KR20110050155A - A control method of digital media player - Google Patents

Abstract

The present invention relates to a method for controlling a digital media playback device, the method comprising: obtaining a playback speed of a file currently being played from a decoding unit; obtaining a transmission speed of a file transmitted through a network; If the one of the items included in the error response menu is selected, displaying the reproduction speed, the transmission speed and the error response menu on the screen; and performing an error response operation corresponding to the selected error response item. do. As a result, the current network transmission speed and the reproduction speed of the file being played are displayed together so that the user can recognize an error such as a current network problem and respond to the error.

Digital media playback device, transmission, decoding, speed, display

Description

A control method of digital media player

The present invention relates to a control method of a digital media player, and more particularly, to a control method of a digital media player that enables a user to recognize an error such as a current network problem and respond to the error.

Recently, the network can be used to exchange AV (Audio / video) content such as music or video. For example, you can watch television programs or listen to music on the Internet. In addition, a home network service that connects various AV devices in a home and easily enjoys AV contents is spreading. To achieve this, several automation mechanisms are required. Home appliances need not be simply connected to the LAN interface or have a wireless LAN function. Instead, the home appliances should be configured to recognize each other's existence through the network, to check whether there is content, and to exchange desired content.

As such, various middlewares (for example, HaVi, Jini, VESA, DLNA, etc.) are used to recognize the presence of a partner through a network and to find and exchange content.

One such middleware, DLNA (Digital Living Network Alliance), can provide compatibility for sharing all content provided from devices such as TVs, VCRs, digital cameras, and audio systems.

An object of the present invention is to display the current network transmission speed and the playback speed of a file being played together so that the user can recognize the error and respond to the error if the playback speed is larger than the transmission speed. It is in the provision of the method.

According to an aspect of the present invention, there is provided a control method of a digital media playback apparatus, the method including: acquiring a reproduction speed of a file currently being played from a decoding unit; acquiring a transmission speed of a file transmitted through a network; If the speed is greater than the transmission speed, displaying the reproduction speed, transmission speed, and error response menu on the screen, and if any one of the items included in the error response menu is selected, the corresponding error response item is selected. Performing an error response operation.

In the performing of the error response operation, when a playback item is selected after buffering the storage medium in the error response menu, the data transmitted through the network to the storage medium is buffered by a predetermined size and then played.

The storage medium is characterized in that provided as a HDD (Hard Disk Drive).

The reproducing speed obtaining step may include reproducing a reproducing speed by calculating an average of bit rates obtained from a decoding unit which decodes a file transmitted through a network.

The obtaining of the transmission rate may include obtaining a transmission rate by calculating an average of bitrates from a file transfer start time to a display time point.

In the displaying step, the occurrence of the buffer underrun is monitored, and when the buffer underrun occurrence exceeds the set number of times, the reproduction speed, transmission speed, and an error response menu are displayed on the screen.

The performing of the error response operation may include calculating and displaying a buffering time based on the transmission speed and the playback speed when a playback item is selected after buffering the storage medium in the error response menu, and performing buffering for the required time. And decoding and reproducing the buffered data.

And after the buffering step, displaying a playback start selection screen at a playable time point.

The control method of the digital media playback apparatus according to the present invention displays the current network transmission speed and the playback speed of the file being played together so that the user recognizes such an error when the playback speed is larger than the transmission speed, and transmits the error to the storage medium through the network. An error can be coped by buffering the transmitted data by a set size and then reproducing it.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1 is a diagram illustrating a digital living network alliance (DLNA) system according to an embodiment of the present invention.

Referring to the drawings, a DLNA system according to an embodiment of the present invention is a digital media server (DMS) 102, a digital media controller (DMC) 104, an access point (AP) 106, a digital media player (DMP). ) 108 and a Digital Media Renderer (DMR) 110.

DLNA is middleware that supports the acquisition, transmission, and management of digital media content (eg, photos, music, videos, etc.) from mobile devices or personal computers (PCs). In other words, using DLNA, media content can be conveniently enjoyed regardless of the location and the device in the home.

To this end, the DLNA system may be based on UPnP, and may be a wired and wireless network system including DMS, DMP, DMC, and DMR.

In this case, the DMS 102, the DMP 108, and the DMC 104 may each be a mobile-digital media server (M-DMS), a mobile-digital media player (M-DMP), or a mobile-digital media (M-DMC). Controller). The M-DMS, M-DMP, M-DMC, or the like may be directly connected to the DLNA system, or may be connected to the DLNA system through an access point (AP) 106. In addition, the AP 106 may have a Mobile-Network Connection Function (M-NCF) as an intermediate node for connecting the M-DMS to the M-DMP.

In addition, the DLNA system may configure a home network using a wired network (IEEE 802.3) or a wireless network (IEEE 802.11). In this case, DMS, DMP, and DMR on the home network may also be interconnected through a wired (IEEE 802.3) or wireless network (IEEE 802.11), and digital devices on the home network may transmit data such as video and audio by IEEE 1394. Do.

Meanwhile, the DMS 102 may access content in the Universal Plug and Play (UPnP) AV area, and store or provide digital media content to the DMR 110. In this case, the DMC 104 may provide a search function for searching for digital media content items in the DMS 102 including a control point (CP) that is a UI application (User-Interface Application). On the other hand, the relationship between the DMS 102 and the DMR 110 is, for example, if the DMS 102 is a broadcast receiving device for receiving digital broadcasts, a DMC (receiving and storing a broadcast signal and controlling the DMR 110) If requested at 104, the selected content may be provided to the DMR 110.

The DMC 104 may be located between the DMS 102 and the DMR 110 to perform playback control of the DMR 110 and receive a content list generated by the DMS 102. The DMC 104 controls the DMS 102 to transmit the selected specific content to the DMR 110 through the control signal transmission between the DMS 102 and the DMR 110.

The AP 106 relays control signals transmitted from the DMP 108 to the DMR 110 or the DMS 102, streaming signals transmitted from the DMS 102 to the DMP 108, and the like. In addition, when the user accesses the DMS 102 using the DMC 104 and selects and plays back a content list, the AP 106 transmits a control signal, which is transmitted from the DMC 104 to the DMS 102, DMS ( In operation 102, the DMC 104 may perform a relay such as a streaming signal transmitted to the DMR 110.

At this time, the DMR 110 plays a role of playing the content selected by the DMP 108 or the DMC 104. The DMP 108 may include a DMR. In this case, the DMR 110 may receive and output the converted file converted by the DMS 102 in a streaming form. Meanwhile, the DMR 110 may output a list of various contents owned by the DMS 102 according to the control of the DMC 104. The DMR 110 may be a TV receiver, a projector, or the like.

FIG. 2 is a diagram illustrating a digital living network alliance (DLNA) system according to another embodiment of the present invention, and FIG. 3 is a diagram showing a media file provided by a DMS.

Referring to the drawings, a DLNA according to another embodiment of the present invention may include a first DMP 202 that may be provided as a first AV device, a DMS 204 that may be provided as a personal computer, and a second AV device. May include a second DMP 206.

That is, according to another embodiment of the present invention, a DLNA system includes a DMS 204 for providing digital media content and a plurality of digital media player (DMP) for playing digital media content provided through the DMS 204. ) 202 and 206, and the DMS 204 and the DMP 202 and 206 communicate by wire / wireless.

In particular, when wired, the DMS 204 and the DMPs 202 and 206 communicate with each other via IEEE 1394 or Ethernet, and when the radio is connected, the DMS 204 and the DMPs 202 and 206 are connected with Bluetooth (BT), It is desirable to perform communication via IEEE 802.11 or Ultra Wide Band (UWB). In this case, the DMS 204 may serve as a home gateway in the home network, and the DMPs 202 and 206 may include a control point (CP) function.

The DLNA system enables sharing of digital media content among various devices connected to the DLNA network. For example, the AV content stored in the DMS 204 as shown in FIG. 3 can be freely reproduced in the first DMP 202 or the second DMP 206.

4 is a block diagram showing the configuration of a digital media player according to an embodiment of the present invention.

Referring to the drawings, a digital media player according to an embodiment of the present invention includes a decoding unit 402, a storage medium 404, an input unit 406, a control unit 408, an OSD (On Screen Display) generation unit 410 And a buffer 412 and a receiver 414.

The digital media playback apparatus according to the present invention may be provided as a broadcast recording apparatus such as a personal video recorder (PVR). It is difficult for a user to watch a broadcast program in time, or as more broadcast channels such as over-the-air broadcast, cable broadcast, and satellite broadcast are seen, it is easy to miss a desired broadcast program while watching another broadcast channel in front of the TV. At this time, the scheduled recording is set in advance for a desired broadcast program using a PVR, so that the PVR automatically records the broadcast program at the broadcast time of the broadcast program, and then the recorded broadcast program is recorded when the time permits. You can watch.

That is, the digital media player according to the present invention, which may be provided as a PVR, processes a received broadcast signal or broadcast program or video data stored in the storage medium 404 into an image signal and an audio signal and outputs the same to an external display device. Playback unit, that is, the decoding unit 402, a recording unit that converts the received broadcast signal into a format suitable for a storage medium and records the recording unit, that is, an encoding unit (not shown), a broadcast program or media (video, audio, etc.) file data. A hard disk to be stored, a recordable optical disc such as a CD or a DVD, a storage medium such as a flash memory, a 404, an OSD (On Screen Display) generator 410 to generate a user interface screen, and an operation command signal by a user's operation. Including an input unit 406 for receiving an input, a buffer 412 for temporarily storing external data received by the receiving unit 414 via a network, and a decoding unit / encoding unit W reproducing apparatus includes a control unit 408 for controlling the whole, a memory (not shown) and a tuner (not shown) to tune into a broadcasting signal that stores various kinds of data may further include.

The control unit 408 obtains the reproduction speed of the file currently being played back from the decoding unit 402, and obtains the transmission speed of the file transmitted through the network from the receiving unit 141. The generation unit 410 displays a playback speed, a transmission speed, and an error response menu on the screen. When one of the items included in the error response menu is selected through the input unit 406, the selected error response item is displayed. Perform a corresponding error response operation.

In this case, when a playback item is buffered in a storage medium and selected by the user among the error response menus, the controller 408 buffers the data transmitted through the network to the storage medium 404 by a predetermined size and then decodes the decoding unit 402. Can be played through. Here, the storage medium may be provided as a hard disk drive (HDD).

In addition, the control unit 408 calculates an average of bitrates obtained from the decoding unit 402 which decodes a file transmitted through a network to obtain a reproduction speed, and from a file transfer start time to a display time point. The transmission rate can be obtained by calculating the average of the bitrates.

In addition, the controller 408 may monitor the occurrence of the buffer underrun, and if the occurrence of the buffer underrun exceeds the set number of times, the controller 408 may display a reproduction speed, a transfer speed, and an error response menu on the screen.

On the other hand, the controller 408 calculates and displays the buffering time based on the transmission speed and the playback speed when the playback item is selected after buffering the storage medium in the error response menu, and performs buffering for the required time. The decoded data can be decoded and played back. In this case, the controller 408 may display the playback start selection screen at the playable time point, and may select whether to start playback at the time point selected by the user.

5 is a flowchart illustrating a control method of a digital media player according to an embodiment of the present invention.

Referring to the figure, the digital media reproducing apparatus according to the present invention can obtain the reproduction speed of the file currently being reproduced from the decoding unit (S502). At this time, the digital media reproducing apparatus waits until a predetermined amount or more of data that can be decoded is transmitted through a network and temporarily stored in a buffer. The reproduction speed can be obtained by obtaining the average by calculating the average.

In operation S504, the digital media reproducing apparatus may check a transmission speed of a file transmitted through a network. In this case, the digital media reproducing apparatus may obtain a transmission rate by calculating an average of bitrates from a file transfer start time to a display time point, and data such as a header of a packet may be excluded from the calculation of the bit rate.

In addition, when the playback speed is larger than the transmission speed, the digital media playback apparatus may display the corresponding information, that is, the playback speed, transmission speed, and error correspondence menu on the screen (S506).

In addition, the digital media reproducing apparatus may receive error response operation information from a user in operation S508 and perform a corresponding error response operation in operation S510. That is, when one of the items included in the error response menu is selected, the digital media reproducing apparatus performs an error response operation corresponding to the selected error response item.

In this case, when the playback item is buffered in the storage medium among the error response menus is selected by the user, the digital media player may buffer the data transmitted through the network by a predetermined size and then play the data through the decoding unit. Here, the storage medium may be provided as a hard disk drive (HDD). Meanwhile, the user may recognize a situation in which the playback speed is greater than the transmission speed through the screen, and copy the entire remote file to the storage medium to play back.

Meanwhile, the digital media reproducing apparatus may monitor the occurrence of the buffer underrun and display the reproduction speed, the transmission speed, and the error response menu on the screen when the occurrence of the buffer underrun exceeds the set number of times.

On the other hand, the digital media reproducing apparatus calculates and displays the buffering time based on the transmission speed and the playback speed, buffers the required time, and buffers the data when the playback item is selected after buffering the storage medium in the error response menu. Can be decoded and played. In this case, the digital media reproducing apparatus may display a play start selection screen at a playable time point, so that the user may select either play start or buffering execution at a time selected by the user.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 illustrates a Digital Living Network Alliance (DLNA) system according to an embodiment of the present invention.

2 illustrates a Digital Living Network Alliance (DLNA) system according to another embodiment of the present invention.

3 is a diagram illustrating a media file provided by a DMS.

4 is a block diagram showing a configuration of a digital media playback apparatus according to an embodiment of the present invention.

5 is a flowchart illustrating a control method of a digital media player according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

402: decoding unit 404: storage medium

406: input unit 408: control unit

410: OSD generator 412: Buffer

Claims (8)

Obtaining a reproduction speed of a file currently being reproduced from the decoding unit; Obtaining a transmission rate of a file transmitted over a network; If the reproduction speed is greater than the transmission speed, displaying the reproduction speed, transmission speed, and an error response menu on a screen; And And performing an error correspondence operation corresponding to the selected error correspondence item when any one item included in the error correspondence menu is selected. The method of claim 1, In the performing of the error response operation, when a playback item is selected after buffering the storage medium in the error response menu, the data transmitted through the network to the storage medium is buffered by a predetermined size and then played. Control method. The method of claim 2, The storage medium is a hard disk drive (HDD), characterized in that the control method of the digital media playback device. The method of claim 1, The obtaining of the playback speed may include obtaining a playback speed by calculating an average of bitrates obtained from a decoding unit that performs decoding of a file transmitted through a network. The method of claim 1, The obtaining of the transmission rate may include obtaining a transmission rate by calculating an average of bit rates from a file transfer start time to a display time point. The method of claim 1, The displaying step may include monitoring a buffer underrun occurrence, and when the buffer underrun occurrence exceeds a predetermined number of times, displaying the playback speed, transmission speed, and an error response menu on a screen. Control method. The method of claim 1, In the performing of the error response operation, when a playback item is selected after buffering the storage medium in the error response menu, Calculating and displaying buffering time based on the transmission rate and the reproduction rate; Performing buffering for the time required; Decoding and playing the buffered data. The method of claim 7, wherein And after the buffering step, displaying a playback start selection screen at a playable time point.

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