DE19718911A1 - Screen saver for computer monitor screen - Google Patents
Screen saver for computer monitor screenInfo
- Publication number
- DE19718911A1 DE19718911A1 DE19718911A DE19718911A DE19718911A1 DE 19718911 A1 DE19718911 A1 DE 19718911A1 DE 19718911 A DE19718911 A DE 19718911A DE 19718911 A DE19718911 A DE 19718911A DE 19718911 A1 DE19718911 A1 DE 19718911A1
- Authority
- DE
- Germany
- Prior art keywords
- detector
- monitor
- user
- signal
- computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3231—Monitoring the presence, absence or movement of users
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
- G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
- G09G1/14—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible
- G09G1/16—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible the pattern of rectangular co-ordinates extending over the whole area of the screen, i.e. television type raster
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
- G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/04—Display protection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Hardware Design (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
Computermonitore besitzen in der Regel wie herkömmliche Fernsehgeräte eine Kathodenstrahl röhre (CRT) und eine fluoreszierende Mattscheibe, die punktweise leuchtet, sobald sie von dem Elektro nenstrahl getroffen wird. Bei längerer kontinuierlicher Bestrahlung eines Bildpunktes der Mattscheibe trägt diese einen irreparablen Schaden davon: Der Bildpunkt "brennt ein". Um diesen Effekt zu vermindern, sind Bildschirmschonmechanismen in Computersysteme implementiert, die den Monitor dunkel schalten oder ein Bewegtbild anstelle des eigentlichen Festbildes auf dem Bildschirm erzeugen. Solche Bildschirm schoner lassen sich entweder manuell aktivieren oder schalten sich automatisch ein, wenn für eine be stimmte, vorher fest spezifizierte Zeitdauer, keine Eingabeaktion (z. B. Tastendruck, Mausbewegung) sei tens des Benutzers mehr stattgefunden hat.Computer monitors usually have a cathode ray like conventional television sets tube (CRT) and a fluorescent focusing screen that lights up point by point as soon as it is removed from the electrical system beam is hit. With prolonged continuous irradiation of one pixel of the focusing screen this irreparable damage: The pixel "burns in". To reduce this effect, screen saver mechanisms are implemented in computer systems that turn the monitor dark or generate a moving image instead of the actual still image on the screen. Such screen savers can either be activated manually or switched on automatically if for a be agreed, previously specified duration, no input action (e.g. key press, mouse movement) least of the user has taken place.
Bei dieser Lösung ist jedoch die mangelnde Flexibilität einer festen zeitlichen Einschaltverzöge rung des Bildschirmschoners von Nachteil: Eine lange Verzögerungszeit läßt das Monitorbild noch lange Zeit eingeschaltet, nachdem der Benutzer seinen Arbeitsplatz schon längst verlassen hat, womit der Bild schirm nicht effektiv geschont wird. Ist die Verzögerungszeit dagegen auf einen zu kleinen Wert eingestellt, hat dies zur Folge, daß eine bereits relativ kurze Unterbrechung von Tastatur- und Mausaktionen (um z. B. das gerade geschriebene auf dem Bildschirm noch einmal durchzulesen) das aktuelle Bild abschaltet. Erst eine gesonderte Eingabeaktion baut das alte Bild wieder auf, was eine gewisse Zeit dauert und in der Regel als sehr störend empfunden wird.With this solution, however, there is the lack of flexibility of a fixed time delay disadvantage of the screen saver: A long delay time leaves the monitor image for a long time Time switched on after the user has long left his workplace, with which the picture shield is not effectively protected. In contrast, the delay time is too small set, this has the consequence that an already relatively short interruption of keyboard and Mouse actions (e.g. to reread what you just typed on the screen) that current picture turns off. Only a separate input action builds up the old picture again, which is a certain Time takes and is usually perceived as very annoying.
Moderne Computer und Peripheriegeräte besitzen außerdem Energiesparfunktionen (z. B. der "System Management Mode" des Intel Pentium® Prozessors, der durch einen von einer prozessorexternen Überwachungseinrichtung generierten Interrupt aufgerufen wird). Deren Aktivierung erfolgt nach ähnlichen Mechanismen, wie sie oben für die Aktivierung des Bildschirmschonbetriebs beschrieben wur den, womit sich der selbe Mangel an Flexibilität ergibt.Modern computers and peripheral devices also have energy-saving functions (e.g. the "System Management Mode" of the Intel Pentium® processor, which is replaced by one of an external processor Monitoring device generated interrupt is called). They are activated after Similar mechanisms as described above for the activation of the screen saver mode the one that results in the same lack of flexibility.
Aufgabe der Vorrichtung ist es daher, die Aktivierung von Bildschirmschonbetrieb bzw. Ener giesparmodus von der Abwesenheit des Benutzers abhängig zu machen. Auch andere Programme (z. B. zum Abspielen von Bildsequenzen oder Ausführen von rechenintensiven Prozessen, die den Ablauf anderer Programme behindern würden) können so bei Benutzerabwesenheit aktiviert werden. Die Aufgaben werden durch die in den Ansprüchen 1-19 gekennzeichneten Maßnahmen gelöst.It is therefore the task of the device to activate screen saver operation or energy make save mode dependent on the absence of the user. Other programs (e.g. for playing image sequences or executing computationally intensive processes that affect the flow of others Programs would hinder) can be activated when the user is absent. The tasks will be solved by the measures characterized in claims 1-19.
Ein externes Sensormodul entsprechend Anspruch 12 ist auf dem Computermonitor plaziert, so daß der Sensor die Anwesenheit des Benutzers am Computerarbeitsplatz erfassen kann, wie in Abb. 1 dargestellt. Als Sensor wird ein Infrarot-Reflexions-Lichttaster gemäß Anspruch 3 benutzt, der nach dem Prinzip der Hintergrundausblendung arbeitet, um auch eine Person mit dunkler Kleidung vor einem helleren Hintergrund sicher zu erkennen. Solche Lichttaster mit Tastweiten bis zu zwei Metern sind zum Beispiel das Modell FHDK 30 der Firma Baumer electric in Friedberg oder die Modelle WT 24 IR 2000 und WT 45 der Firma SICK in Waldkirch. Verbreitete Anwendung finden derartige Sensoren in öf fentlichen Toiletten für die Steuerung von Wasserspülungen.An external sensor module according to claim 12 is placed on the computer monitor so that the sensor can detect the presence of the user at the computer workstation, as shown in Fig. 1. An infrared reflection light scanner is used as the sensor, which works on the principle of background suppression in order to reliably recognize a person with dark clothing against a lighter background. Such light scanners with scanning distances of up to two meters are, for example, the FHDK 30 model from Baumer electric in Friedberg or the WT 24 IR 2000 and WT 45 models from SICK in Waldkirch. Such sensors are widely used in public toilets for controlling water flushing.
Das Sensormodul ist mit einer der seriellen Schnittstellen des Computers verbunden. Ein spei
cherresidentes Programm, hier "Modultreiber" genannt, sorgt für die Ansteuerung der Schnittstelle, wobei
dies in gleicher Weise erfolgt wie bei Maustreibern: Die Steuerleitungen der seriellen Schnittstelle liegen
auf konstantem Pegel (0 V, ± 12 V) und dienen dem Sensormodul so als Stromversorgung. Das Sensormo
dul gibt je nach An- oder Abwesenheit des Benutzers einen definierten Pegel (0 V oder ± 12 V) auf die
RxD-Leitung. Durch direkten Registerzugriff kann der Modultreiber die Anwesenheit des Benutzers abfra
gen, und diese Information wird von der Software, welche über die Aktivierung des Bildschirmschoners
bzw. Energiesparmodus entscheidet, zusammen mit vorher vom Benutzer eingestellten Parametern berück
sichtigt. So kommt es zum Beispiel zur Aktivierung des Bildschirmschoners, wenn
The sensor module is connected to one of the serial interfaces of the computer. A memory-resident program, here called "module driver", controls the interface, which is done in the same way as for mouse drivers: The control lines of the serial interface are at a constant level (0 V, ± 12 V) and serve the sensor module in this way as a power supply. Depending on the presence or absence of the user, the sensor module outputs a defined level (0 V or ± 12 V) to the RxD line. The module driver can query the presence of the user through direct register access, and this information is taken into account by the software which decides on the activation of the screen saver or energy-saving mode, together with parameters previously set by the user. For example, the screen saver is activated when
(B < 1 & E < 1) ODER (E < 15),
(B <1 & E <1) OR (E <15),
und der Energiesparmodus wird aktiviert, wenn
and the energy saving mode is activated when
(B < 5 & E < 5) ODER (E < 20),
(B <5 & E <5) OR (E <20),
wobei B = Zeit durchgehender Abwesenheit des Benutzers in Minuten,
E = Zeit ohne Eingabeaktion in Minuten.where B = time of continuous absence of the user in minutes,
E = time without input action in minutes.
Ein Sensor ist entsprechend Anspruch 15 in das Gehäuse des Monitors eingebaut und mit dem Mikrokontroller des Monitors verbunden. An einem externen Bedienelement oder im OSD (Bildschirm menü) des Monitors läßt sich einstellen, welche Zeit der Benutzer durchgehend abwesend sein maß, bevor der Monitor sein Bild abschaltet bzw. sich ausschaltet.A sensor is installed according to claim 15 in the housing of the monitor and with the Microcontroller of the monitor connected. On an external control element or in the OSD (screen menu) of the monitor can be set, which time the user was absent continuously before the monitor turns off or turns off its image.
Ein Sensor ist entsprechend Anspruch 16 in das Gehäuse des Monitors eingebaut und mit dem Mikrokontroller des Monitors verbunden. Über eine Rückleitung vom Monitor zum Computer (z. B. Moni tor ID-Bits-Pins 4, 11 und 12 eines 15poligen VGA-Analogmonitoranschlusses) wird letzterem der An wesenheitsstatus des Benutzers mitgeteilt, und unter Verwendung passender Software reagiert der Compu ter durch Auslesen des entsprechenden Registers mit Aktionen wie in Ausführungsbeispiel 1.A sensor is installed according to claim 16 in the housing of the monitor and with the Microcontroller of the monitor connected. Via a return line from the monitor to the computer (e.g. Moni tor ID bits pins 4, 11 and 12 of a 15-pin VGA analog monitor connection) the latter becomes the An Presence status of the user is communicated, and the compu reacts using suitable software ter by reading out the corresponding register with actions as in exemplary embodiment 1.
Ein Sensormodul entsprechend Anspruch 19 enthält einen Sensor und einen Timer, sowie einen Drehregler zur variablen Einstellung der Verzögerungszeit. Die Stromversorgung für das Modul liefert die serielle Schnittstelle, an welche auch die Maus angeschlossen ist. Die H-sync- oder V-sync-Leitung wird entsprechend Abb. 3 über einen Transistor geführt, der im Normalfall das Signal vom Computer zum Monitor durchschleift. Sobald die Abwesenheitsdauer des Benutzers die eingestellte Verzögerungszeit überschreitet, sperrt der Transistor, und das Synchronisationssignal erreicht den Monitor nicht mehr, so daß das Monitorbild verschwindet bzw. ein über entsprechende Powermanagementfunktionen verfügender Monitor abschaltet. Wenn der Benutzer wieder erscheint, schaltet der Transistor wieder durch und der Monitor wieder ein. A sensor module according to claim 19 contains a sensor and a timer, as well as a rotary controller for variable setting of the delay time. The power supply for the module is provided by the serial interface to which the mouse is connected. The H-sync or V-sync line is routed according to Fig. 3 via a transistor, which normally loops the signal through from the computer to the monitor. As soon as the absence period of the user exceeds the set delay time, the transistor blocks and the synchronization signal no longer reaches the monitor, so that the monitor image disappears or a monitor having appropriate power management functions switches off. When the user reappears, the transistor turns on again and the monitor turns on again.
In einem Großraumbüro sind alle Computerarbeitsplätze mit einem System nach Anspruch 10 ausgestattet. Jeder Benutzer trägt einen Sender, dessen Signal durch eine individuelle Kennung auf seinen Arbeitsplatzrechner abgestimmt ist. Das Signal besteht zum Beispiel aus einer bestimmten periodischen Folge von Signalimpulsen oder einem CDMA-Signal, bei dem die individuelle Kennung durch die Chipfolge (Signatur) definiert ist.In a large office, all computer workstations are with a system according to claim 10 fitted. Each user carries a transmitter, the signal of which is identified by an individual identifier Workstation computer is coordinated. For example, the signal consists of a certain periodic Sequence of signal pulses or a CDMA signal, in which the individual identifier by the Chip sequence (signature) is defined.
Das System erkennt die Anwesenheit des Benutzers und ermöglicht ihm allein das Arbeiten. Verläßt der Benutzer seinen Arbeitsplatz, wird ein Pausenprogramm aktiviert, und der Arbeitsplatz bleibt jedem anderen Benutzer verschlossen.The system recognizes the presence of the user and enables him to work alone. When the user leaves his workplace, a break program is activated and the workplace remains closed to any other user.
Ein Computer befindet sich als Ausstellungsgerät in einem Schaufenster. Ein pyroelektrischer Sensor nach Anspruch 2 ist in einem externen Modul untergebracht und gemäß Anspruch 12 mit dem Computer verbunden. Der Sensor ist auf den Bereich vor dem Schaufenster gerichtet. Der Computer befindet sich zunächst im Standby-Modus, der Monitor ist leer. Sobald ein Passant vor dem Schaufenster verweilt, was der Rechner durch Auswerten des Sensorsignals erkennt, wird ein Werbeprogramm aktiviert, das die Aufmerksamkeit des Passanten gezielt auf sich zieht.A computer is used as an exhibition device in a shop window. A pyroelectric Sensor according to claim 2 is housed in an external module and according to claim 12 with the Computer connected. The sensor is aimed at the area in front of the shop window. The computer is initially in standby mode, the monitor is empty. As soon as a passer-by in front of the shop window an advertising program is activated, what the computer recognizes by evaluating the sensor signal, that specifically draws the attention of passers-by.
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19718911A DE19718911A1 (en) | 1997-05-05 | 1997-05-05 | Screen saver for computer monitor screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19718911A DE19718911A1 (en) | 1997-05-05 | 1997-05-05 | Screen saver for computer monitor screen |
Publications (1)
Publication Number | Publication Date |
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DE19718911A1 true DE19718911A1 (en) | 1998-11-12 |
Family
ID=7828652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19718911A Withdrawn DE19718911A1 (en) | 1997-05-05 | 1997-05-05 | Screen saver for computer monitor screen |
Country Status (1)
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DE (1) | DE19718911A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29905567U1 (en) | 1999-03-26 | 1999-06-17 | Stiene, Wilhelm, 59192 Bergkamen | Device for wireless switching of a device e.g. TV through motion detectors |
DE29907657U1 (en) | 1999-04-30 | 1999-07-22 | Dübner, Egon, Dipl.-Ing., 51379 Leverkusen | Remote control for a consumer |
DE20000427U1 (en) | 2000-01-12 | 2000-04-20 | Loewe Opta GmbH, 96317 Kronach | Power switch for consumer electronics devices |
GB2352031A (en) * | 1999-07-12 | 2001-01-17 | Integrated Design Ltd | Room space divider with optical intruder alarm interfaced to computer workstation |
US6418536B1 (en) * | 1998-04-07 | 2002-07-09 | Samsung Electronics, Co., Ltd. | Power saving of a portable computer using human sensing device |
WO2002058030A2 (en) * | 2001-01-18 | 2002-07-25 | Square D Company | Remote metering display with motion sensor |
DE10332309A1 (en) * | 2002-11-13 | 2004-06-24 | Mitac Technology Corp. | Method and device for infrared remote control of a computer system |
DE102004031087A1 (en) * | 2004-06-28 | 2006-01-12 | Pflaum, Wilhelm C., Dipl.-Ing. | Energy saving device for a computer comprises a sensor that detects the physical presence of a person in front of the computer so that its power consumption can be changed accordingly |
WO2006102832A1 (en) | 2005-03-29 | 2006-10-05 | Huawei Technologies Co., Ltd. | Multimedia terminal and method of converting the operating state of multimedia terminal |
JP2012078959A (en) * | 2010-09-30 | 2012-04-19 | Nec Personal Computers Ltd | Information processing apparatus, control method and control program |
WO2015038404A1 (en) * | 2013-09-11 | 2015-03-19 | Motorola Mobility Llc | Electronic device and method for detecting presence and motion |
US9316736B2 (en) | 2013-09-11 | 2016-04-19 | Google Technology Holdings LLC | Electronic device and method for detecting presence and motion |
-
1997
- 1997-05-05 DE DE19718911A patent/DE19718911A1/en not_active Withdrawn
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6418536B1 (en) * | 1998-04-07 | 2002-07-09 | Samsung Electronics, Co., Ltd. | Power saving of a portable computer using human sensing device |
DE29905567U1 (en) | 1999-03-26 | 1999-06-17 | Stiene, Wilhelm, 59192 Bergkamen | Device for wireless switching of a device e.g. TV through motion detectors |
DE29907657U1 (en) | 1999-04-30 | 1999-07-22 | Dübner, Egon, Dipl.-Ing., 51379 Leverkusen | Remote control for a consumer |
GB2352031A (en) * | 1999-07-12 | 2001-01-17 | Integrated Design Ltd | Room space divider with optical intruder alarm interfaced to computer workstation |
DE20000427U1 (en) | 2000-01-12 | 2000-04-20 | Loewe Opta GmbH, 96317 Kronach | Power switch for consumer electronics devices |
US7185281B2 (en) | 2001-01-18 | 2007-02-27 | Square D Company | Remote metering display with motion sensor |
WO2002058030A2 (en) * | 2001-01-18 | 2002-07-25 | Square D Company | Remote metering display with motion sensor |
WO2002058030A3 (en) * | 2001-01-18 | 2002-12-19 | Square D Co | Remote metering display with motion sensor |
DE10332309A1 (en) * | 2002-11-13 | 2004-06-24 | Mitac Technology Corp. | Method and device for infrared remote control of a computer system |
DE102004031087A1 (en) * | 2004-06-28 | 2006-01-12 | Pflaum, Wilhelm C., Dipl.-Ing. | Energy saving device for a computer comprises a sensor that detects the physical presence of a person in front of the computer so that its power consumption can be changed accordingly |
WO2006102832A1 (en) | 2005-03-29 | 2006-10-05 | Huawei Technologies Co., Ltd. | Multimedia terminal and method of converting the operating state of multimedia terminal |
EP1868107A1 (en) * | 2005-03-29 | 2007-12-19 | Huawei Technologies Co., Ltd. | Multimedia terminal and method of converting the operating state of multimedia terminal |
EP1868107A4 (en) * | 2005-03-29 | 2012-06-27 | Huawei Tech Co Ltd | Multimedia terminal and method of converting the operating state of multimedia terminal |
JP2012078959A (en) * | 2010-09-30 | 2012-04-19 | Nec Personal Computers Ltd | Information processing apparatus, control method and control program |
WO2015038404A1 (en) * | 2013-09-11 | 2015-03-19 | Motorola Mobility Llc | Electronic device and method for detecting presence and motion |
US9316736B2 (en) | 2013-09-11 | 2016-04-19 | Google Technology Holdings LLC | Electronic device and method for detecting presence and motion |
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