• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a digital TV, and more particularly, to a PIP audio listening device of a digital TV, which enables a wireless listening to audio data of a TV sub-screen through a headset having a Bluetooth function without a housewife switching of the digital TV. The PTV audio listening apparatus of the digital TV according to the present invention includes a main channel processor for processing and outputting audio and video signals input through a first channel in a digital TV receiving one or more broadcast signals; Sub-channel processing unit for processing the audio signal input through the Bluetooth module outputs, and a headset for wirelessly modulating the audio signal output from the sub-channel processing unit to the RF signal received.
    公开号:KR20030071061A
    申请号:KR1020020010587
    申请日:2002-02-27
    公开日:2003-09-03
    发明作者:홍성태；김재갑
    申请人:주식회사 엘지이아이；
    IPC主号:
    专利说明:

    PIP audio listening apparatus for digital TV
    [13] The present invention relates to a digital TV, and more particularly, to a PIP audio listening device of a digital TV, which enables a wireless listening to audio data of a TV sub-screen through a headset having a Bluetooth function without a housewife switching of the digital TV.
    [14] Currently, in a digital TV receiver, when a sub picture such as a PIP is supported, the viewer can hear only the audio of the main picture, but cannot hear the content of the sub picture.
    [15] Therefore, in order to listen to the audio of the sub-screen, it is troublesome to listen to the audio of the previous sub-screen as the current main screen only when the sub-screen is changed to the main screen through the housewife switching. .
    [16] Accordingly, an object of the present invention has been made in view of the above-mentioned problems of the prior art, and when a digital TV user simultaneously watches the sub-screen with the main screen, the sub-screen listening function is performed using Bluetooth built in the digital TV. To provide a PIP audio listening device of the digital TV provided.
    [1] 1 is a digital TV configuration showing a PIP audio listening device of the digital TV according to the present invention
    [2] Figure 2 is a first embodiment of the PIP audio listening device of the digital TV according to Figure 1
    [3] Figure 3 is a second embodiment of the digital TV PIP audio apparatus according to Figure 1
    [4] 4 is a diagram illustrating a Bluetooth protocol stack to be implemented in a digital TV and a headset according to the present invention.
    [5] 5 is an operation configuration diagram for audio listening between the digital TV and the headset through the stack according to FIG.
    [6] * Description of the symbols for the main parts of the drawings *
    [7] 10: main tuner 11: sub-tuner
    [8] 12: channel decoder 13: demultiplexer
    [9] 14: video decoder 15, 17: buffer memory
    [10] 16: Audio Decoder 18: NTSC / PAL Encoder
    [11] 19: Audio DAC 20: Bluetooth Modular
    [12] 21: system memory 22: microcomputer
    [17] According to an aspect of the present invention for achieving the above object, in the digital TV receiving one or more broadcast signals, the main channel processing unit for processing and outputting audio and video signals input through the first channel; Sub-channel processing unit for processing the audio signal input through the two channels and output to the Bluetooth module, and a headset for wirelessly modulating the audio signal output from the sub-channel processing unit to the RF signal.
    [18] Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.
    [19] First, as a reference, Bluetooth is a short-range wireless networking technology standard that wirelessly connects various digital home appliances as well as information and communication devices such as computers, printers, mobile phones, PDAs in homes or offices without physical cable connections.
    [20] It is a specification that provides standards such as transmission speed, transmission distance, and module size for wireless connection between digital devices at short distances.
    [21] Bluetooth uses radio frequencies in the 2.4 GHz Industrial Scientific Medical (ISM) band to enable wireless data communication even in the presence of obstacles, with a maximum transfer rate of 1 Mbps.
    [22] And although the transmission distance was initially 10m radius, the technology of reaching up to 100m in an open place is expected to emerge soon.
    [23] With Bluetooth, you can work with a wireless keyboard, then send and print data wirelessly to your printer, sit on the couch, browse the Internet, send and receive e-mail, and keep other information in your bag or pocket. It can also communicate with the device.
    [24] 1 is a digital TV configuration showing a PIP audio listening device of a digital TV according to the present invention.
    [25] As shown in FIG. 1, the PIP audio listening apparatus of the digital TV includes a main tuner unit 10, a sub tuner view 11, and digital broadcasts received by the tuner units 10 and 11 receiving a digital broadcast signal. A channel decoder 12 for decoding a signal for each channel, a demultiplexer 13 for separating a complex signal according to each channel in the channel decoder 12, and a video signal separated through the demultiplexer 13. A video decoding unit 14 for decoding video, a buffer memory unit 15 for temporarily storing a video signal, an audio decoding unit 16 for decoding an audio signal, and a buffer memory unit 17 for temporarily storing an audio signal It consists of.
    [26] The decoded video signal is encoded by the NTSC / PAL encoder 18 and output as a digital RG / B signal, a luminance / color difference (Y / C) signal, and a composite video signal (CVBS). The audio module of the main screen decoded by the audio decoding unit 16 is output to the audio DAC 19, and the Bluetooth module 20, the system memory unit 21, and the microcomputer which process the audio signal of the sub-screen are processed. It consists of 22.
    [27] FIG. 2 is a first embodiment of the PIP audio listening device of the digital TV according to FIG. 1.
    [28] As shown in FIG. 1, a block diagram illustrating an operation of a Bluetooth-embedded headset for listening to audio from a sub-screen of a Bluetooth-enabled digital TV is provided. PIP of digital TV By sending audio data from the small window to the headset, the contents of the digital TV sub-screen window can be easily checked.
    [29] FIG. 3 is a second embodiment of the PIP audio listening device of the digital TV according to FIG. 1.
    [30] Referring to FIG. 3, the contents of the call coming from the sub-screen of the digital TV with built-in Bluetooth, which is a video call, are listened to using a headset with a built-in Bluetooth. You can talk to the other party using a Bluetooth headset without disturbing the TV.
    [31] 4 is a diagram illustrating a Bluetooth protocol stack to be implemented in a digital TV and a headset according to the present invention.
    [32] Referring to FIG. 4, when the headset transmits the digital TV through the modem control signal and the AT commands RECOMM, the digital TV responds to the signal and opens an SCO channel to transmit audio data to the headset.
    [33] From this time, the audio of the digital TV can be heard through the headset.
    [34] FIG. 5 is a diagram illustrating an operation for audio listening between a digital TV and a headset through the stack according to FIG. 4.
    [35] Referring to FIG. 5, when the digital TV is turned on, it searches for a Bluetooth device in the vicinity, has information on the found Bluetooth devices, and turns on a PIP in the digital TV to find a headset that supports the Bluetooth. Complete the physical layer connection between headsets.
    [36] The LED on the headset blinks to indicate this.
    [37] At this time, the digital TV is informed that it is ready to connect to the digital TV by pressing a button attached to the headset.
    [38] The headset then sends a digital AT command from the headset to set the connection parameters.
    [39] Finally, when the setup between the two devices is complete, the SCO channel is actually opened to send audio data, and the digital TV wirelessly transmits the audio data to the headset.
    [40] As described above, the present invention provides a sub-screen listening function by using a Bluetooth built in the digital TV when the digital TV user watches the sub-screen such as PIP at the same time. Users who see the screen can easily understand the contents of the screen.
    [41] In addition, it provides an audio listening function of the digital TV sub-screen using Bluetooth, thereby improving the quality of the digital TV.
    [42] Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.
    [43] Therefore, the technical scope of the present invention should not be limited to the contents described in the examples, but should be defined by the claims.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] A digital television receiving one or more broadcast signals.
    A main channel processing unit which processes and outputs audio and video signals input through the first channel;
    A sub channel processing unit which processes an audio signal input through a second channel and outputs the audio signal to a Bluetooth module;
    And a headset for wirelessly modulating and receiving the audio signal output from the sub-channel processing unit with an RF signal.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-02-27|Application filed by 주식회사 엘지이아이
    2002-02-27|Priority to KR1020020010587A
    2003-09-03|Publication of KR20030071061A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020020010587A|KR20030071061A|2002-02-27|2002-02-27|PIP audio listening apparatus for DTV|
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