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Broadcast receiving apparatus to minimize standby power and method thereof

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Broadcast receiving apparatus to minimize standby power and method thereof


A broadcast receiving apparatus to minimize standby power and a method thereof. The broadcast receiving apparatus includes a sensor to detect variation in an inputted alternating current (AC) voltage and outputting a direct current (DC) voltage corresponding to the detection result, and a controller to detect variation in currents based on a digital voltage corresponding to the DC voltage and to determine the on/off state of an external apparatus, connected to the broadcast receiving apparatus, according to the detection result of the controller. Therefore, it is possible to determine whether the external apparatus is switched on or off according to a variation in power supplied to the external apparatus, to cut off a power supplied to the external apparatus based on the determination result, and to selectively control a power supplied to components of the broadcast receiving apparatus based on power saving data.
Related Terms: Elective

Browse recent Samsung Electronics Co., Ltd patents - Suwon-si, KR
USPTO Applicaton #: #20140125872 - Class: 348730 (USPTO) -


Inventors: Dong-hyun Chang

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The Patent Description & Claims data below is from USPTO Patent Application 20140125872, Broadcast receiving apparatus to minimize standby power and method thereof.

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CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Divisional Application of prior application Ser. No. 11/652,002, filed on Jan. 11, 2007 in the United States Patent and Trademark Office, which claims priority under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2006-0072880, filed on Aug. 2, 2006, in the Korean Intellectual Property Office, the entire disclosure of which is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present general inventive concept relates to a broadcast receiving apparatus to minimize standby power used, and a method thereof. More particularly, the present general inventive concept relates to a broadcast receiving apparatus, and a method thereof which is capable of converting to a mode to save power in response to an on/off state of an external apparatus connected thereto.

2. Description of the Related Art

Two screen display methods for video signals are an interlaced scanning method and a progressive scanning method. The progressive scanning method is used in computer monitors, digital TVs, digital video recorders (DVRs), etc., to display a whole frame at once using one image frame as a frame unit in a manner similar to the manner in which a film is projected onto a screen. The interlaced scanning method is used in analog TV broadcasting to display odd lines of a screen first and then even lines.

Generally, a broadcast receiving apparatus, as an apparatus which receives digital satellite broadcasting, converts a digital broadcast or an analog broadcast transmitted from a broadcasting station and video and audio signals inputted from various external apparatus, such as video players, DVD players, and the like, into a transport stream (TS) signal to transmit to a display device. A representative example of the above broadcast receiving apparatus includes a set-top box, which connects a television to other external signal sources.

A set-top box converts a signal to content to be displayed on a screen. The signal source may be an Ethernet cable, a satellite dish, a coaxial cable, a television line, or even an ordinary very high frequency (VHF) or ultra high frequency (UHF) antenna. At this time, the content may include video, audio, Internet webpages, interactive games, or other possibilities.

FIG. 1 is a block diagram illustrating a conventional broadcast receiving apparatus. The broadcast receiving apparatus in FIG. 1 comprises a tuner 10, a signal processor 20, a controller 30, a switching part 40, and a power supplier 50.

The tuner 10 receives and tunes a broadcast signal corresponding to a channel selected by a user from the broadcasting station.

The signal processor 20 processes the broadcast signal provided from the tuner 10 to output video, audio and data signals separately.

The controller 30 determines whether a channel of a broadcast receiving apparatus 100 is changed, and controls the switching part 40 to cut off the power supplied to an external apparatus 200 based on the results of the determining step.

Specifically, if the channel of the broadcast receiving apparatus 100 is not changed for a preset predetermined period of time, the controller 30 controls the switching part 40 so that the power supplied from the power supplier 50 is not supplied to the external apparatus 200.

However, since it is determined that a user is not viewing the broadcast according to the result of determining whether a user is viewing the broadcast based on whether the channel has changed, power transmission to both the broadcast receiving apparatus and the external apparatus connected to the broadcast receiving apparatus is suspended simultaneously. In this case, when the user views the broadcast for a long period of time without changing the channel, the conventional broadcast receiving apparatus determines that the user is not viewing the broadcast, so power transmission to the broadcast receiving apparatus is suspended. Therefore, it is difficult to control an alternating current power of the external apparatus at a desired time.

SUMMARY

OF THE INVENTION

The present general inventive concept provides a broadcast receiving apparatus, and a method thereof, which can determine an on/off state of an external apparatus according to variation in power supplied to the external apparatus, and change a mode of the broadcast receiving apparatus to a power saving mode based on the determination result to cut off the power supplied to the external apparatus.

Additional aspects and advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.

The foregoing and/or other aspects and utilities of the present general inventive concept may be achieved by providing a broadcast receiving apparatus including a sensor, which detects variation in an input alternating current (AC) voltage and outputs a direct current (DC) voltage corresponding to a detection result, and a controller, which detects variation in current based on a digital voltage corresponding to the DC voltage and determines an on/off state of an external apparatus, connected to the broadcast receiving apparatus, according to the detection result.

The broadcast receiving apparatus may further include an analog-to-digital (A/D) converter, which converts the DC voltage to the digital voltage. The controller may detect the variation in the current based on the digital voltage received from the A/D converter to determine the on/off state of the external apparatus.

The controller may determine whether a width of the current variation is equal to or greater than a preset reference variation width while detecting variation in the current based on a continuously received digital voltage. If the width of the current variation is equal to or greater than the preset reference variation width, it can be determined that the on/off state of the external apparatus has changed.

If it is determined that the on/off state of the external apparatus has changed, the controller may compare the DC voltage before the change with the DC voltage after the change. As a result, if the DC voltage after the change is equal to or greater than the DC voltage before the change, it can be determined that the external apparatus is switched on. If the DC voltage after the change is less than the DC voltage before the change, it can be determined that the external apparatus is switched off.

If it is determined that the on/off state of the external apparatus has changed, the controller may compare the DC voltage after the change with a preset reference voltage. As a result, if the DC voltage after the change is equal to or greater than the preset reference voltage, it can be determined that the external apparatus is switched on. If the DC voltage after the change is less than the preset reference voltage, it can be determined that the external apparatus is switched off.

If it is determined that the external apparatus is switched off, the controller may calculate a time during which the external apparatus remains switched off until being switched on again. At this time, if the time during which the external apparatus is switched off exceeds a preset reference time, the controller may cut off the AC voltage supplied to the external apparatus.

The broadcast receiving apparatus may further include a micom, which selectively cuts off the power supplied to components inside the broadcast receiving apparatus based on power saving data. If the time during which the external apparatus is switched off exceeds the preset reference time, the controller may provide the power saving data to a micom.

The broadcast receiving apparatus may further include an interface to set the preset reference time and the power saving data.

If an operation command is received to operate the broadcast receiving apparatus, the micom may supply power to the components contained in the power saving data, and transmit a power saving mode termination command to the controller.

The broadcast receiving apparatus may further include a switching part, which supplies or cuts off the AC voltage inputted from the sensor to the external apparatus under control of the controller. If the power saving mode termination command is received, the controller may return the external apparatus to a state it was in prior to entering a power saving mode and control the switching part to supply the AC voltage to the external apparatus.

The foregoing and/or other aspects and utilities of the present general inventive concept may also be achieved by providing a power control method of a broadcast receiving apparatus, the method including detecting variation in an input alternating current (AC) voltage and outputting a direct current (DC) voltage corresponding to a detection result, and detecting variation in current based on a digital voltage corresponding to the DC voltage and determining an on/off state of an external apparatus, connected to the broadcast receiving apparatus, according to the detection result.

The method may further include converting the DC voltage to the digital voltage. The determining may include detecting the variation in the current based on the converted digital voltage to determine the on/off state of the external apparatus.

The determining may include determining whether a width of the current variation is equal to or greater than a preset reference variation width while detecting the variation in the current based on the continuously received digital voltage. If the width of the current variation is equal to or greater than the preset reference variation width, it is determined that the on/off state of the external apparatus has changed.

The determining may include comparing the DC voltage before the change with the DC voltage after the change if it is determined that the on/off state of the external apparatus has changed, determining that the external apparatus is switched on if the DC voltage after the change is equal to or greater than the DC voltage before the change, and determining that the external apparatus is switched off if the DC voltage after the change is less than the DC voltage before the change.

The determining may include comparing the DC voltage after the change with a preset reference voltage if it is determined that the on/off state of the external apparatus has changed, determining that the external apparatus is switched on if the DC voltage after the change is equal to or greater than the preset reference voltage, and determining that the external apparatus is switched off if the DC voltage after the change is less than the preset reference voltage.

The determining may include calculating a time during which the external apparatus remains switched off until being switched on again; and controlling the AC voltage supplied to the external apparatus to be cut off if the time during which the external apparatus is switched off exceeds a preset reference time.

The method may further include controlling the power supplied to components inside the broadcast receiving apparatus to be selectively cut off based on power saving data. If the time during which the external apparatus is switched off exceeds the preset reference time, the determining may include providing the power saving data during the controlling.

The method may further include setting the preset reference time and the power saving data.

If an operation command is received to operate the broadcast receiving apparatus, the controlling may include supplying power to the components contained in the power saving data, and transmitting a power saving mode termination command.

The method may further include switching the AC voltage input during the outputting of the DC voltage to be supplied or cut off to the external apparatus according to the results of the determining. If the power saving mode termination command is received, the determining may include returning the external apparatus to a state it was in prior to entering the power saving mode and controlling switching to supply the AC voltage to the external apparatus.

The foregoing and/or other aspects and utilities of the present general inventive concept may also be achieved by providing a computer-readable medium having embodied thereon a computer program to execute a method of power control method of a broadcast receiving apparatus, the method including detecting variation in an input alternating current (AC) voltage and outputting a direct current (DC) voltage corresponding to a detection result, and detecting variation in current based on a digital voltage corresponding to the DC voltage and determining an on/off state of an external apparatus, connected to the broadcast receiving apparatus, according to the detection result.

The foregoing and/or other aspects and utilities of the present general inventive concept may also be achieved by providing a broadcast receiving system including an external device and a broadcast receiving device including a controller to detect a current variation based on an input from a sensor and to control a power on/off state of the external device which is connected to the broadcast receiving device according to the detected result.

The foregoing and/or other aspects and utilities of the present general inventive concept may also be achieved by providing a power control method of a broadcast receiving system, the method including detecting a variation in a power supply, determining whether an on/off state of an external device has changed based on the detected variation, if it is determined that the external device is off, calculating a time period during which the external device is off, and controlling a power saving mode of the broadcast receiving system if the calculated time period is greater than a predetermined time period.

The foregoing and/or other aspects and utilities of the present general inventive concept may also be achieved by providing a computer-readable medium having embodied thereon a computer program to execute a power control method of a broadcast receiving apparatus, the method including detecting a variation in a power supply, determining whether an on/off state of an external device has changed based on the detected variation, if it is determined that the external device is off, calculating a time period during which the external device is off, and controlling a power saving mode of the broadcast receiving system if the calculated time period is greater than a predetermined time period.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other aspects and advantages of the present general inventive concept will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a block diagram illustrating a conventional broadcast receiving apparatus;

FIG. 2 is a block diagram illustrating a broadcast receiving apparatus according to an embodiment of the present general inventive concept; and

FIG. 3 is a flowchart illustrating operation of the broadcast receiving apparatus according to an embodiment of the present general inventive concept.

Throughout the drawings, the same drawing reference numerals will be understood to refer to the same elements, features and structures.

DETAILED DESCRIPTION

OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the embodiments of the present general inventive concept, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present general inventive concept by referring to the figures.



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stats Patent Info
Application #
US 20140125872 A1
Publish Date
05/08/2014
Document #
14153310
File Date
01/13/2014
USPTO Class
348730
Other USPTO Classes
International Class
04N5/63
Drawings
4


Elective


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