be checked）

Terminology Analysis & Suggestions Terms TC 100 UHD Terminology (Working-draft) Process time that television (monitor) pixel Response from dark to light, time express as “rise time” and “fall time” IEC 60050 431 -02 -12：the time from a sudden change of a control quantity until the corresponding change of an output quantity has reached a specified fraction of its final value TC 110 OLED-1 -2 FDIS Comments the main contents are similar : generic term "turn-on time" is the for "turn-on same meaning with time"and "turn "rise time", and "turn -off time" is the -off time" same meaning with "fall time"

Terminology Analysis & Suggestions Terms TC 100 UHD Terminology (Working-draft) IEC 60050 TC 110 OLED-1 -2 FDIS Comments 521 -05 -22：time interval between the instants at which the magnitude of the pulse at the output terminals reaches time interval at specified lower and upper which limits respectively when the luminance semiconductor device is being changes from Time interval in the main contents switched from its non 10% to 90% which luminance are similar : conducting to its conducting after swithching Rise time changes from 10 % the key is state organic light to 90 % after "luminance changes 531 -44 -14：the time required emitting diode switching on from 10% to 90%" for the photoelectric current to display driving rise from a stated low voltage from percentage to a stated higher OFF state to percentage of the maximum ON state. value when a steady state of radiation is instantaneously applied

Terminology Analysis & Suggestions Terms Fall time TC 100 UHD Terminology (Working-draft) IEC 60050 TC 110 OLED-1 -2 FDIS 521 -05 -24：time interval between the instants at which the magnitude of the pulse at the output terminals reaches time interval specified upper and lower between the limits respectively when a sintants at semiconductor device is being Time interval in which the which luminance switched from its conducting luminance is change from 90 % to its non-conducting state 90% and 10% to 10 % after 531 -44 -15：the time required of between the switching off for the photoelectric current to luminance of fall from a stated high the ON and percentage to a stated lower OFF states. percentage of the maximum value when a steady state of radiation is instantaneously removed Comments the main contents are similar : the key is "luminance changes from 90% to 10%"

Terminology Analysis & Suggestions Terms TC 100 UHD Terminology (Working-draft) Residual image Phenomenon that still picture keep on screen with no input after inputting a still signal for long time IEC 60050 TC 110 OLED-1 -2 FDIS Comments general term that refers to a the main contents burned-in are similar : image or a "still picture" is the permanent same meaning with image caused "permanent by long time picture" static operation.

Terminology Analysis & Suggestions Terms TC 100 UHD Terminology (Working-draft) Ratio of RGB triangle gamut area or all colours polygon gamut Colour area and the gamut area spectral colour gamut as defined in CIE 1976 (u’, v’) space IEC 60050 TC 110 OLED-1 -2 FDIS Comments range of colors the main contents that can be are similar : reproduced by "range of colors" is an organic light the same meaning emitting diode with "Ratio of RGB display panel. triangle gamut"

Terminology Analysis & Suggestions Conclusion: -. We found some terms in IEC TC 100 UHD Terminology already has definition in other IEC standards, So lack of necessity of establishing this standard at this stage.