JP6244537B2 - LED display and cooking device provided with this LED display - Google Patents
LED display and cooking device provided with this LED display Download PDFInfo
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- JP6244537B2 JP6244537B2 JP2012221974A JP2012221974A JP6244537B2 JP 6244537 B2 JP6244537 B2 JP 6244537B2 JP 2012221974 A JP2012221974 A JP 2012221974A JP 2012221974 A JP2012221974 A JP 2012221974A JP 6244537 B2 JP6244537 B2 JP 6244537B2
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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
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
- G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
- G09G3/14—Semiconductor devices, e.g. diodes
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
- G09G3/2025—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having all the same time duration
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/06—Passive matrix structure, i.e. with direct application of both column and row voltages to the light emitting or modulating elements, other than LCD or OLED
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0686—Adjustment of display parameters with two or more screen areas displaying information with different brightness or colours
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Description
本発明は、マイクロコンピュータを用いたＬＥＤ表示器とそれを搭載した加熱調理器に関するものである。 The present invention relates to an LED display using a microcomputer and a cooking device equipped with the LED display.
電子レンジで使用されるＬＥＤ表示器の１つとして、１つのＬＥＤ素子の光が周囲に漏れないように遮光ケースに格納して、表示したいピクト、文字などの形に光が遮断されないようにし、ＬＥＤ素子がＯＮしたときに、そのピクト等が光っていることを認識できる構成となっているものがある。また、その制御方法としては、ＬＥＤ素子をマトリクス状に配列して、マトリクスの縦列は常時時分割でドライブし、マトリクスの横列はその配列状態に応じて設けられたスイッチとしてのトランジスタ素子を適宜オン・オフすることにより、前記のＬＥＤ素子を選択的に点灯するいわゆるダイナミック駆動方式が知られている。 One LED indicator for use in a microwave oven, and stored in the shading case so that light does not leak around one LE D element, so pictogram to be displayed, the light in the form of characters not interrupted to, when the LE D element is turned oN, there is one and has a configuration that can be recognized that the pictogram or the like glowing. As the control method thereof, by arranging LE D element in a matrix, the columns of the matrix should be driven with constant time division, matrix rows is the transistor element as switch provided in accordance with the arrangement state by appropriately turning on and off, so-called dynamic drive system is known which selectively turns on the said LE D element.
一方、ＬＥＤ表示器の輝度調節として、例えば、特許文献１や特許文献２に示されているように、マトリクスの縦列に接続しているＯＮしたいＬＥＤ素子がドライブされているときに、マトリクスの横列の制御パルスのデューティを設定することにより、所望のＬＥＤ素子のＯＮする長さを制御できるので、輝度調整を行える。 On the other hand, as the brightness adjustment of the LED display, for example, as shown in Patent Documents 1 and 2, when the LE D element to be ON are connected in cascade of the matrix are driven, a matrix by setting the duty of the control pulse row, it is possible to control the length of ON desired LE D element, perform the brightness adjustment.
また、例えば、特許文献３に示されているように、パソコン等の１フレームの画面を複数回表示させるＮ倍速（Ｎ＝２、３、…の自然数）表示を行うことにより、ＬＥＤ素子の消灯している間隔が短くなり、人間の目はＬＥＤの消灯を感知しなくなる。これにより、フリッカーが解消される。 Further, for example, as shown in Patent Document 3, the LED element is turned off by performing N-times speed display (N = 2, 3,..., Natural number) display in which a frame of a personal computer or the like is displayed a plurality of times. The interval between the two is shortened, and the human eye does not sense the turning off of the LED. Thereby, flicker is eliminated.
しかしながら、電子レンジで使用されるＬＥＤ素子の発光色の違いやＬＥＤ表示器のピクトやｋｇ，ｈ，ｍｉｎといった各表示部は表示面積が違うので各ＬＥＤ素子の輝度が同じ場合、その表示部の輝度が違ってしまい、さらにそれによりフリッカー現象が起きやすいという課題を有していた。つまり同一の輝度でのＬＥＤ素子でも発光色が違うと、人間の目はＬＥＤ素子の消灯を感知する感覚が変化し、フリッカー現象を感じやすくなる場合がある。例えば緑色のＬＥＤ素子と白色のＬＥＤ素子とでは白色のＬＥＤ素子の方が明るい色であるので、消灯したときに相対的な感覚によりフリッカーを感知しやすくなる。また輝度が高くなればなるほど、消灯したときとの相対的な感覚によりフリッカーを感知しやすくなる。 However, if the pictogram or kg of emission color differences and LED indicator LED elements used in the microwave oven, h, since each display unit such min is the display area different brightness of each LE D element is the same, the display Therefore, there is a problem that the flicker phenomenon easily occurs. That is, when the emission color is different in LE D element of the same luminance, the human eye senses is changed to sense a turn off of the LED elements, may be likely feel the flicker phenomenon. For example, a green LED element and a white LED element have a brighter white LED element , so that flicker can be easily detected by a relative sense when the LED is turned off. In addition, the higher the brightness, the easier it is to detect flicker by the relative sensation of when the light is extinguished.
本発明は、前記従来の課題を解決するもので、ＬＥＤ素子の１回にＯＮする時間を制限するとともに、ｎ回周期（ｎ＝１、２、３、…の自然数）の時間内にＯＮしたいＬＥＤ素子を最大ｎ回ＯＮし、かつＬＥＤ素子毎にｎの数値を変更することにより、輝度調整を行える構成としたＬＥＤ表示器を提供することを目的とする。 The present invention is the one that solves the conventional problem, as well as limiting the time of ON for one LE D element, n times the period (n = 1, 2, 3, ... natural number) in the time maximum n times oN the LE D element to be oN, and by changing the value of n for each LE D containing child, and to provide a LED display which is configured to perform a brightness adjustment.
前記従来の課題を解決するために、本発明のＬＥＤ表示器は、複数の表示部と、前記複数の表示部にそれぞれ設けられたＬＥＤ素子と、前記ＬＥＤ素子の点灯周期を制御するマイクロコンピュータと、を備え、前記複数の表示部は、第１の表示部および第１の表示部よりも表示面積の大きい第２の表示部を有し、前記マイクロコンピュータは、前記第１の表示部に設けられた前記ＬＥＤ素子の点灯周期を、前記第２の表示部に設けられた前記ＬＥＤ素子の点灯周期よりも長くするとともに、輝度が高い前記表示部のＬＥＤ素子は、輝度が低い前記表示部のＬＥＤ素子より、点灯周期を短くすることを特徴としたものである。
In order to solve the conventional problems, an LED display according to the present invention includes a plurality of display units, LED elements respectively provided in the plurality of display units, and a microcomputer that controls a lighting cycle of the LED elements. The plurality of display units include a first display unit and a second display unit having a display area larger than that of the first display unit, and the microcomputer is provided in the first display unit. The lighting period of the LED element is longer than the lighting period of the LED element provided in the second display unit, and the LED element of the display unit having a high luminance has a low luminance. The lighting cycle is shorter than that of the LED element .
これによって、各表示部のＬＥＤ素子のＯＦＦ期間の間隔を調整でき、フリッカーを解消できる。 This allows adjusting the distance O FF period of the LED elements of each table radical 113, you can eliminate the flicker.
また、本発明の加熱調理器は、被加熱物を収容する加熱室と、前記加熱室に設けられた開閉ドアと、前記加熱室内の被加熱物を加熱する加熱手段と、前記加熱手段を制御する主制御回路と、ユーザが調理設定等を行うための入力手段と、上記ＬＥＤ表示器と、を備えたものである。 The heating cooker of the present invention controls a heating chamber for storing a heated object, an opening / closing door provided in the heating chamber, a heating means for heating the heated object in the heating chamber, and the heating means. A main control circuit, an input means for the user to make cooking settings, and the LED display .
これによって、加熱調理器に搭載するＬＥＤ表示器の各表示部のＬＥＤ素子のＯＦＦ期間の間隔を調整でき、フリッカーを解消できる。 Thus, interval O FF period of the LED elements of each table radical 113 of the LED indicator mounted on the cooker can be adjusted, it can be eliminated flicker.
本発明のＬＥＤ表示器は、ＬＥＤ素子が１回にＯＮする幅を制限し、ｎ回周期に１回〜ｎ回ＬＥＤ素子をＯＮすることにより、ＬＥＤ表示器のフリッカーの解消ができる。また各表示部の輝度調整を行えるので、例えば、ｍｉｎと０との表示のように、表示面積の違いにより表示部の明るさが違ってしまう場合にでも、明るさを同等に調整できる。 LED display of the present invention limits the width LED element is turned ON at a time, by turning ON once ~n once LE D element to n times the period, it is eliminated flicker the LED indicator. Since it performs the luminance adjustment of the tables radical 113, for example, as in the display of min and 0, even when the would differ in brightness due Ri Table radical 113 to the difference of the display area, equivalent brightness Can be adjusted.
また、本発明の加熱調理器は、ＬＥＤ表示器を搭載することにより、ＬＣＤ表示器に比べ長寿命となり、交換することが非常に手間となる、ビルトインレンジのタイプや天井から吊るして使用するレンジのタイプに搭載した場合に、寿命が長い分交換する機会が減るという効果がある。 In addition, the cooking device of the present invention has a built-in range type or a range that is hung from the ceiling, which has a longer life than an LCD display and is very troublesome to replace by installing an LED display. when mounted on the type, there is an effect that reduces the chance that life is a long minute exchange.
第１の発明のＬＥＤ表示器は、複数の表示部と、前記複数の表示部にそれぞれ設けられたＬＥＤ素子と、前記ＬＥＤ素子の点灯周期を制御するマイクロコンピュータと、を備え、前記複数の表示部は、第１の表示部および第１の表示部よりも表示面積の大きい第２の表示部を有し、前記マイクロコンピュータは、前記第１の表示部に設けられた前記ＬＥＤ素子の点灯周期を、前記第２の表示部に設けられた前記ＬＥＤ素子の点灯周期よりも長くするとともに、輝度が高い前記表示部のＬＥＤ素子は、輝度が低い前記表示部のＬＥＤ素子より、点灯周期を短くすることを特徴としたものである。
これによって、加熱調理器に搭載するＬＥＤ表示器の各表示部のＬＥＤ素子のＯＦＦ期間の間隔を調整でき、フリッカーを解消できる。
According to a first aspect of the present invention, there is provided an LED display comprising: a plurality of display units; LED elements respectively provided in the plurality of display units; and a microcomputer that controls a lighting cycle of the LED elements. The unit has a first display unit and a second display unit having a display area larger than that of the first display unit, and the microcomputer is a lighting cycle of the LED element provided in the first display unit. Is longer than the lighting cycle of the LED element provided in the second display unit, and the LED element of the display unit having a high luminance has a shorter lighting cycle than the LED element of the display unit having a low luminance. It is characterized by doing.
Thereby, the interval of the OFF period of the LED element of each display part of the LED display mounted on the heating cooker can be adjusted, and flicker can be eliminated.
第２の発明は、輝度が高い前記表示部のＬＥＤ素子は、輝度が低い前記表示部のＬＥＤ素子より、点灯周期を短くするものである。
これによって、各ＬＥＤ表示部の輝度に応じてＬＥＤ素子のＯＦＦ期間の間隔を調整でき、フリッカーを解消できる。
According to a second aspect of the present invention, the LED element of the display unit having a high luminance has a shorter lighting cycle than the LED element of the display unit having a low luminance.
Thereby, the interval of the OFF period of the LED elements can be adjusted according to the luminance of each LED display unit, and flicker can be eliminated.
第３の発明の加熱調理器は、被加熱物を収容する加熱室と、前記加熱室に設けられた開閉ドアと、前記加熱室内の被加熱物を加熱する加熱手段と、前記加熱手段を制御する主制御回路と、ユーザが調理設定等を行うための入力手段と、第１または第２の発明のＬＥＤ表示器と、を備えるものである。 A heating cooker according to a third aspect of the present invention controls a heating chamber for storing an object to be heated, an opening / closing door provided in the heating chamber, a heating means for heating the object to be heated in the heating chamber, and the heating means. A main control circuit, an input means for the user to make cooking settings , and the LED display of the first or second invention .
これによって、加熱調理器に搭載するＬＥＤ表示器の各表示部の輝度とＬＥＤ素子のＯＦＦ期間の間隔を調整でき、フリッカーを解消できる。 Thus, the interval of the OFF period of the brightness and the LED elements of each table radical 113 of the LED indicator mounted on the cooker can be adjusted, it can be eliminated flicker.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図１は、本発明の第１の実施の形態におけるＬＥＤ表示器１のブロック図を示すものである。
(Embodiment 1)
FIG. 1 is a block diagram of an LED display 1 according to the first embodiment of the present invention.
図１において、マイクロコンピュータ２（以下、マイコン２と称す）とＬＥＤ表示器１との接続は、マイコンの６本のピンからトランジスタで構成された走査ライン出力回路部３を通じてＬＥＤ表示器１のＣＯＭ側（マトリクスの縦列）に接続されている。また、マイコン２の７本のピンからトランジスタで構成された表示データ出力回路部４を通じてＬＥＤ表示器１のＳＥＧ側（マトリクスの横列）に接続されている。 In FIG. 1, the microcomputer 2 (hereinafter referred to as the microcomputer 2 ) and the LED display 1 are connected to the LED display 1 through the scanning line output circuit 3 composed of transistors from the six pins of the microcomputer. Connected to the side (column of matrix). Further, the seven pins of the microcomputer 2 are connected to the SEG side (the matrix row) of the LED display 1 through the display data output circuit unit 4 constituted by transistors.
図２は、図１のＬＥＤ表示器１の詳細例を示す図、図３は、本発明の第１の実施の形態における図１のＬＥＤ表示器を搭載した加熱調理器の接続図を示すものである。 FIG. 2 is a diagram showing a detailed example of the LED display 1 of FIG. 1, and FIG. 3 is a connection diagram of a heating cooker equipped with the LED display of FIG. 1 in the first embodiment of the present invention. It is.
図３において、マイコン２は主制御回路１２を用いて加熱手段１１を制御し、入力手段１３よりインプットされた情報を元に、マイコン２で管理している状態（ＯＦＦ、調理中、設定中など）が変化し、その状態に応じてＬＥＤ表示器に表示する構成になっている。 In FIG. 3, the microcomputer 2 controls the heating means 11 using the main control circuit 12 and is managed by the microcomputer 2 based on the information input from the input means 13 (OFF, cooking, setting, etc.) ) Changes and is configured to display on the LED display according to the state.
以上のように構成された加熱調理器について、以下にその動作、作用を説明する。 About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
まず、入力手段１３よりメニューを選択し、時間設定が行われる場合、ＬＥＤ表示器１には、０表示とｍｉｎ表示の表示が行われる。０表示を表示するための７セグメントの表示部上５、表示部右上６、表示部右下７、表示部下８、表示部左下９、及び表示部左上１０は、ＣＯＭ４の各ＳＥＧ１〜ＳＥＧ６に対応されている。例えば、７セグメントで「表示部上５」の部分を光らせるためには、ＣＯＭ４のスキャン中にＳＥＧ１をＯＮすればよい。同様に「表示部右上６」の部分はＣＯＭ４のスキャン中にＳＥＧ２をＯＮする、といった具合である。 First, when the menu is selected from the input means 13 and time setting is performed, the LED display 1 displays 0 display and min display . 0 display on 5 of 7 segments for displaying the display, the display unit upper right 6, the display unit lower right 7, display subordinates 8, the display unit lower left 9 and the display unit upper left 10, the corresponding to each of COM4 SEG1～SEG6 Has been. For example, in order to illuminate the “ upper display portion 5” portion with seven segments, SEG1 may be turned on during the COM4 scan. Similarly, the portion “ upper right 6 of the display unit ” is such that SEG2 is turned ON during the COM4 scan.
また、ＣＯＭ５のスキャン中にＳＥＧ６をＯＮすれば、ｍｉｎ表示の表示が行われる。 If SEG6 is turned on during the COM5 scan, a min display is displayed.
ところで、図４に示すように、ＣＯＭのスキャンは５００μｓｅｃ毎に切換が行われ、最初にＣＯＭ１に接続されているマイコン２のピンからＨｉ信号を出力すると、走査ライン出力回路部３のトランジスタがＯＮするため、ＣＯＭ１のラインがＨｉ状態になる。これを５００μｓｅｃ間保持し、次の５００μｓｅｃで、ＣＯＭ１に接続されているマイコン２のピンからＬｏｗ信号を出力すると、走査ライン出力回路部３のトランジスタがＯＦＦするため、ＣＯＭ１のラインがＬｏｗ状態になり、続いてＣＯＭ２のラインをＨｉ状態にする。次の５００μｓｅｃ後には、ＣＯＭ２のラインをＬｏｗ状態にし、ＣＯＭ３のラインをＨｉ状態にする。同様に、５００μｓｅｃ毎にＣＯＭ４、ＣＯＭ５、ＣＯＭ６とＨｉ状態にしていき、ＣＯＭ６がＨｉ状態のとき、５００μｓｅｃ間保持後にＣＯＭ６がＬｏｗ状態になった後、ＣＯＭ１へ戻りそれを繰り返す。 By the way, as shown in FIG. 4, the COM scan is switched every 500 μsec. When a Hi signal is first output from the pin of the microcomputer 2 connected to the COM 1, the transistor of the scan line output circuit unit 3 is turned on. Therefore, the COM1 line is in the Hi state. When this signal is held for 500 μsec and the Low signal is output from the pin of the microcomputer 2 connected to COM1 in the next 500 μsec, the transistor of the scanning line output circuit unit 3 is turned OFF, so the COM1 line is in the Low state. Subsequently, the COM2 line is set to the Hi state. After the next 500 μsec, the COM2 line is set to the Low state and the COM3 line is set to the Hi state. Similarly, every 500 .mu.sec COM4, COM5, continue to COM6 and Hi state, when COM6 is Hi state, after the C OM6 after holding between 500 .mu.sec becomes a Low state, the return repeat it to COM1.
このとき、図２のＬＥＤ表示器１のｍｉｎ表示の輝度をレベル５（一番高い）、７セグメントの表示部５〜１０の輝度を全てレベル３に設定したい場合、ＣＯＭのスキャンを５周期分行うことで１つの表示処理を行うという構成をとる。そして、図４に示すように、
ＣＯＭのスキャンの５周期のうち、１周期目、３周期目、５周期目のＣＯＭ４がＨｉ状態のときに、ＳＥＧ１〜ＳＥＧ５をＯＮさせる。すると０表示が光って表示される。また、ＣＯＭのスキャンの１周期〜５周期目でＣＯＭ５がＨｉ状態のときに、ＳＥＧ６をＯＮさせる。するとｍｉｎ表示が光って表示される。このときｍｉｎ表示は、図２に示される７セグメントの一部である「表示部上５」等よりも面積が広いので、輝度をレベル５にする必要があり、７セグメントは、レベル３にすると、７セグメントとｍｉｎ表示とが同じくらいの明るさに見えるようになる。さらに、７セグメントとｍｉｎ表示が消灯している時間は５．５ｍｓｅｃと２．５ｍｓｅｃであるので、人間の目には感知できず、フリッカー現象は起こらない。
In this case, LED indicator 1 min display level luminance 5 (highest) in FIG. 2, 7 if you want to set the Brightness of the display unit 5 to 10 of the segment to all level 3, 5 cycles scans COM the configuration of performing one of a display process by performing preparative Ru. Then, as shown in FIG. 4,
SEG1 to SEG5 are turned ON when COM4 in the first period, the third period, and the fifth period among the five periods of the COM scan is in the Hi state. Then, the 0 display is lit and displayed. Further, when COM5 is in the Hi state in the first to fifth periods of the COM scan , SEG6 is turned on. Then, the min display is lit and displayed. At this time, the min display has a larger area than “upper display 5” which is a part of 7 segments shown in FIG. , 7 segments and the min display will appear as bright. Further, 7 segments and min display is off time because at 5.5 ms ec and 2.5 ms ec, can not be perceived by the human eye, the flicker phenomenon does not occur.
次に、輝度レベル１（一番低い）を設定する場合を考えてみる。レベル１の場合は、ＬＥＤ素子を消灯する時間が１５ｍｓｅｃと長くなりフリッカーを感知しやすい条件となるが、輝度が低いのでＯＦＦしたときとの相対的な感覚により、人間の目は感知できずフリッカー現象は起こらない。もし消灯する時間が同じ１５ｍｓｅｃであり、ＣＯＭのＯＮする時間が５００μｓｅｃではなく、２．５ｍｓｅｃであったなら人間の目で感知できてしまい、フリッカー現象は起きてしまう。 Next, consider a case where the luminance level 1 (the lowest) is set. In the case of level 1, the time for turning off the LED element is as long as 15 ms ec and it is easy to detect flicker. However, since the brightness is low, the human eyes cannot be detected due to the relative feeling when turning off. Flicker phenomenon does not occur. If the same 15ms ec is time to turn off, rather than the time 500μsec to ON of COM, it will be able sensed by the human eye if there was a 2.5ms ec, flicker phenomenon would occur.
以上のように、本実施の形態において、ＬＥＤ素子が１回ＯＮする時間を５００μｓｅｃとし、ＣＯＭのスキャンを５周期分行うことで１つの表示処理という構成を取ることにより、各表示部の輝度の調整およびフリッカー現象を解消できる。 As described above, in the present embodiment, the time for which the LED element is turned on once is set to 500 μsec, and the configuration of one display process is performed by performing the COM scan for five cycles, so that the luminance of each display unit can be reduced. Adjustment and flicker phenomenon can be eliminated.
（実施の形態２）
図５は、本発明の第２の実施の形態のＬＥＤ表示器のフローチャートである。なお、実施例１と同一符号のものは同一構造を有し、説明は省略する。
(Embodiment 2)
FIG. 5 is a flowchart of the LED display according to the second embodiment of the present invention. In addition, the thing of the same code | symbol as Example 1 has the same structure, and abbreviate | omits description.
まず、マイコン２はステップＳ１にて、ＣＯＭ Ｎｏ．を１にし、周期Ｎｏ．を１に設定する。ＣＯＭ Ｎｏ．はＣＯＭ１〜ＣＯＭ６のどの状態でＨｉを出すのかを管理するカウンタである。周期Ｎｏ．は５周期分の周期の１番目〜５番目のどの状態なのかを管理するカウンタである。 First, in step S1, the microcomputer 2 receives a COM No. 1 and the cycle No. Is set to 1. COM No. Is a counter that manages in which state of COM1 to COM6 Hi is output. Period No. Is a counter that manages which state is the first to fifth states of five cycles.
次に、ステップＳ２では、マイコン２はＣＯＭ１〜ＣＯＭ６を一旦Ｌｏｗ状態にするために全てのＣＯＭにＬｏｗ信号を送信し、ステップＳ３でＣＯＭ Ｎｏ．に従ったＣＯＭにＨｉ信号を送信する。この場合ではＣＯＭ１にＨｉ信号を送信する。 Next, in step S2, the microcomputer 2 transmits a Low signal to all COMs in order to temporarily set COM1 to COM6 in a low state. A Hi signal is transmitted to the COM according to the above. In this case, a Hi signal is transmitted to COM1.
ステップＳ４ではマイコン２で管理している表示するべきデータからＣＯＭ Ｎｏ．と周期 Ｎｏ．に対応したＯＮすべきＳＥＧをステップＳ５にてＯＮさせる。例えば、０ｍｉｎ表示を表示させる場合、１周期目のＣＯＭ４のときにはＳＥＧ１〜ＳＥＧ５をＯＮさせる。１周期目のＣＯＭ５のときにはＳＥＧ６だけをＯＮさせる。 In step S4, the COM No. is determined from the data to be displayed managed by the microcomputer 2 . And cycle No. In step S5, the SEG that should be turned on corresponding to is turned on. For example, in the case of displaying 0 min display , SEG1 to SEG5 are turned ON at COM4 in the first cycle. At the time of COM5 in the first cycle, only SEG6 is turned on.
ステップＳ６では５００μｓｅｃ間何もせずに待つ。ステップＳ７ではＣＯＭ Ｎｏ．をカウントアップさせる。この場合ではＣＯＭ２にする。 In step S6, the process waits for 500 μsec without doing anything. In step S7, COM No. Count up. In this case, it is set to COM2.
ステップＳ８ではＣＯＭ７以上になったかどうか判定し、ＣＯＭ７以上でないならステップＳ２に戻る。ＣＯＭ７以上であるなら次のステップに進む。 In step S8, it is determined whether or not COM7 or higher. If not higher than COM7, the process returns to step S2. If it is COM7 or higher, proceed to the next step.
ステップＳ９ではＣＯＭ Ｎｏ．を１に戻し、ステップＳ１０で周期Ｎｏ．をカウントアップする。この場合では２周期目となる。 In step S9, COM No. Is returned to 1, and in step S10, the cycle No. Count up. In this case, it is the second period.
次に、ステップＳ１１では、周期Ｎｏ．が６以上かどうか判定し、６周期目以上でないならステップＳ２に戻る。６周期目以上なら１周期目に戻し、ステップＳ２に戻り初めか
らやり直す。
Next, in step S11, the cycle No. Is determined to be 6 or more, and if it is not 6th period or more, the process returns to step S2. If it is 6th cycle or more, it returns to the 1st cycle, returns to step S2, and starts again.
以上のように、本発明のＬＥＤ表示器は、ソフトウェアの構成の変更のみで実現可能なため、容易に加熱調理器のみならず他の電気製品への展開も図れる。 As described above, since the LED display of the present invention can be realized only by changing the configuration of software, it can be easily developed not only in a cooking device but also in other electrical products.
１ ＬＥＤ表示器
２ マイコン（マイクロコンピュータ）
３ 走査ライン出力回路部
４ 表示データ出力回路部
５ 表示部上
６ 表示部右上
７ 表示部右下
８ 表示部下
９ 表示部左下
１０ 表示部左上
１１ 加熱手段
１２ 主制御回路
１３ 入力手段
1 LED display 2 Microcomputer
DESCRIPTION OF SYMBOLS 3 Scan line output circuit part 4 Display data output circuit part 5 Upper display part 6 Upper right part of display part 7 Lower right part of display part 8 Lower display part 9 Lower left part of display part 10 Upper left part of display part 11 Heating means 12 Main control circuit 13 Input means
Claims (2)
前記複数の表示部は、第１の表示部および第１の表示部よりも表示面積の大きい第２の表示部を有し、
前記マイクロコンピュータは、前記第１の表示部に設けられた前記ＬＥＤ素子の点灯周期を、前記第２の表示部に設けられた前記ＬＥＤ素子の点灯周期よりも長くするとともに、輝度が高い前記表示部のＬＥＤ素子は、輝度が低い前記表示部のＬＥＤ素子より、点灯周期を短くするＬＥＤ表示器。 A plurality of display units, LED elements respectively provided in the plurality of display units, and a microcomputer that controls a lighting cycle of the LED elements,
The plurality of display units include a first display unit and a second display unit having a larger display area than the first display unit,
The microcomputer makes the lighting cycle of the LED element provided in the first display unit longer than the lighting cycle of the LED element provided in the second display unit, and has a high luminance. The LED element of the part is an LED display in which the lighting cycle is made shorter than the LED element of the display part having a low luminance .
A heating chamber for storing an object to be heated, an open / close door provided in the heating chamber, a heating means for heating the object to be heated in the heating chamber, a main control circuit for controlling the heating means, and a user setting for cooking A heating cooker comprising input means for performing the above and the LED display according to claim 1 .
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| JP2012221974A JP6244537B2 (en) | 2012-10-04 | 2012-10-04 | LED display and cooking device provided with this LED display |
| EP13187015.6A EP2717249A1 (en) | 2012-10-04 | 2013-10-02 | LED indicator and heating cooker having same |
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| JPH04306050A (en) | 1991-02-14 | 1992-10-28 | Ricoh Co Ltd | Led display device and facsimile equipment |
| JP2917876B2 (en) * | 1995-09-27 | 1999-07-12 | 日亜化学工業株式会社 | Display method of LED display |
| JPH11161230A (en) | 1997-11-21 | 1999-06-18 | Nec Corp | Led display device |
| JP2000047637A (en) * | 1998-07-28 | 2000-02-18 | Idemitsu Kosan Co Ltd | Driving method of organic electro-luminescence element and organic electro-luminescence device |
| JP2000206937A (en) * | 1999-01-19 | 2000-07-28 | Fuji Electric Co Ltd | Driving method for matrix display panel |
| JP3616729B2 (en) * | 1999-06-01 | 2005-02-02 | セイコーインスツル株式会社 | Luminescent display device |
| JP2001013904A (en) * | 1999-07-02 | 2001-01-19 | Seiko Instruments Inc | Light emitting display device drive circuit |
| JP4780815B2 (en) * | 1999-08-26 | 2011-09-28 | 三洋電機株式会社 | Driving method of electroluminescence display device |
| JP3265575B2 (en) * | 1999-12-24 | 2002-03-11 | 日本精機株式会社 | Light emitting display |
| JP2002287680A (en) | 2001-03-27 | 2002-10-04 | Toshiba Corp | Batch luminance adjustment system for led (light emitting diode) display |
| US20050134529A1 (en) * | 2003-12-18 | 2005-06-23 | Luiz Lei | Color changing segmented display |
| JP5194971B2 (en) * | 2008-04-09 | 2013-05-08 | パナソニック株式会社 | microwave |
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