JP2010063025A - Information recording/reproducing device and display method of same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recording/reproducing device and a display method of the same for notifying a user of a recording failure factor accurately if a video recording operation, as reservation recording during absence of the user, goes wrong. <P>SOLUTION: The information recording/reproducing device, in which digital broadcasting is received through a network and the broadcasting signal is recorded on a memory medium, includes: a decoding means for measuring a receive bit rate of data for every fixed period while recording the digital broadcasting from the network; and a display means for displaying a low-speed value out of the receive bit rates measured by the decoding means if the recording operation of the broadcasting signal goes wrong, and continuing to display it until its display is eliminated by user operation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an information recording / reproducing apparatus, and more particularly to an information recording / reproducing apparatus and a display method thereof for notifying a user of the cause of a failure when the recording process fails when a digital broadcast is recorded on a storage medium. It is.

2. Description of the Related Art In recent years, terminal devices such as a plurality of computers have been connected by a network mainly in the home using the Internet. Under such circumstances, for example, the set-top box receives content data distributed from a distribution server via a network and outputs it on a TV receiver. Some set-top boxes measure the bit rate when content data is received, and display the measurement result together with the content displayed on the screen of the TV receiver based on the content data. Furthermore, an instruction for a result displayed on the screen from the user, for example, whether to continue viewing or an instruction to select a distribution bit rate is input and this instruction is transmitted to the distribution server. Yes.
JP 2004-289628 A (paragraph numbers 0043 to 0045, FIGS. 3 to 5)

  According to Patent Document 1, when stream data is received from a set-top box connected via a network and reproduced and displayed, the user is inquired about whether to stop viewing when the transfer bit rate is low. However, in the case of a recording apparatus, the recording operation is usually performed in the absence of a user called “reserved recording”. In order to notify the user that recording has failed due to insufficient bit rate when the user is absent, it is necessary to leave the screen display until the user gives an instruction.

  In this patent document 1, there is no description about a response at the time of reception failure when it is not on the spot like reservation recording and it is not possible to determine whether or not to continue recording due to a decrease in communication speed.

  Accordingly, an object of the present invention is made to solve the above-described problem, and a recording / reproducing apparatus that accurately notifies a user of a recording failure factor when a recording operation in the absence of a user called reservation recording fails. And a display method thereof.

  In order to solve the above-described problems, the present invention records a digital broadcast from the network in an information recording / reproducing apparatus that receives the digital broadcast via a network and records the broadcast signal on a storage medium. In the meantime, a decoding means for measuring the reception bit rate of the data at regular intervals, and when the broadcast signal recording process fails, a value that is a low speed among the reception bit rates measured by the decoding means is set. And display means for displaying the display until the display is erased by a user operation.

  In order to solve the above problems, the present invention provides a display method for an information recording / reproducing apparatus for receiving a digital broadcast via a network and recording the broadcast signal in a storage medium.

  While recording the digital broadcast from the network, the data reception bit rate is measured at regular intervals, and when the broadcast signal recording process fails, the measured reception bit rate A low-speed value is displayed and the display is continuously displayed until it is erased by a user operation.

  According to the present invention, in a recording / reproducing apparatus that receives and records stream data from a network, the recording failure factor due to a problem that the user does not know that the network transfer rate is insufficient is accurately notified to the user, This has the effect of displaying a message prompting the network section to solve the problem. Further, notifying that the recording failure is not a failure of the recording / reproducing apparatus has an effect of giving the user a sense of security.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram of an apparatus for recording and reproducing digital broadcasts on an HDD (hard disk drive).
The digital broadcast signal received by the digital tuner 101 is converted into a partial TS (transport stream) format in which only the service selected by the partial processing unit 102 is multiplexed, and the stream processing unit 103 copies the copy prohibition information. After being subjected to local encryption processing based on the above, it is recorded on the HDD 104. The content recorded in the HDD is decrypted and decoded by the decoding processing unit 105 and output to the external video display device 109 as a video / audio signal. In addition, there is a GUI processing unit 108 that is electrically connected to the HDD and displays a reception bit rate and the like described later on the screen in parallel with the decoding processing unit 105. Information to be displayed on the screen is output from the GUI processing unit 108 to the external video display device 109.

  The recording / reproducing apparatus 100 also includes a network processing unit 106, which decrypts a DTCP-IP (digital transmission content protection over internet protocol) encrypted partial TS input from the Ethernet (R) using a DTCP-IP decoding unit. Thus, the stream processing unit 103 has a function of performing local encryption and recording.

  The function of recording a partial TS from the network provided by this device is to accept moving / copying of recorded content on other recording / playback devices, or to record video signals distributed to the network by tuners that do not have a recording device. It is aimed. However, in general, the communication speed of Ethernet (R) is not guaranteed to be high speed, and when copying content that has already been recorded, it takes time to move and copy even if the communication speed is slow. However, if the other party is the tuner that retransmits the broadcast signal to the Ethernet (R) in real time, the data will overflow if the communication speed is slow, and recording will fail. However, since the user of this apparatus cannot visually confirm the state of communication, there is a problem that the cause of the failure in recording is not known and the user's complaint is caused.

  For this reason, this device measures the bit rate of data received by the network processing unit at regular intervals, displays this bit rate on the display means, displays the communication status to the user, and further fails to record. In this case, a numerical value that is the slowest bit rate measured during the recording process is displayed on the display means. Thereby, the user can grasp that recording failed because the communication speed is low.

  In a personal computer (PC), it is common to display a reception bit rate and an estimated remaining time when downloading large data. It is also known to display the download time and average bit rate after the download is complete. However, in the case of consumer devices such as video recording / playback devices, there is no point in displaying the time and bit rate when reception (downloading) is successful, and the user can be informed why the recording failed. It is important to communicate. In addition, since the signal distributed from the tuner is operated as “reserved recording” in most cases, there is a high possibility that the user is not there. For this reason, it is important to provide information in such a way that only when recording fails, the display is made to the user and the display is continued until the display is erased by the user.

  Therefore, the present invention is characterized in that when the reception process fails, the value with the lowest bit rate during the recording process is continuously displayed. In addition, you may decide to display the lowest value among the numerical values except the zero instead of the lowest. Further, for the purpose of providing information at the time of reproduction confirmation by the user, there is also provided means for displaying the bit rate during the recording process on the screen as needed.

FIG. 2 is a diagram showing a format of a stream transmitted / received by DTCP-IP.
In DTCP-IP, in order to protect a partial TS format stream to be transmitted, it is transmitted in a structure called PCP (Protected Contents Packet). In the PCP structure, a value indicating an encryption mode called E-EMI and information related to an encryption key label and Nc encryption key are described in an area called a PCP header. In addition, the size of data included in the PCP header is described as Data Length. Following this PCP header, the partial TS stream to be encrypted is encrypted and transmitted as data. The DTCP-IP decryption unit 107 receives the PCP header, obtains the encryption key of the data part, and performs decryption processing. Therefore, the DTCP-IP decoding unit 107 according to the present invention measures the reception bit rate using the reception interval of the PCP header and the value of Data Length described in the PCP header.

FIG. 3 shows a schematic procedure of PCP header processing in the DTCP-IP decoding unit.
The DTCP-IP decoding unit 107 first extracts a PCP header from the input stream and analyzes the stream (step ST1). After the analysis, if it is a PCP header (Y in step ST3), the time when this header is received and the value of Data Length described in the PCP header are recorded (step ST7). If there is a reception time recorded last time, the transfer bit rate is calculated from the value of Data Length and the reception time difference of the PCP header (step ST9). Also, an encryption key is obtained from information obtained from the PCP header, and the stream processing unit 103 performs decryption and local encryption for recording (step ST11).

If it is not a PCP header in step ST3, a partial TS is received (step ST5), and it is repeatedly checked whether it is a PCP header.
As described above, when recording a signal from a set-top box that redistributes a live broadcast to a network, it is the set-top box that fails due to a slow network transfer bit rate. That is, since the data cannot be collected via the network, the buffer memory in the set top box overflows and the connection is cut off from the set top box side. On the recording / reproducing apparatus side that is a receiver, there is no distinction as to whether the connection has been interrupted due to an overflow or because the connection has been terminated by a user operation on the set top box side.

  For this reason, when the connection is cut off from the set top box, the numerical value with the lowest transfer rate received so far is displayed on the screen as shown in FIG. This display does not disappear unless the user presses the “OK” button on the remote control. Therefore, even if a recording failure occurs due to a lack of bit rate when there is no user in scheduled recording, etc., it will continue to be displayed until the next time the user sees the GUI display of the recording / playback device. The user can be surely notified. Note that once the “OK” button is pressed, the information is transmitted to the apparatus side and the display is turned off.

  On the other hand, there is a demand that the user wants to know how much the transfer rate has been obtained even during the execution of the reception process. Therefore, as shown in FIG. 5, a mechanism for displaying the current transfer bit rate is also provided. This screen displays the current transfer bit rate along with the title length of the received title and the time received up to now.

  As described above, until now, the set-top box does not depend on the content distribution system, but the bit rate of the actual content data distributed from the distribution server is measured, and the end user can view it using the result. Although the recording / reproducing apparatus of the present invention has a function of selecting whether to continue or not, when recording fails due to a delay in communication speed, a bit rate with a slow communication speed is continuously displayed to inform the user of the cause of the recording failure. Can do.

  Further, even in an apparatus that receives and records a stream using a network such as DLNA, it has become possible to clearly indicate to the user that recording has failed due to the transfer speed.

  In addition, you may implement each embodiment suitably combining as much as possible, and the combination effect is acquired in that case. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some configuration requirements are deleted from all the configuration requirements shown in the embodiment, a configuration from which these configuration requirements are deleted can be extracted as an invention.

The block diagram of the recording / reproducing apparatus concerning embodiment of this invention. The figure shown about the format of the stream transmitted / received by DTCP-IP. The flowchart of the PCP header process in a DTCP-IP decoding part. The figure which displayed on the screen the numerical value with the lowest transfer bit rate which has been received so far. The figure which displayed on the screen the present transfer bit rate during stream data reception.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Recording / reproducing apparatus, 101 ... Tuner, 102 ... Partialization processing part, 103 ... Stream processing part, 104 ... HDD, 105 ... Decoding processing part, 106 ... Network processing part, 107 ... DTCP-IP decoding part, 108 ... GUI processing unit, 109 ... Video display device

Claims (4)

In an information recording / reproducing apparatus for receiving a digital broadcast via a network and recording the broadcast signal in a storage medium,
Decoding means for measuring the reception bit rate of data at regular intervals while recording the digital broadcast from the network;
When the broadcast signal recording process fails, a display unit that displays a low-speed value in the reception bit rate measured by the decoding unit and continues to display the display until it is erased by a user operation. An information recording / reproducing apparatus comprising:   2. The information recording / reproducing according to claim 1, wherein the decoding unit calculates the reception bit rate based on header information of the received broadcast signal when recording the broadcast signal from the network. apparatus. In a display method of an information recording / reproducing apparatus for receiving a digital broadcast via a network and recording the broadcast signal in a storage medium,
While recording the digital broadcast from the network, measure the data reception bit rate at regular intervals,
When the recording process of the broadcast signal fails, a value that is low in the measured reception bit rate is displayed, and the display is continuously displayed until it is erased by a user operation. Display method of recording / reproducing apparatus.   The display method of the information recording / reproducing apparatus according to claim 1, wherein when the broadcast signal from the network is recorded, the reception bit rate is calculated based on header information of the received broadcast signal.

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