KR100732165B1 - Power management method and apparatus for video equipment - Google Patents

Abstract

An improved apparatus and method for managing power of an imaging apparatus is provided. In a video device having a microcomputer, a signal processing circuit part, and a display part, signals of a DVR (Digital Video Recorder) mode and a DCR (Digital Cable Ready) mode are generated by a user's selection. In response to the DVR mode and the DCR mode signal, the power supply to the display unit is cut off and a power control signal corresponding to the modes is generated, and together with the power of the microcomputer in response to the power control signal corresponding to the DCR mode. At least one DCR power is supplied, and at least one DVR power is supplied together with at least one signal processing circuit power in response to a power control signal corresponding to the DVR mode. Therefore, unnecessary power consumption is minimized according to DCR and DVR functions.

Active Stand-by State Mode, Power Factor Correction

Description

The device and method for managing power of a video apparatus}

1 is a diagram illustrating an operation of a power management apparatus when a power management mode of a video device according to the related art is a standby mode.

2 is a diagram illustrating an operation of a power management apparatus when the power management mode of a video device according to the prior art is a normal mode.

3 is a diagram showing the configuration of another conventional power management device.

4 is a block diagram illustrating a configuration of a power management apparatus of a video device according to an embodiment of the present invention.

5 is a flowchart illustrating a power management method of an imaging apparatus according to the present invention.

* Explanation of symbols for main parts of drawings *

31: AC power input unit 32, 34a, 34b, 36, 40, 42: switch

33: standby power supply unit 35: microcomputer

36: display unit 37: power efficiency correction unit

38: multiple power supply 39: signal processing circuit

41: display power supply unit 43: mode signal providing unit

The present invention relates to a power management apparatus and method for an imaging apparatus.

Hereinafter, a power management mode of a video device according to the prior art will be described.

In a conventional video device to which a DCR (Digital Cable Ready) function is applied, the power management mode is divided into a stand-by mode and a normal mode.

Here, the stand-by state refers to a state in which only power enough to receive a remote control signal is supplied to the video apparatus. In addition, the normal state refers to a state in which all power is supplied so that a user can use and control a video device.

1 and 2 are block diagrams illustrating components of a power management apparatus of a video apparatus according to the prior art. Referring to Figure 1, the operation of the conventional power management device will be described.

1 is a diagram illustrating an operation of a power management apparatus when a power management mode of a video device according to the related art is a standby mode.

When the video device 1 is in the standby mode, AC power is applied to the AC input unit 2. In this case, the AC power is transmitted only to the first rectifier 3 connected to the microcomputer power supply 4 because the switch SW1 is not opened. The first rectifier 3 converts the transmitted AC power into DC power, and the DC power is supplied to the microcomputer power supply 4.

2 is a diagram illustrating an operation of a power management apparatus when the power management mode of a video device according to the prior art is a normal mode.

On the other hand, when the video device is in the normal mode, AC power is applied to the AC input unit 8. In this case, the switch SW2 is closed (on), so that not only the first rectifier 9 connected to the microcomputer power supply 10 but also other signals such as the signal processing power supply 13 and the display power supply 14 are provided. The AC power is also transmitted to the second rectifier 11 connected to the power supplies. The first rectifier 9 converts the AC power into a DC power and supplies the DC power to the microcomputer power supply 10. In addition, the second rectifier 11 converts the transmitted alternating current (AC) power into direct current (DC) power, and the direct current (DC) power is passed through a power factor correction unit (PFC: Power Factor Correction) 12, The DC power sources are supplied to all the power supply units such as the signal processing power supply unit 13 and the display power supply unit 14.

Here, the power efficiency correction unit (PFC) 12 means a kind of power saving circuit added to the power management device to improve power efficiency.

3 is a diagram showing the configuration of another conventional power management device.

The power management device of FIG. 3 includes an AC power input unit 21 for inputting AC power from the outside, a rectifier 29 for converting AC power from the AC power input unit 21 into DC power, and the DC power in standby mode. Standby power supply unit 22 for supplying 5V microcomputer power to the signal board microcomputer by using the power efficiency correction unit 23 is turned on in the active standby mode and the normal mode to efficiently correct the power, the power in the active standby mode The DC power supply through the efficiency correction unit 23 supplies 3.4V, 19V, 12V, and 6V DCR power, DVR (Digital Video Recorder) power, and signal circuit power, and 5V to the display module in the normal mode. Multiple power supply 24 for supplying display power, a display power supply for supplying display powers of Vs and Va to the display module in the normal mode. It consists of a part 25 and switches 26, 27, 28. Here, the switch 26 is turned on and closed in the active standby mode and the normal mode, and the switches 27 and 28 are turned on and closed only in the normal mode. As described above, in order to use the DVR / DCR function, the related art cuts off the display power supplied to the PDP module and maintains only the power supplied to the signal board in order to use the DVR / DCR function. This mode is called an active standby mode and in order to maintain this active mode state, the microcomputer controls the multiple power supplies in the PSU to supply DCR, DVR, and circuit power together. In other words, in the conventional active standby mode, that is, in the mode of shutting off the power supplied to the PDP module or display module to use the functions of the DCR / DVR and supplying only the low voltage output power supplied to the signal board, the multiple power supplies Since the whole supply unit is on and off together, DVR power is unnecessarily supplied even when the DVR function is not used.

The power supply apparatus of the conventional imaging apparatus described above has the following problems.

First, since the power management apparatus of the conventional video device includes only the preparation mode and the normal mode, even when the user tries to control the video device without operating the display module of the video device, the user always has to select the normal mode. Therefore, there is a problem in that display power is unnecessarily supplied to the display module even when the user does not want to operate the display module.

Second, even when low-voltage power supplies such as a standby mode and an active standby mode are unnecessary, the power efficiency correction unit (PFC) is unnecessary, so there is a rather inefficient problem in terms of power efficiency.

Third, even when the DVR function is not used, the DVR power is unnecessarily supplied through the multiple power supply unit, so there is a problem in that the DVR power is unnecessarily supplied.

It is an object of the present invention to provide a power management apparatus and method for a video device that can minimize power consumption by varying power management modes.

Another object of the present invention is a power management apparatus of an imaging apparatus that improves power efficiency by supplying power by subdividing via a power efficiency correction unit (PFC) even in an active standby mode to which low voltage output power is supplied; To provide a way.

It is still another object of the present invention to provide a power management apparatus and method for an image device capable of improving power consumption in the active standby mode by controlling power supply by dividing the active standby mode from the DCR mode and the DVR mode. .

In order to achieve the above object, the present invention divides the active standby mode into a DCR mode and a DVR mode. In the DCR mode, at least one DCR power is supplied by controlling a standby power supply through a signal board microcomputer. By controlling the multiple power supplies, supply at least one DVR power source to reduce unnecessary power consumption.

According to one embodiment of the present invention, a power management apparatus for a video apparatus includes a signal processing circuit unit, a display unit, a mode signal providing unit for providing DVR mode and DCR mode signals according to a selection, and the display unit in response to the mode selection signal. A signal board micom which cuts off power and provides a power control signal for the modes, a standby power supply unit which supplies at least one DCR power together with the power of the microcomputer when the power control signal corresponds to the DCR mode, and the power supply It includes a multiple power supply for supplying at least one DVR power with at least one signal processing circuit power when the control signal corresponds to the DVR mode.

Preferably, the power management modes include a standby mode in which only the microcomputer's power is supplied, a first active stand-by mode in which at least one DCR power is supplied, including the microcomputer's power, A second active stand-by mode in which at least one DVR power is supplied, including power, and a normal mode in which all powers are supplied.

Preferably, the video device includes a television to which a DCR (Digital Cable Ready) function and a DVR function are applied.

Preferably, the power supply of the microcomputer and the signal processing power are supplied in the second active stand-by mode.

Advantageously, said active stand-by mode comprises at least two modes.

Preferably, in the active stand-by mode, when only the microcomputer power supply and the DCR power are supplied, the corresponding power supplies are directly supplied without using a power factor correction unit (PFC).

According to another aspect of the present invention, there is provided a power management method of a video device, comprising: generating a DVR mode and a DCR mode signal by a user's selection in a video device having a microcomputer, a signal processing circuit part, and a display part; Interrupting power supply to the display unit in response to a mode signal and generating a power control signal corresponding to the modes; when the power control signal corresponds to the DCR mode, at least one DCR together with the power of the microcomputer; Supplying power, and supplying at least one DVR power supply with at least one signal processing circuit power when the power control signal corresponds to the DVR mode.

Preferably, in the standby mode and the first active stand-by mode, the microcomputer power supply and the DCR power are supplied without passing through the PFC (Power Factor Correction) unit.

According to the present invention as described above, it is possible to minimize the unnecessary power consumption by setting the power management mode in more various ways, and in the case of the first active standby mode to which low-voltage power is supplied, directly without passing through the power efficiency correction unit By supplying power sources, power is efficiently used.

Hereinafter, a preferred embodiment of the present invention that can specifically realize the above object will be described with reference to FIGS. 4 to 5.

Compared to the prior art in which the power management mode is limited to two, embodiments of the present invention provide a standby mode, a first active stand-by mode, a second active standby mode, and a normal mode. And the like. The technical feature of the present invention is that, unlike the prior art, the second active standby mode is added.

However, the scope of the present invention is not limited to the name of the second active standby mode and the like, and all modes of the video device including the concept of the modes to be described later all belong to the scope of the present invention.

The second active standby mode is an intermediate mode between the first active standby mode and the normal mode. That is, the standby mode is a mode for supplying a minimum power enough to power the video device through a remote controller or the like. In other words, this mode is to supply power only to the microcomputer. The normal mode is a mode for supplying all the power of the video device. On the other hand, the first active standby mode is a mode for supplying only the microcomputer power and at least one DCR power. The second active standby mode is a mode for supplying the microcomputer power, the at least one DVR power, and the signal processing power. In addition, the second active standby mode may supply at least one display power.

There is no particular limitation on the number of types of the active standby mode. For example, in the video device to which the DCR / DVR function is applied, the active standby mode may be set to supply power to the signal processor and the microcomputer, except for the display module. This is because, while the display module requires a high power, a user often does not display a screen of a video device and wants to perform only other functions such as recording.

The power supply of the display module may be, for example, a panel power supply in the case of a plasma display panel (PDP) display device, and an inverter power supply in the case of a liquid crystal display (LCD) display device. And, in the case of a CRT (Cathode Ray Tube) display device, it may be a power supply of the deflection processing unit.

4 is a block diagram illustrating a configuration of a power management apparatus of a video device according to an embodiment of the present invention. Referring to FIG. 4, the configuration and operation of a power management apparatus of an imaging apparatus according to the present invention will be described.

4 illustrates important components according to the present embodiment, and components for receiving and displaying broadcast signals from the video apparatus are omitted. However, even if the illustration and detailed description of the basic components are omitted, those skilled in the art can understand the video device to manage the power supply in various ways in accordance with the present invention in spite of this omission.

The power supply device of FIG. 4 includes a signal processing circuit part 39, a display part 36 (hereinafter PDP module), a mode signal providing part 43 which provides a DVR mode and a DCR mode selection signal according to selection, and the mode selection. A signal board micom 35 which cuts off power to the PDP module 36 in response to a signal and provides a power control signal for the modes, and the micom 35 in response to a control signal for the DCR mode. Standby power supply 33 for supplying at least one DCR power with the power of the power supply, and multiple power supply for supplying at least one DVR power with the power for the signal processing circuit 39 in response to the control signal for the DVR mode A multi-power 38.

The power supply of FIG. 4 further includes an AC power input 31 for applying AC power, a rectifier 32 for converting the AC power to DC power, and the PDP module 36. A display power supply (Vs / Va power) 41 for supplying power for display to the display, a power factor correction unit (PFC) 37, the AC power input unit 31 and the power efficiency correction unit A first switch 36 electrically connecting or disconnecting 37), a second switch 40 electrically disconnecting the rectifier 32 and the display power supply 41 in the DVR mode and the DCR mode, and the Two third connected to a standby power supply 33 to provide or cut off the at least one DCR power from the standby power supply 33 in response to the DCR mode power control signal from the microcomputer 35; Switches 34a, 34b.

The control signal for the DCR mode includes a switching on signal corresponding to the insertion of a point of deployment (POD) from the microcomputer 35 and a switching off signal corresponding to the removal of the POD. Herein, the power supply for the microcomputer is 5V, the power supply for the at least one DCR mode includes 5V and 3.3V, and the power supply for the at least one DVR mode and the power supply for the signal processing circuit are 19V, 12V, and 6V. Include.

In the normal mode, the multiple power supply unit 38 supplies 5V of power to the PDP module 36 through the fourth switch 42. As described above, the video device includes a television employing a DCR (Digital Cable Ready) / DVR function. In addition, the imaging apparatus may be a plasma display panel (PDP) device.

Hereinafter, the operation of the power supply apparatus according to the present embodiment will be described in detail with reference to FIG. 5. 5 is a flowchart illustrating an operation of the garden supply apparatus of the imaging apparatus according to the present embodiment. 5 is divided into an operation in the signal board micom 35 and an operation in a PDP power board corresponding to the display unit PDP module 36.

The AC power input unit 31 inputs AC power from the outside. The rectifier 32 converts the input AC power into DC power.

The mode signal providing unit 43 provides a mode signal for managing power supply of the video device according to a user's selection. The mode signal provider 43 also provides a POD presence signal corresponding to the DCR function selection and / or a mode signal corresponding to the DVR function selection.

The microcomputer 35 controls the first to fourth switches 34, 36, 40, and 42 according to the mode signal provided by the mode signal providing unit 43. That is, the first to fourth switches 34, 36, 40, and 42 operate on and off so that corresponding powers are supplied according to the provided mode signal under the control of the microcomputer 35.

Meanwhile, the power factor correction unit (PFC) 37 refers to a power saving circuit added between the AC input unit 31 and the power supply units 33, 38, and 41 to improve power efficiency. do.

The operation of the first to fourth switches 34, 36, 40, and 42 is determined according to a mode signal provided through the mode signal providing unit 43 selected by the user. Any one of a standby mode, a first active standby mode, a second active standby mode, and a normal mode. Here, the mode signal providing unit 43 is not particularly limited and may be a remote key or a local key attached to the video device.

First, when the power supply mode is a stand-by mode, the microcomputer 35 opens the switches 34, 36, 40, and 42 so that only the microcomputer 35 opens the direct current ( DC) Ensure power is supplied.

When the power supply mode is the first active stand-by mode, only the DCR function is selected. At this time, the microcomputer 35 turns on the switch 34 to close the microcomputer 35 so that the microcomputer 35 and the at least one DCR power are supplied from the standby power supply 33. The other switches 36, 40, and 42 are opened so that the at least one DVR power source and the signal circuit power source are not supplied. In addition, the at least one display power corresponding to a high power amount is not supplied to the PDP module 36. At this time, since a small amount of power is supplied so far, the AC power is not supplied to the power efficiency correcting unit 37. That is, if the amount of power supplied is not large, it is preferable to power the DCR power directly without passing through the power efficiency correction unit (PFC) 37.

When the power supply mode is the second active stand-by mode, the DVR function is selected. At this time, the microcomputer 35 turns on the switch 36 to close the microcomputer 35 so that the microcomputer power is supplied from the standby power supply 33 to the microcomputer 35 and from the multi-power supply 38. The at least one DVR power source and the signal circuit power source are supplied to the signal circuit unit 39. The other three switches 34, 40, and 42 are opened to prevent the at least one display power corresponding to a high power amount from being supplied to the at least one DCR power supply and the PDP module 36. In this case, since a relatively large amount of power is supplied, the AC power is also supplied to the power efficiency correcting unit 37 through the turned-on switch 36. The power applied to the signal processor 39 may be applied to, for example, a memory, a sound IC, an HDD, or the like.

Subsequently, when the power supply mode of the power supply device is a normal mode, when the normal mode signal is provided through the mode signal providing unit 43, the microcomputer 35 switches the switches 34, The microcomputer 35 and the at least one DCR power supply are supplied from the standby power supply 33 by turning on all of 36, 40, and 42 to close the contacts, and from the multiple power supply 38 The at least one DVR power source and the signal circuit power source are supplied to the signal circuit unit 39. In addition, the at least one display power corresponding to a high power amount is supplied to the PDP module 36. In this case, since a large amount of power is supplied, the AC power is also supplied to the power efficiency correcting unit 37 through the turned-on switch 36. Thus, all power sources are supplied via the power efficiency correction unit 37. In this case, the multiple power supply unit 38, which supplies power to the signal circuit unit 39, also supplies 5V of power to the PDP module 36 through the switch 42.

5 is a flowchart (flow chart) illustrating a power management method of an imaging apparatus according to the present invention. Referring to FIG. 5, a power management method of an imaging apparatus according to the present invention is as follows. The flowchart of FIG. 5 is divided into an operation of the signal board microcomputer 35 and an operation of a display (here, PDP) power board connected thereto.

The feature of the method of the present invention is characterized by a separate power management according to the DCR function and the DVR function. For example, in a video device having a microcomputer, a signal processing circuit part and a display part, the DVR mode and DCR mode signals are generated by a user's selection, and then the display power supply is cut off in response to the DVR mode and DCR mode signals. Generate a power supply control signal corresponding to the modes. Supply at least one DCR power supply with the power supply of the microcomputer in response to a power control signal corresponding to the DCR mode, and at least one power supply with at least one signal processing circuit power in response to the power control signal corresponding to the DVR mode. To supply DVR power.

In more detail, first, when the video device is powered on and AC power is input, the rectifier 32 first converts the AC power to DC power.

This state is a power standby mode, and 5 V power is supplied to the signal board microcomputer 35 basically. In addition, the microcomputer 35 determines which power mode the power management mode applied through the mode signal providing unit 43 is.

As a result of the determination, when the power management mode is the first active preparation mode, that is, when the DCR power supply mode is used, the microcomputer 35 closes the switches 34a and 34b to supply DCR power of 5V and 3.3V. Are supplied from the standby power supply 33. In this case, preferably, the microcomputer 35 opens the switch 36 so that the DCR power supplies are supplied directly without passing through the power efficiency correction unit (PFC) 37.

As a result of the determination, when the power management mode is the second active ready mode, that is, when the DVR power and signal circuit power supply modes are provided, the microcomputer 35 opens the switches 34a and 34b to 5V and 3.3. Prevents DCR powers of V from being supplied from the standby power supply 33. In this case, preferably, the microcomputer 35 closes the switch 36 so that the DVR power and the signal circuit powers of the 19V, 12V, and 6V are supplied through the power efficiency correction unit (PFC) 37. To be supplied from (38). Meanwhile, the microcomputer 35 opens the switches 40 and 42 so that the display powers Vs and Va are not supplied from the display power supply 41 to the display module, that is, the PDP module 36. Do not

As a result of the determination, in the normal power mode, the microcomputer 35 of the video device applies the DC power to all the power supply units 33, 38, and 41 (S507). That is, the microcomputer 35 closes the switches 34a and 34b so that DCR power sources of 5V and 3.3V are supplied from the standby power supply unit 33 together with the microcomputer power supply of 5V. At this time, preferably, the microcomputer 35 closes the switch 36 so that the DVR power and the signal circuit powers of the 19V, 12V, and 6V are supplied through the power efficiency correction unit (PFC) 37. To be supplied from (38). The microcomputer 35 closes the switches 40 and 42 so that the display power supplies Vs and Va are supplied from the display power supply 41 to the display module, that is, the PDP module 36. do. In this case, the multiple power supply 38 supplies 5V of display power to the display module 36. Therefore, in the normal power mode, the user can use all the functions of the video device.

5, when the video device is powered on, the 5V microcomputer power is basically supplied to the microcomputer 35. In addition, when the first active power mode is selected, the DCR power is supplied to the PDP power board depending on whether the POD card is inserted into the signal board microcomputer 35. On the other hand, if the second active power mode is selected on the signal board micom 35, i.e., if the DVR function is selected, the switch 36 is closed and the at least one DVR power and signal circuit to the PDP power board. Power is supplied. At this time, the power efficiency correction unit 37 operates. On the other hand, when the normal power mode is selected on the signal board microcomputer 35, the signal board microcomputer 35 closes the switches 40 and 42 so that the display module powers Vs, 5V, and Va. Are supplied from the multiple power supply 38 and the display power supply 41 to the PDP module 36, which is the display module.

The present invention is not limited to the above-described embodiments, and can be modified by those skilled in the art as can be seen from the appended claims, and such modifications are within the scope of the present invention.

The power management mode of the imaging apparatus according to the present invention described above and the effects of the apparatus are as follows.

First, the present invention has an effect of minimizing unnecessary power consumption by making the power supply mode more diversified.

Second, when the low voltage output power is supplied, the power is directly supplied to the power supply unit without passing through the PFC unit, thereby improving the efficiency of power consumption.

Claims (10)

Signal processing circuitry; A display unit; A mode signal providing unit providing a DVR (Digital Video Recorder) mode and a DCR (Digital Cable Ready) mode signal according to a selection; A signal board micom that cuts power to the display unit in response to the mode signal and provides a power control signal for the modes; A standby power supply for supplying at least one DCR power together with the power of the microcomputer when the power control signal corresponds to the DCR mode; And And a multi-power supply unit for supplying at least one DVR power source with at least one signal processing circuit power when the power control signal corresponds to the DVR mode. The method of claim 1, An AC power input unit for applying AC power; A rectifier for converting the AC power into DC power; A display power supply unit supplying power to the display unit; Power factor correction (PFC); A first switch electrically connecting or disconnecting the AC power input unit and the power efficiency correction unit; A second switch electrically disconnecting the rectifying unit and the display power supply unit in the DVR mode and the DCR mode; And At least one third switch coupled to the standby power supply to provide or cut off the at least one DCR power from the standby power supply in response to a power control signal corresponding to the DCR mode from the microcomputer; Power management device of the video device, characterized in that. The method of claim 2, The control signal corresponding to the DCR mode includes a switching on signal corresponding to the insertion of a point of deployment (POD) from the microcomputer and a switching off signal corresponding to the removal of the POD. The method of claim 1, The power source for the microcomputer is 5V, the at least one DCR power source includes 5V and 3.3V, and the at least one DVR power source and the signal processing circuit power source include 19V, 12V and 6V. Power management unit. The method of claim 1, And the multi-power supply unit supplies 5V power to the display unit through a fourth switch. The method of claim 1, And the video device includes a television employing DCR and DVR functions. The method of claim 1, And the imaging apparatus is a plasma display panel (PDP) apparatus. In a video device having a microcomputer, a signal processing circuit and a display, Generating a DVR mode signal and a DCR mode signal according to a user's selection; Interrupting power supply to the display unit in response to the DVR mode and DCR mode signals and generating a power control signal corresponding to the modes; Supplying at least one DCR power supply with the power supply of the microcomputer in response to a power control signal corresponding to the DCR mode; And And supplying at least one DVR power supply with at least one signal processing circuit power in response to a power control signal corresponding to the DVR mode. The method of claim 8, And the video device includes a television employing a DCR and a DVR function. The method of claim 8, And the imaging apparatus is a plasma display panel (PDP) device.

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