JP2016126868A - 輝度制御装置及び輝度制御方法 - Google Patents
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- H—ELECTRICITY
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
- G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
- H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/16—Controlling the light source by timing means
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
【解決手段】CPU21が、基準デューティ比Dn+1から基準デューティ比Dnを減じた値を補間分割数Ndで除して補間変化幅Dn’を算出し、補間期間ΔTが経過する毎に基準デューティ比に補間変化幅Dn’を積算していくことにより、LED4の輝度の変化幅を小さくして利用者に違和感を与えにくくするとともに、記憶する情報量を抑制することができる。
【選択図】図4
Description
3 LEDドライバ(制御手段)
4 LED(発光部材)
21 CPU(算出手段、積算手段)
22 ROM(デューティ比記憶手段、分割数記憶手段)
Claims (5)
- 発光部材を駆動するパルス電流又はパルス電圧のデューティ比を、輝度遷移期間を等分割した複数の単位期間のそれぞれで変化させることで該発光部材の輝度を制御する輝度制御装置であって、
前記複数の単位期間のそれぞれにおける基準デューティ比を記憶するデューティ比記憶手段と、
補間分割数を記憶する分割数記憶手段と、
前記複数の単位期間のうち一の単位期間における前記基準デューティ比をその次の単位期間における前記基準デューティ比から減じた値を前記補間分割数で除して当該一の単位期間における補間変化幅を算出する算出手段と、
前記複数の単位期間のそれぞれにおいて、前記単位期間を前記補間分割数でさらに等分割した補間期間が経過する毎に当該単位期間の前記基準デューティ比に前記補間変化幅を積算していく積算手段と、
前記積算手段によって求めたデューティ比で前記発光部材を発光させる制御手段と、を備えることを特徴とする輝度制御装置。 - 前記複数の単位期間のそれぞれにおける前記基準デューティ比が、段階的に増加又は減少していくように設定されていることを特徴とする請求項1に記載の輝度制御装置。
- 前記複数の単位期間のうち一の単位期間における前記基準デューティ比とその次の単位期間における前記基準デューティ比との差分が、当該一の単位期間の前記基準デューティ比が小さいほど小さくなるように設定されていることを特徴とする請求項2に記載の輝度制御装置。
- 前記発光部材が、互いに異なる発光色を有する複数の発光素子を備え、
前記デューティ比記憶手段が、前記発光色毎に前記基準デューティ比を記憶し、
前記算出手段が、前記発光色毎に前記補間変化幅を算出し、
前記積算手段が、前記発光色毎に前記基準デューティ比に前記補間変化幅を積算し、
前記制御手段が、前記積算手段によって求めた前記発光色毎のデューティ比で前記発光素子を発光させることを特徴とする請求項1〜3のいずれか1項に記載の輝度制御装置。 - 発光部材を駆動するパルス電流又はパルス電圧のデューティ比を、輝度遷移期間を等分割した複数の単位期間のそれぞれで変化させることで該発光部材の輝度を制御する輝度制御方法であって、
前記複数の単位期間のそれぞれにおける基準デューティ比と、補間分割数と、を記憶し、
前記複数の単位期間のうち一の単位期間における基準デューティ比をその次の単位期間における基準デューティ比から減じた値を前記補間分割数で除して当該一の単位期間における補間変化幅を算出し、
前記複数の単位期間のそれぞれにおいて、前記単位期間を前記補間分割数でさらに分割した補間期間が経過する毎に当該単位期間の前記基準デューティ比に前記補間変化幅を積算していくとともに、このデューティ比で前記発光部材を発光させることを特徴とする輝度制御方法。
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JP2014265408A JP6234362B2 (ja) | 2014-12-26 | 2014-12-26 | 輝度制御装置及び輝度制御方法 |
DE112015005809.5T DE112015005809B4 (de) | 2014-12-26 | 2015-12-01 | Luminanzsteuervorrichtung und Luminanzsteuerverfahren |
PCT/JP2015/083760 WO2016104071A1 (ja) | 2014-12-26 | 2015-12-01 | 輝度制御装置及び輝度制御方法 |
CN201580064895.8A CN107006102B (zh) | 2014-12-26 | 2015-12-01 | 亮度控制装置和亮度控制方法 |
US15/529,278 US9907141B2 (en) | 2014-12-26 | 2015-12-01 | Luminance control apparatus and luminance control method |
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US (1) | US9907141B2 (ja) |
JP (1) | JP6234362B2 (ja) |
CN (1) | CN107006102B (ja) |
DE (1) | DE112015005809B4 (ja) |
WO (1) | WO2016104071A1 (ja) |
Cited By (5)
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JP2017138475A (ja) * | 2016-02-03 | 2017-08-10 | リンナイ株式会社 | Led表示装置 |
WO2018100822A1 (ja) * | 2016-11-30 | 2018-06-07 | ミネベアミツミ株式会社 | 光源駆動装置 |
DE102018213316A1 (de) | 2017-08-10 | 2019-02-14 | Yazaki Corporation | Beleuchtungsvorrichtung |
EP4156861A1 (en) | 2021-09-22 | 2023-03-29 | Yazaki Corporation | Illumination control device and illumination system |
EP4156863A1 (en) | 2021-09-22 | 2023-03-29 | Yazaki Corporation | Illumination control device and illumination system |
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DE112019001298T5 (de) * | 2018-03-13 | 2020-12-10 | Nippon Seiki Co., Ltd. | Anzeigevorrichtung |
KR20220100759A (ko) * | 2021-01-08 | 2022-07-18 | 삼성디스플레이 주식회사 | 복수의 표시 패널들을 가지는 타일드 표시 장치 |
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- 2015-12-01 DE DE112015005809.5T patent/DE112015005809B4/de active Active
- 2015-12-01 CN CN201580064895.8A patent/CN107006102B/zh active Active
- 2015-12-01 WO PCT/JP2015/083760 patent/WO2016104071A1/ja active Application Filing
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JP2017138475A (ja) * | 2016-02-03 | 2017-08-10 | リンナイ株式会社 | Led表示装置 |
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US10264658B2 (en) | 2017-08-10 | 2019-04-16 | Yazaki Corporation | Lighting device |
DE102018213316B4 (de) | 2017-08-10 | 2022-07-28 | Yazaki Corporation | Beleuchtungsvorrichtung |
EP4156861A1 (en) | 2021-09-22 | 2023-03-29 | Yazaki Corporation | Illumination control device and illumination system |
EP4156863A1 (en) | 2021-09-22 | 2023-03-29 | Yazaki Corporation | Illumination control device and illumination system |
US11877364B2 (en) | 2021-09-22 | 2024-01-16 | Yazaki Corporation | Illumination control device and illumination system |
US11903108B2 (en) | 2021-09-22 | 2024-02-13 | Yazaki Corporation | Illumination control device and illumination system |
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JP6234362B2 (ja) | 2017-11-22 |
DE112015005809B4 (de) | 2018-05-30 |
CN107006102A (zh) | 2017-08-01 |
US20170290127A1 (en) | 2017-10-05 |
DE112015005809T5 (de) | 2017-10-05 |
CN107006102B (zh) | 2019-04-26 |
WO2016104071A1 (ja) | 2016-06-30 |
US9907141B2 (en) | 2018-02-27 |
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