CN101345041B - Image display device and its control method - Google Patents

Image display device and its control method Download PDF

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Publication number
CN101345041B
CN101345041B CN2008102149886A CN200810214988A CN101345041B CN 101345041 B CN101345041 B CN 101345041B CN 2008102149886 A CN2008102149886 A CN 2008102149886A CN 200810214988 A CN200810214988 A CN 200810214988A CN 101345041 B CN101345041 B CN 101345041B
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China
Prior art keywords
image display
power
usb
stage
microcomputer
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Expired - Fee Related
Application number
CN2008102149886A
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Chinese (zh)
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CN101345041A (en
Inventor
李炯坤
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LG Electronics Nanjing Plasma Co Ltd
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LG Electronics Nanjing Plasma Co Ltd
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Publication of CN101345041A publication Critical patent/CN101345041A/en
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Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4184—External card to be used in combination with the client device, e.g. for conditional access providing storage capabilities, e.g. memory stick
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0064—Earth or grounding circuit

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Power Sources (AREA)

Abstract

The invention discloses an image display device and control method thereof. The image display device of the invention includes a first power supply part (10) that provides a standby power supply to the image display device, a USB interface part (20) that is able to connect with the USB apparatus, a microcomputer (30) that operates through the standby power supply provided by the first power supply part (10), connecting to disposed port of the USB interface part, and that is capable of recognizing whether to connect to an external USB apparatus, and a second power supply part (40) that provides a main power to the image display device when the microcomputer (30) recognizes the connection of the USB apparatus. The invention further discloses the control method of the image display device that is able to automatically recognize whether to connect to the USB apparatus and to start a TV apparatus under the standby mode so as to improve the convenience for the user.

Description

A kind of image display and control method thereof
Technical field
The present invention relates to a kind of image display and control method thereof, even particularly relate to a kind of image display and the control method thereof that under the standby mode state, also can discern the USB device connection state automatically.
Background technology
The most representative image display is TV (TV) in the prior art, and appeared at the technology that is equipped with USB (Universal Serial Bus) module on the described TV equipment, make its image that can receive various external units and voice signal and export these signals.Described USB (Universal Serial Bus) is a kind of direct connection port, is the plug and play interface between peripherals such as audio player, control lever, keyboard, phone, scanner, printer and the computing machine.
USB (Universal Serial Bus) principle is identical with other direct connection port, but than the faster and easier connection of other direct connection port speed, support the data rate of 12Mbps, speed is very fast when therefore connecting use peripherals, can connect 127 devices at most.
Existing image display has been equipped with the automatic identification module of circumscribed USB equipment, so can realize the automatic recognition function to the operation of the USB device that connects.But the function of discerning automatically described in the prior art only is under the open mode and could realizes at the power supply of image display, can not automatic identification whether have described USB device under standby mode.
In addition, the TV broadcasting of current image display has a plurality of TV channels and can not be subjected to time restriction to carry out playing in 24 hours, also need to adjust viewing time and channel for the user, if the user also needs the head of a family's guidance for the minor, so need a kind of equipment at present, to realize that viewing time and channel are carried out self-adjusting function.
Summary of the invention
Even the objective of the invention is to be in the connection that also can discern USB device under the standby mode state automatically, primary power is provided thus and opens TV equipment automatically at image display.
Another object of the present invention is, is standard with the user authentication information in the USB device that is stored in described connection, control primary power use or ban use of.
Image display of the present invention comprises: signal of video signal handling part, display part also comprise: master control part; The 1st power suppling part of 5V standby power supply is provided; The USB interface portion that can be connected with external USB equipment; Can discern the microcomputer that whether connects described external USB equipment; The 2nd power suppling part of primary power can be provided to described image display; Described master control part is connected with described signal of video signal handling part, the 2nd power suppling part, USB interface portion respectively; Described the 1st power suppling part is connected with described microcomputer; And described the 1st power suppling part is the independent power feeding mechanism that does not rely on described the 2nd power suppling part; Described microcomputer is connected with described USB interface portion, first power suppling part, the 2nd power suppling part respectively; Described the 2nd power suppling part is connected with described master control part, microcomputer respectively, and described the 2nd power suppling part can provide primary power to described master control part after the connection of described microcomputer identification USB device.
Aforesaid image display is characterized in that: described microcomputer is connected with the grounding ports of described USB interface portion, can be according to described grounding ports state, and whether identification connects described external USB equipment.
Aforesaid image display is characterized in that: the grounding ports of described USB interface portion when not connecting USB device, the standby power supply that can provide by described the 1st power suppling part and keep high-end trim.
Aforesaid image display is characterized in that: the grounding ports of described USB interface portion produces the low level signal when connecting USB device.
Aforesaid image display is characterized in that: described master control part can be discerned the authentication key assignments that has been stored in the described external USB equipment.
Aforesaid image display is characterized in that also comprising the storage part that can store and be stored in the corresponding up time information of authentication key assignments of external USB equipment and can use at least one central information of channel information.
The control method of image display of the present invention comprises: image display enters the stage of standby (Standby) state; Whether identification connects the stage of external USB equipment under described stand-by state; When discerning the connection of described external USB equipment, provide the stage of primary power to described image display.
The control method of aforesaid image display is characterized in that: the stage whether identification connects described external USB equipment is: a state high position or low level signal according to the grounding ports of the described USB interface of identification portion judge whether connect described external USB equipment.
The control method of aforesaid image display is characterized in that: the stage of discerning a described high position or low level signal comprises: when not connecting described external USB equipment, be the stage that standard is kept high-end trim with the standby power supply; With when being connected described external USB equipment, produce the stage of low level signal.
According to the authentication of described authentication key assignments whether the control method of aforesaid image display is characterized in that: comprise the authentication key assignments of the USB device of discerning described connection,, select supply or cut off stage of the primary power of described supply.
The control method of aforesaid image display, it is characterized in that: the authentication key assignments that comprises the USB device of discerning described connection, with the corresponding up time information of authentication key assignments of identification and can use channel information to be standard, select to provide or to cut off the stage of described primary power.
The beneficial effect that the present invention reached:
Even image display of the present invention and control method thereof also can discern whether connect USB device automatically under the standby mode state, start TV equipment, improve user convenience, according to the authentication key assignments that whether authenticates in the USB device that is stored in described connection, carry out the function restriction and the power supply control of described image display, even have the effect that under the standby mode state, also can implement to use limitation function.
The synoptic diagram of Fig. 1 for showing that image display of the present invention is formed;
Fig. 2 is the process flow diagram of the control method of image display of the present invention.
Embodiment
Be specifically introduced below in conjunction with instantiation of the present invention, but the present invention is not limited to the embodiment that mentioned, also comprises available other inventions of mode such as interpolation, change, deletion that can be by another kind of element or is included in other embodiment in the inventive concept scope.
Fig. 1 is the composition synoptic diagram of an embodiment of image display of the present invention, and this image display comprises:
The 1st power suppling part 10 of 5V standby power supply is provided to described image display; With
Can be connected with external USB equipment, carry out USB interface portion 20 with the interface effect of the described USB device that is connected; With
Can provide standby power supply to operate by described the 1st power suppling part 10, be connected the establishing on the port of described USB interface portion 20, be used for discerning the microcomputer 30 that whether connects described external USB equipment; With
When having connected, provide the 2nd power suppling part 40 of primary power to described image display by described microcomputer 30 identification USB device; With
The corresponding up time information of authentication key assignments of storage USB device and can use the storage part 50 of channel information; With
The primary power that provides by described the 2nd power suppling part 40 drives, and by the authentication key assignments of described USB interface portion 20 identifications from described USB device input, controls the master control part 60 whether described the 2nd power suppling part 40 provides primary power; With
Can carry out signal Processing, so that can show signal of video signal handling part 70 by the signal of video signal of described USB device input; With
The display part 80 of the signal of video signal of signal Processing is carried out in demonstration by described signal of video signal handling part 70.
The operating process of image display of the present invention with described composition is as follows:
At first, when the user imported shutdown command, described microcomputer 30 was accepted after the order of described input, and the output control signal provides 5V standby power supply by described the 1st power suppling part 10.
At this moment, the 1st power suppling part 10 provides standby power supply to image display.
Described standby power supply does not provide the power supply to all IC (integrated circuit) of image display, but in order to allow the user realize that other functions activate the power supply of microcomputer 30.
At this moment, microcomputer 30 is connected in the grounding ports (GND) of described USB interface portion 20, provides standby power supply by the 1st power suppling part 10, is high-end trim thereby make grounding ports.
Described grounding ports plays and detect the effect that whether connects described USB device under stand-by state, be that described grounding ports utilizes described standby power supply 10 to rise to high-end trim, when not connecting described USB device, keep high-end trim, when connecting external USB equipment, be grounded, produce the low level signal, after microcomputer 30 recognized the state of grounding ports, whether identification had connected external USB equipment under stand-by state automatically.
In other words, the state of described grounding ports is low when connecting USB device, does not keep high state when connecting described USB device, and microcomputer 30 continues in the process of identification grounding ports states, if produce low signal, then export the control signal that primary power is provided to the 2nd power suppling part 40.
The 2nd power suppling part 40 provides primary power to described image display, opens TV equipment when connecting external USB equipment under stand-by state automatically.
Master control part 60 activates by the primary power of supply, and the authentication key assignments of the external USB equipment that identification connects is controlled the supply and the cut-out of described primary power 40.
Promptly, its corresponding information is stored to storage part 50, USB device is used restriction specifying described USB authentication key assignments by the user at first or in use.
At this, when the user sets the authentication key assignments, corresponding authentication key assignments is stored in the corresponding USB device particular file folder, and analog value is stored in the storage part 50, this moment is when connecting USB device, according to the USB device that is stored in connection in the whether consistent information of authentication key assignments, realize using or limiting the function of use.
Be when having the information consistent with the authentication key assignments that is stored in USB device in the authentication information of having stored in the described storage part 50, to continue the supply primary power, when not having consistent information, cut off primary power, described image display is used in restriction.
Storage part 50 is authentication storage corresponding up times of key assignments and can use channel information simultaneously, and limit respectively according to these information and to use described image display.
Master control part 60 is when successfully discerning the corresponding authentication key assignments of authentication by the USB device that connects, extract described up time information and can use channel information, if the current up time, control, continue to provide described primary power, if the time that cannot use, then cut off described primary power, closing device.Also can utilize and to use channel information, use control.
Even image display of the present invention also can be discerned the connection of USB device automatically under stand-by state, thereby open TV equipment,, realize the use limitation function of described image display thus according to the authentication key assignments of the USB device of described connection.
Fig. 2 is for introducing the process flow diagram of the control method of image display of the present invention stage by stage.Control method with image display of the present invention of described composition, at first the order according to user's input enters standby mode (S10).At this moment, primary power is cut off, and has only standby 5V standby power supply to provide to IC.
Then, discern the grounding ports state (S20) of described USB interface portion 20, the state of promptly discerning described grounding ports is for high or low.
And, judge whether the grounding ports state of described USB interface portion 20 is low (S30).Then, described judged result S30 is that described grounding ports state is height, waits for that then certain hour turns back to described stage S20 (S40) afterwards.
Described judged result S30 is described grounding ports state when low, and the signal (S50) of described image display is opened in output.
Then,, provide primary power, open described image display (S60) to described image display according to the signal of described output.Load the external USB equipment (S70) of current connection.Then, from described USB device, read corresponding authentication key assignments (S80).And, judge whether to authenticate the described authentication key assignments (S90) that reads.Then, when described judged result S90 is the described authentication key assignments of success identity, with the corresponding up time information of described authentication key assignments and can use channel information to be standard, judge whether to be current up time (S100).Promptly, the more described authentication key assignments that reads and be stored in authentication key value information in the storage part 50, if there is consistent information, then, judge whether current be the time that can use image display to be included in the up time information in the described consistent information and can to use channel information to be standard.
When described judged result S100 is present up time, continue to provide the primary power of described supply, realize the corresponding operating (S110) of the USB device of described connection.
Judged result S90 is authentification failure or described judged result S100 for being to use image display during the time at present as described, thereby the described primary power that provides 40 powered-downs (S120) are provided.
Image display of the present invention and control method thereof, even under stand-by state, thereby TV equipment is opened in the connection that also can discern USB device automatically, and can realize the various use limitation functions of described image display according to the authentication key assignments of the USB device of described connection.

Claims (11)

1. an image display comprises signal of video signal handling part (70), display part (80), it is characterized in that: also comprise master control part (60); The 1st power suppling part (10) of 5V standby power supply is provided; The USB interface portion (20) that can be connected with external USB equipment; Can discern whether connect described external USB equipment microcomputer (30); The 2nd power suppling part (40) of primary power can be provided to described image display; Described master control part (60) is connected with described signal of video signal handling part (70), the 2nd power suppling part (40), USB interface portion respectively; Described the 1st power suppling part (10) is connected with described microcomputer (30); And described the 1st power suppling part (10) is not for relying on the independent power feeding mechanism of described the 2nd power suppling part (40); Described microcomputer (30) is connected with described USB interface portion (20), first power suppling part (10), the 2nd power suppling part (40) respectively; Described the 2nd power suppling part (40) is connected with described master control part (60), microcomputer (30) respectively, described the 2nd power suppling part (40) can provide power supply to described master control part (60) after the connection of described microcomputer (30) identification USB device.
2. image display according to claim 1 is characterized in that: described microcomputer (30) is connected with the grounding ports of described USB interface portion (20), can be according to described grounding ports state, and whether identification connects described external USB equipment.
3. image display according to claim 2 is characterized in that: the grounding ports of described USB interface portion (20) when not connecting USB device, the standby power supply that can provide by described the 1st power suppling part (10) and keep high-end trim.
4. image display according to claim 3 is characterized in that: the grounding ports of described USB interface portion (20) produces the low level signal when connecting USB device.
5. image display according to claim 1 is characterized in that described master control part (60) can discern the authentication key assignments that has been stored in the described external USB equipment.
6. image display according to claim 5 is characterized in that also comprising the storage part (50) that can store and be stored in the corresponding up time information of authentication key assignments of external USB equipment and can use at least one central information of channel information.
7. the control method of the described image display of claim 1 is characterized in that: may further comprise the steps:
(1) described image display enters the stage of stand-by state;
(2) under stand-by state, discern the stage that whether connects external USB equipment;
(3) after the connection of the described external USB equipment of identification, provide the stage of primary power to described image display.
8. the control method of image display according to claim 7 is characterized in that: the stage whether identification connects described external USB equipment is: a state high position or low level signal according to the grounding ports of the described USB interface portion of identification (20) judge whether connect described external USB equipment.
9. the control method of image display according to claim 8, it is characterized in that: the stage of discerning a described high position or low level signal comprises: when not connecting described external USB equipment, be the stage that standard is kept high-end trim with the standby power supply; With when being connected described external USB equipment, produce the stage of low level signal.
10. according to the authentication of described authentication key assignments whether the control method of image display according to claim 7 is characterized in that: comprise the authentication key assignments of the USB device of discerning described connection,, select supply or cut off stage of the primary power of described supply.
11. the control method of image display according to claim 7, it is characterized in that: the authentication key assignments that comprises the USB device of discerning described connection, with the corresponding up time information of authentication key assignments of identification and can use channel information to be standard, select to provide or to cut off the stage of described primary power.
CN2008102149886A 2007-11-01 2008-09-02 Image display device and its control method Expired - Fee Related CN101345041B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2007-0110758 2007-11-01
KR1020070110758 2007-11-01
KR1020070110758A KR20090044605A (en) 2007-11-01 2007-11-01 Image display device and control method

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CN101345041B true CN101345041B (en) 2010-12-29

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