CN100391245C - Digital TV set channel control device and method when external device video recording - Google Patents
Digital TV set channel control device and method when external device video recording Download PDFInfo
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- CN100391245C CN100391245C CNB2005100460858A CN200510046085A CN100391245C CN 100391245 C CN100391245 C CN 100391245C CN B2005100460858 A CNB2005100460858 A CN B2005100460858A CN 200510046085 A CN200510046085 A CN 200510046085A CN 100391245 C CN100391245 C CN 100391245C
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Abstract
The present invention relates to a device and a method for controlling channels of a digital television during video recording by utilizing external equipment, which comprises the following steps: DTV broadcast signals to be recorded by a user are transmitted to the external equipment, and the video recording of the external equipment is executed; when video recording state information is received by the external equipment, the locking function of DTV channels is set or released according to the video recording state information of the external equipment. The locking function of the DTV channels can be automatically set by utilizing the present invention, which prevents the video recording mistake of video recording channel alteration caused by the channel operation of a user and enhances the system efficiency.
Description
Technical field
The present invention relates to digital television, the channel control apparatus and the method for digital television when specifically utilizing the external equipment video recording.
Background technology
Recently; according to following digital broadcasting plan; for by providing image quality to approach the number broadcasting of CD than case of conventional analog broadcast distinctness, tonequality; provide favorable service to the user; exploitation about the digital television of accepting digital broadcasting and the set top box of digital television etc. is very active, the built-in 2 groups of analog tuner of present most digital television and 1 group of digital tuner.
About the DTV signal processing piece of above-mentioned digital television and its running, be described in detail as follows:
As shown in Figure 1, DTV signal processing piece comprises as the lower part and constituting: in order to receive the signal input part 1 of the digital transmit input of accepting by digital tuner (omitting diagram); To be converted to the nominative formula converter section 2 of regulation definition form by the digital transmit of above-mentioned signal input part 1 input; In order will to be first signal processing part 3 of exportable signal aspect by the broadcast signal process of above-mentioned nominative formula converter section 2 conversions; Obtain the input of user's VCR (video tape recorder) video recording order, control first control part 5 of the transmit video recording of above-mentioned signal processing part 3 processing VCR (diagram is omitted); According to above-mentioned control part 5, accept the input format transformation of the broadcast singal that first signal processing part 3 handles, to the inferior format conversion portion 4 of VCR output.
The as above DTV signal processing piece of Gou Chenging, when the user thinks audiovisual DTV channel, by the tuning corresponding channel of digital tuner, by above-mentioned signal input part 1 input digital broadcast signal, and nominative formula converter section 2 is accepted input from above-mentioned signal input part 1, is converted to the regulation definition; Transmit by above-mentioned nominative formula converter section 2 format transformations transmits to signal processing part 3, is processed into after the exportable signal aspect to display device output (Main Display Output) by signal processing part 3.
According to user's requirement, when utilizing external equipment to be VCR video recording DTV channel, the broadcast singal that above-mentioned signal processing part 3 is handled is through exporting (VCROutput) to VCR behind time format conversion 4 format transformations.
As mentioned above, according to user's requirement, carry out to as during the demonstration output (Monitor Out) of the external equipment output DTV channel of VCR, according to VCR output pathway, obtain the input of the broadcast singal that signal processing part 3 handles, export by inferior format conversion portion 4.
But there are the following problems for above-mentioned DTV signal processing:
The one, because total DTV of DTV signal processing and VCR export pathway, exports demonstration output as shown in Figure 1 when can't export PIP (Picture in Picture).In other words, can't in the time of the subframe output DTV of PIP channel, carry out VCR video recording (VCR Output);
The 2nd, is because built-in 2 analog tuner of ATV (simulated television) signal processing module, make the key frame tuner follow user's control, the subframe tuner continues the channel in the tuning video recording, so even switching channels does not change channel in the video recording yet in the VCR video recording.But, during with VCR video recording DTV stream, because only have 1 group of digital tuner, the problem that the video recording channel is changed when existing the user to change the DTV channel.
Summary of the invention
The object of the present invention is to provide a kind of channel control apparatus and method of utilizing external equipment when video recording digital television, externally automatic setting DTV channel locking and prevention video recording are wrong and improve the inconvenience of using during equipment video recording DTV stream.
In order to achieve the above object, the DTV channel control apparatus that utilizes external equipment when video recording of the present invention is by constituting as the lower part: the tuner of accepting digital broadcast signal; The digital transmit that processing is accepted by above-mentioned tuner is the signal processing part of exportable signal aspect; When the user imports VCR video recording order, when external equipment is exported the transmit video recording of handling through above-mentioned signal processing part, to DTV channel setting locking (Locking) function, when video recording finishes, remove the control part of DTV channel locking (Locking) function.
At this moment, the feature of DTV channel control apparatus of the present invention is: its formation comprises digital broadcast signal of handling for outside portion equipment transmission signal processing part or the control line of accepting video state information from said external equipment in addition.
And, in order to achieve the above object, the DTV channel control method that utilizes external equipment when video recording of the present invention with comprise as the next stage be feature: carry the user to want the DTV broadcasting channel of recording a video, the stage of utilizing external equipment to record a video to external equipment; Also comprise the video state information that obtains said external equipment, set or remove stage DTV channel lock function according to the video state information of said external equipment.
At this moment, the stage of setting or removing DTV channel lock function according to the video state information of said external equipment also comprised as the next stage: the stage that judges whether to accept from said external equipment video state information; If external equipment is in video state, set the stage of DTV channel lock function; If external equipment is in the end video state, remove the stage of DTV channel lock function.
The present invention has following effect
1. the communication cable of connection external equipment and DTV appends control line and constitutes, and can judge the state of external equipment from DTV easily,
2. when external equipment is recorded a video the DTV broadcast singal, the locking of automatic setting DTV channel, the video recording mistake that prevention is operated the video recording channel alteration that causes because of user's channel has the effect that improves system effectiveness.
Description of drawings
Fig. 1 is that general DTV constitutes and the diagrammatic sketch of signal path output;
Fig. 2 constitutes block diagram for the DTV channel control apparatus in external equipment when video recording that utilizes of the present invention;
Fig. 3 is the external equipment DTV channel control method flow chart in when video recording that utilizes of the present invention.
Embodiment
With reference to accompanying drawing, illustrate that the DTV channel control apparatus and the method in external equipment when video recording utilized of the present invention is as follows:
Fig. 2 constitutes block diagram for the DTV channel control apparatus in external equipment when video recording that utilizes of the present invention.Be about having the digital television of a DTV, only illustrating the coherent signal processing block (20) (hereinafter referred to as the DTV system) of DTV with tuner.
As shown in Figure 2, TV channel control apparatus of the present invention comprises as the lower part and constituting: the tuner 24 of accepting digital broadcast signal; The digital transmit that processing is accepted by above-mentioned tuner 24 is the signal processing part 23 of exportable signal aspect; When the user imports VCR video recording order, when external equipment 10 is exported the transmit video recording of handling through above-mentioned signal processing part, set DTV channel locking (Locking) function, remove the control part 22 of DTV channel locking (Locking) function when video recording finishes.
Generally for the user being wanted the broadcast singal of recording a video records a video in external equipment 10, utilize telecommunication cable (Cable) to connect said external equipment 10 and DTV system 20, this moment, above-mentioned telecommunication cable was by forming as the lower part: in order to transmit the data wire (Data Line) to the data flow of video recording DTV channel to above-mentioned external equipment 10; In order to accept the control line (ControlLine) of video state information from said external equipment 10.And be connected in the connectivity port 21 of above-mentioned DTV system 20, and constitute because in telecommunication cable, appending above-mentioned control line, so the communications protocol between said external equipment 10 and the DTV system 20 is utilized mode from control line to DTV system 20 that pass on the present status information of oneself from external equipment 10 by.
In other words, the control part 22 of above-mentioned DTV system 20 is by the particular port that is connected with above-mentioned control line in connectivity port 21, accept said external and establish 10 state information, according to above-mentioned receive status information, judge the present status (end of recording a video or record a video) of external equipment 10, and above-mentioned control part 22 is according to the state information of accepting from said external equipment 10, if being in, external equipment 10 carries out video state, then to DTV channel setting lock function, if be in the video recording done state, function then unlocks.
The DTV channel control method of the present invention that constitutes like this is described in detail as follows:
As shown in Figure 3, S10: at first set the user and want the channel of recording a video and carry out recording function;
At this, above-mentioned DTV system 20 is according to user's video recording order, accept the respective broadcast signal by tuner 24, and be exportable signal with the above-mentioned broadcast signal process of accepting by above-mentioned signal processing part 23, and data wire by above-mentioned communication cable, the DTV broadcast singal that above-mentioned signal processing part 23 is handled sends external equipment 10 to, this moment, said external equipment 10, it is the control line that VCR passes through above-mentioned communication cable, send the video state information (video recording carries out signal, the video recording end signal) that shows oneself state to DTV system 20;
S20: above-mentioned DTV system 20 judges whether that accepting video recording from said external equipment 10 carries out signal after external equipment 10 transmits the broadcast singal of corresponding channels;
S30: above-mentioned judged result (S20), accept video recording from said external equipment 10 and carry out signal, be identified as external equipment (10) and begin video recording, and judge now whether DTV channel of video recording channel;
S40: above-mentioned judged result (S30), the channel of recording a video now is the DTV channel, then by forcing look to set lock function to above-mentioned DTV channel, fixed channel is not changed the channel in the video recording;
S50:DTV system 20 periodically judges whether to accept the video recording end signal from external equipment 10.
S60: The above results S50 does not accept video recording end signal (S50) from external equipment 10, then keeps DTV channel locking function, accepts video recording end signal (S50);
S60: be identified as the external equipment video recording and finish, remove above-mentioned DTV channel locking function.
Therefore, DTV of the present invention system 20 grasps the state (video recording carries out, and video recording finishes) of external equipments 10, and during by external equipment video recording DTV stream, to DTV channel automatic setting lock function fixed channel, it is impossible that channel alteration outside the video recording channel is become.
By the content that as above illustrates,, can not carry out numerous variations and modification even do not break away from the scope of technological thought of the present invention if will know with the dealer yet.
Therefore, technical scope of the present invention is not the content that is defined in the embodiment record, and should depend on patent claim.
Claims (2)
1. a channel control apparatus that utilizes external equipment when video recording digital television is characterized in that: have as the lower part: the tuner (24) of accepting digital broadcast signal; Handling the digital broadcast signal of accepting by above-mentioned tuner (24) is the signal processing part (23) of exportable signal aspect; The user imports VCR when order video recording, to DTV channel setting lock function, removes the control part (22) of DTV channel lock function when video recording finishes in the time of digital broadcast signal video recording from above-mentioned signal processing part (23) to external equipment (10) output that handle through; For data wire that transmits the digital broadcast signal that signal processing part (23) handles to external equipment (10) and the control line of accepting video state information from described external equipment (10).
2. a channel control method that utilizes external equipment when video recording digital television is characterized in that: comprise as the next stage: carry the user to want that the digital television broadcasting channel of recording a video carries out the stage of external equipment video recording to external equipment; Obtain the video state information of said external equipment, set or remove stage the digital TV channel lock function according to the video state information of said external equipment;
The stage of setting or removing the digital TV channel lock function according to the video state information of said external equipment also comprises the stage that judges whether to accept from said external equipment video state information; If external equipment is in video state, in order to make the fixing stage of digital TV channel being set lock function of channel; If external equipment is in the end video state, remove the stage of digital TV channel lock function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100460858A CN100391245C (en) | 2005-03-23 | 2005-03-23 | Digital TV set channel control device and method when external device video recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100460858A CN100391245C (en) | 2005-03-23 | 2005-03-23 | Digital TV set channel control device and method when external device video recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1838749A CN1838749A (en) | 2006-09-27 |
| CN100391245C true CN100391245C (en) | 2008-05-28 |
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| CNB2005100460858A Expired - Fee Related CN100391245C (en) | 2005-03-23 | 2005-03-23 | Digital TV set channel control device and method when external device video recording |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0775082A (en) * | 1993-09-02 | 1995-03-17 | Matsushita Electric Ind Co Ltd | Terminal equipment for catv |
| CN1115947A (en) * | 1993-12-13 | 1996-01-31 | 美国电报电话公司 | Cable television controller |
| JPH11112903A (en) * | 1997-09-30 | 1999-04-23 | Sanyo Electric Co Ltd | Television broadcasting receiver |
| US20010054181A1 (en) * | 2000-02-01 | 2001-12-20 | Corvin Johnny B. | Methods and systems for forced advertisi |
| CN1497977A (en) * | 2002-10-18 | 2004-05-19 | ������������ʽ���� | Digital troadcasting receiving machine |
-
2005
- 2005-03-23 CN CNB2005100460858A patent/CN100391245C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0775082A (en) * | 1993-09-02 | 1995-03-17 | Matsushita Electric Ind Co Ltd | Terminal equipment for catv |
| CN1115947A (en) * | 1993-12-13 | 1996-01-31 | 美国电报电话公司 | Cable television controller |
| JPH11112903A (en) * | 1997-09-30 | 1999-04-23 | Sanyo Electric Co Ltd | Television broadcasting receiver |
| US20010054181A1 (en) * | 2000-02-01 | 2001-12-20 | Corvin Johnny B. | Methods and systems for forced advertisi |
| CN1497977A (en) * | 2002-10-18 | 2004-05-19 | ������������ʽ���� | Digital troadcasting receiving machine |
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| CN1838749A (en) | 2006-09-27 |
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Owner name: NANJING LG XINGANG DISPLAY CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS (SHENYANG) CO., LTD. Effective date: 20091113 |
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Effective date of registration: 20091113 Address after: No. 346 Yao Yao Road, Nanjing economic and Technological Development Zone, Jiangsu Patentee after: LG Electronics Nanjing Display Co., Ltd. Address before: Liaoning Province, Shenyang Nanhu Technology Development Zone Hunnan Industrial Zone 35, No. 40 Patentee before: LG Electronics (Shenyang) Co., Ltd. |
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