JP4991414B2 - Digital broadcast receiving system - Google Patents

Description

  The present invention relates to a digital broadcast receiving system, and more particularly to a tuner release technique when a reservation operation is performed by linking a digital broadcast receiving apparatus and a recording / reproducing apparatus in accordance with the HDMI standard.

  In recent years, with the increase in digital AV equipment, AV equipment having an HDMI function capable of transmitting an audio signal in a gap between video signals has been manufactured and sold. Since HDMI is digital transmission, signal degradation does not occur. In addition, bidirectional communication such as preventing illegal copying by reading the information of the connected device, matching the output format, and encrypting and transmitting it is possible. There is an advantage that it is possible (see, for example, Non-Patent Document 1).

  Further, by connecting the digital broadcast receiving apparatus and the digital broadcast recording / reproducing apparatus with HDMI and performing two-way communication between them, the digital broadcast recording / reproducing apparatus can be connected to, for example, a remote control device on the digital broadcast receiving apparatus side. Device cooperation such as control can be performed.

"High-Definition Multimedia Interface Specification Version 1.1 May 20,2004", May 20, 2004, page CEC-21 to page CEC-36 "CEC13 CEC Features Description", URL: http://www.hdmi.org/ download / HDMI_Specification_1.1.pdf

  When the above technique is used, for example, a recording reservation in the digital broadcast recording / reproducing apparatus can be performed using a remote control device on the digital broadcast receiving apparatus side. FIG. 15 is a chart showing an example of device cooperation using HDMI. As shown in FIG. 15A, in either case 1 or 2, when a recording reservation is made in a digital broadcast recording / reproducing apparatus using a remote control device on the digital broadcast receiving apparatus side through device cooperation using HDMI. For example, the reservation execution flag is changed from “idle” to “execution” 25 seconds before the start time of the scheduled recording, and even after the program end time is detected, the digital broadcast receiver side selects it. The station cannot be made. The reason is that it is necessary to acquire program information such as a change in program time using a tuner on the digital broadcast receiving apparatus side. Then, when the recording process based on the actual reservation is completed, the reservation execution flag is changed from “execution in progress” to “idle”, and channel selection on the digital broadcast receiving apparatus side becomes possible.

  Further details will be described. FIG. 16 is a diagram illustrating an example of processing based on a termer 25 seconds before the reservation start time. In step S101, a timer handler (process) 25 seconds before the reservation start time is started, and in step S102, the reservation execution flag is set to “executing”. In step S103, the reservation start time change flag is set to “no change”. In step S104, the reservation start flag is set to “not yet”. In step S105, a reservation channel is selected, and in step S106, a timer 10 seconds before the reservation start time is set 10 seconds before the reservation start time (so that the timer works).

  Next, the process proceeds to the processing of FIG. 17, the timer handler 2 10 seconds before the reservation start time is started, and it is determined whether or not the reservation start time change flag is “changed”. If there is a change (YES), the process proceeds to step S113, the reservation execution flag is set to "idle", the reservation data valid flag is set to "invalid" in step S114, and the process is terminated (step S115). This cancels the reservation.

  If “NO” in the step S112, the process proceeds to a step S116, the reservation start completed flag is set to “completed”, and a recording command is transmitted to the recording device in a step S117. Next, in step S118, it is determined whether or not the program time length on the reservation data is a valid value. If the program time length is not a valid value (NO), the process proceeds to step S119, and the reservation end timer 48 hours after the program start time on the reservation data. Is set, and the process ends (step S120).

  If YES in step S118, the process proceeds to step S121, the program end time is calculated using the program start time on the reservation data and the program time length on the reservation data, the reservation end timer is set at the program end time, In step S122, the process ends.

  Next, in the reserved program EIT process, when the reservation start flag is not “not yet”, the reservation end time determination process is performed. FIG. 18 is a diagram showing the flow of the process. As shown in FIG. 18, in the reservation end time determination process in step 131, it is determined in step S132 whether the program start time on the EIT is a valid value. If it is not valid (NO), the process proceeds to step S133 and the process is terminated. If it is valid (YES), the process proceeds to step S134, where the program start time on the EIT and the program time length on the EIT are set as the program start time on the reservation data and the program time length on the reservation data, respectively. Overwrite to.

  Next, in step S135, it is determined whether or not the program time length on the reservation data is a valid value. If NO, the process proceeds to step S136, and the reservation end timer is reset, for example, 48 hours after the program start time on the reservation data. The process is terminated (step S137).

  On the other hand, if YES, the process proceeds to step S138, the program end time is calculated using the program start time on the reservation data and the program time length on the reservation data, and the reservation end timer is reset at the program end time. Is finished (step S139).

  FIG. 19 is a diagram showing the flow of the final user channel selection process (S141). When the user channel selection process is detected in step S142, the process proceeds to step S143, and whether or not the reservation execution flag is being executed. If NO, a desired channel selection is performed in step S144, and if YES, for example, a warning that “reservation is in progress and cannot be selected” is issued in step S145.

  As described above, once a reservation recording instruction is given on the digital broadcast receiving device side, the tuner on the digital broadcast receiving device side is not released until another recording program based on the recording reservation in the digital broadcast recording / playback device is completed. There was a problem that it was not possible to respond to requests such as viewing.

  An object of the present invention is to open the tuner on the digital broadcast receiving apparatus side early.

  According to one aspect of the present invention, a digital broadcast receiving apparatus having a first digital broadcast receiving unit including a first tuner for digital broadcasting, and a second digital broadcast receiving apparatus that is HDMI-connected to the digital broadcast receiving apparatus. A digital broadcast recording device having a second digital broadcast receiving unit including a tuner and a digital broadcast recording unit, and recording the digital broadcast according to a command from the digital broadcast receiving device via the HDMI connection A digital broadcast recording device, and even during a period in which the channel selection operation is prohibited in the digital broadcast receiving device because the reservation process registered in the digital broadcast recording device is being executed, A digital broadcast receiving system is provided in which the channel selection operation is permitted after the end time of the reservation process is determined.

  Reservation processing registered in the digital broadcast recording apparatus is being executed, and it is necessary to acquire program information such as a change in program time using the first tuner of the digital broadcast receiving apparatus. Even during the period in which the channel selection operation of the first tuner is prohibited, the first tuner on the digital broadcast receiving apparatus side is released from the program information acquisition process after the program time is determined. To do. By opening the first tuner early, viewing using the first tuner becomes free.

  It is preferable that the digital broadcast receiving apparatus includes a reserved channel selection permission flag granting unit that grants a reserved channel selection permission flag that permits the channel selection operation after the reservation processing end time is determined. The digital broadcast receiving apparatus selects a reserved program from the digital broadcast recording apparatus and starts recording at a timing that is a first time before the reservation start time registered in the digital broadcast recording apparatus. It is preferable to send a command for When the first time is later than the acquisition time of the end time information of the reserved program, it is preferable that the channel selection operation is permitted in the first time. When the first time is before the acquisition time of the end time information of the reserved program, it is preferable that the channel selection operation is permitted at the acquisition time.

  The digital broadcast receiving device causes the digital broadcast recording device to stop recording the reserved program at a timing before or after the reservation end time or a second time before the reservation end time. It is preferable to send a command for this purpose. Recording can be stopped before, at or after the end time. At this time, fine adjustment can be made according to the characteristics of the hardware.

The present invention can be configured individually for each device.
The methods described in the flowcharts below and programs for causing a computer to execute these methods also fall within the scope of the present invention.

  According to the present invention, even before the scheduled recording process on the recording device side ends, the tuner on the television receiving device side is opened, and a program different from the program being recorded can be viewed on the television receiving device side. Can do. Thus, even when the television receiver is not a double tuner, other programs can be viewed during the reserved recording process, and there is an advantage that the degree of freedom of the user is increased.

  In this specification, “EIT” is an abbreviation for Event Information Table (event information table). The EIT describes information related to the program such as the broadcast program name, broadcast date and time, and program content. In digital terrestrial television broadcasting, we operate H-EIT for display on fixed receivers, M-EIT for display on mobile receivers, and L-EIT for display on partial receivers. is doing. EIP present (EIT p) is EIT current program information (p), and EIP following (EIT f) is EIT next program information (f).

  Hereinafter, a digital broadcast receiving technique according to an embodiment of the present invention will be described with reference to the drawings. 1 to 3 are diagrams showing an outline of a digital broadcast receiving system according to the present embodiment. As shown in FIG. 3, the system according to the present embodiment is based on the HDMI standard, for example, a digital television receiver A and a DVD (HDD) recorder B, and HDMI cables that connect these via terminals 5 and 55. And have. The control signal (CEC) flows in both directions. As shown below, both devices each have a tuner.

  As shown in FIG. 1, the digital broadcast receiving apparatus A includes an antenna 1, a digital broadcast receiving unit 3 including a digital broadcast tuner, an HDMI interface unit 5, an HDMI signal processing unit 7, a decoder 11, Remote control light receiving unit 15, audio signal processing unit 25 for processing audio signals, speaker 21 for outputting audio based on the processed audio signals, video signal processing unit 27 for processing video signals, and post-processing A display 23 for outputting video based on the video signal, a control unit (CPU) 17 for controlling each of these functional blocks through a bus line, a storage unit 18 for storing a program for performing the following processing, and other information, have.

  As shown in FIG. 2, the DVD (HDD) recorder (recording / reproducing apparatus) B includes an antenna 41, a digital tuner 43, an HDMI signal processing unit 45, a control unit 47, a remote control light receiving unit 51, and a storage unit ( HDD) 53, an HDMI interface unit 55, an electronic program guide acquisition unit 57, an optical disk drive unit 63 such as a DVD, and an operation unit 67. Each can be operated by a corresponding remote control device.

  FIG. 4 is a diagram showing a system management flag (A), a reservation data configuration example (B), and a reservation management flag (C) used in the system according to the present embodiment. As shown in FIG. 4A, the system management flag includes a reservation data valid flag indicating whether reservation data is valid, a reservation execution flag indicating whether reservation is being executed, Is provided.

  In the reservation data, an original network ID, a service ID such as a channel number, a program start time (date and time), and a program time length are provided. The program start time (date and time) and the program time length indicate a valid value or a value indicating that the program is undecided.

  The reservation management flag (C) includes a reservation channel selection permission flag, a reservation start time change flag, and a reservation start completed flag. The present embodiment is characterized in that a reserved channel selection permission flag is newly provided. The reserved channel selection permission flag is used to allow the user to select a channel regardless of the period during which the user's channel selection operation is prohibited because the reservation registered by the user is being executed. It is a flag provided in.

  Next, with reference to FIG. 5, the flow of processing along with the passage of time relating to reserved recording will be described. Case 1 and case 2 will be described. Case 1 is a case where an EIT in which the scheduled recording end time is determined from a time point 25 seconds before the reservation start time to a time point 10 seconds before the reservation start time is acquired.

  When the EIT with the scheduled recording end time fixed is acquired, for example, 10 seconds before the reservation start, a process of changing the reserved channel selection permission flag, which has been prohibited from tuning until then, to channel selection permission is performed. Thus, even if the reserved channel selection permission flag is after the timing when the reservation channel selection permission flag is changed to channel selection permission without waiting for the reservation recording to end, the user can change the tuner of the digital broadcast receiving apparatus A for the reservation recording. By releasing from the program information acquisition process, viewing of another program is permitted. In the case 2, the time when the reserved channel selection permission flag can be changed to the channel selection permission is the time when the EIT whose end time is fixed can be acquired. In any case, it is possible to view a channel independent of the reserved recording on the television receiving apparatus side without waiting for the end time of the reserved recording process.

  Next, the flow of processing viewed from the television receiver side in the system according to the present embodiment will be described in comparison with the above example. As shown in FIG. 6, when the system startup process is started (step S1), the reservation execution flag is set to “idle” in step S2, and the reservation data valid flag is set to “invalid” in step S3. Then, the process ends (step S4).

  Next, as shown in FIG. 7, the user reservation registration process is started (step S5). In step S6, it is determined whether or not the reservation data valid flag is “valid”. If it is valid (YES), it waits. If it becomes invalid (NO), it waits for user reservation registration in step S7. When reservation registration is made, reservation data is created in step S8 and the reservation data valid flag is set to "valid". . Next, in step S9, a timer 25 seconds before the reservation start time is set 25 seconds before the reservation start time (so that the timer works).

  Next, as shown in FIG. 8, the processing of the timer handler 25 seconds before the reservation start time is started (step S11). In step S12, the reservation execution flag is set to “executing”. In step S13, the reserved channel selection permission flag is set to “channel selection prohibited”, and channel selection by the tuner on the television receiver side is prohibited. Next, in step S14, the reservation start time change flag is set to "no change", and in step S15, the reservation start flag is set to "not yet". In step S16, a reserved channel is selected, and in step S17, a timer 10 seconds before the reservation start time is set 10 seconds before the reservation start time (so that the timer works), and the process is terminated (step S18).

  Next, as shown in FIG. 9, the processing of the timer handler 10 seconds before the reservation start time is started in step S21, and in step S22, it is determined whether or not the reservation start time change flag is “changed”. If there is a change (YES), it means that there has been a change, so the process proceeds to step S23, the reservation execution flag is set to "idle", and in step S24, the reservation data valid flag is set to "invalid" The process ends (step S25). As a result, it is possible to prevent wasteful consumption of the recording medium by starting the recording even though the start time of the program is changed.

  On the other hand, in the case of NO, since there is no change, the reservation start flag is set to “completed” in step S26, and a recording command is transmitted to the recorder (recording device) in step S27. Next, in step S28, it is determined whether or not the program time length on the reservation data is a valid value. If it is not an effective value (NO), the process proceeds to step S29, and a reservation end timer is set, for example, 48 hours (long time) after the program start time on the reservation data, and the process ends (step S30).

  On the other hand, in the case of YES, in step S31, the program end time is calculated using the program start time on the reservation data and the program time length on the reservation data, and the program end time is set so that the timer works. ) A reservation end timer is set, and in step S32, the reserved channel selection permission flag is set to “channel selection permission”, and the process ends (step S33). As a result, it is possible to open another tuner on the television receiver side and view another program even if the recording device is performing reserved recording.

  When the time when the reservation end timer works is reached, as shown in FIG. 10, first, the reservation end timer handler process is started (step S41), and a recording stop command is transmitted to the recording device in step S42. Next, in step S43, the reservation execution flag is set to “idle”, the reservation data valid flag is set to “invalid” in step S44, and the process ends (step S45). As a result, the recording process can be canceled.

  When EIT [present] (EITp) is acquired, as shown in FIG. 11A, the EITp acquisition handler process is started in step S51, and whether or not the EIT related to the reserved program is determined in step S52. judge. If NO, the process ends (step S54), and if YES, the process proceeds to a reserved program EIT processing subroutine described later.

  When EIT [following] (EITf) is acquired, as shown in FIG. 11B, EITf acquisition handler processing is started in step S55, and in step S56, it is determined whether or not the EIT is related to a reserved program. To do. If NO, the process ends (step S58). If YES, the process proceeds to a reserved program EIT processing subroutine described later in step S57.

  FIG. 12 is a flowchart showing the flow of the above-described reserved program EIT processing subroutine. In step S61 shown in FIG. 12, it is determined in step S62 whether or not the reservation execution flag is “in execution”. If NO, the process ends (step S63). If YES, it is determined in step S64 whether the reservation start flag is “not yet”. In the case of NO, the process proceeds to the reservation end time determination process subroutine process in step S65, and the process ends (step S66).

  If YES, the process proceeds to step S67, and it is determined whether or not the program start time on the EIT is a valid value and is the same as the program start time on the reservation data. In the case of NO, it is estimated that the program start time has been changed, and in step S68, the reservation start time change flag is set to “changed”. On the other hand, if YES, the reservation start time change flag is set to “no change” in step S69, and in either case, the program time length on the EIT is overwritten with the program time length on the reservation data in step S70. Thus, the EIT information is reflected and the process is terminated (step S71).

  FIG. 13 is a flowchart showing the process flow of the above-described reservation end time determination process subroutine. In step S81, a reservation end time determination process subroutine process is started. In step S82, it is determined whether or not the program start time on the EIT is a valid value. If NO, the process ends (step S83). In the case of YES, it is determined whether or not the program time length on the EIT is a valid value (step S84), and the program start time on the EIT and the program time length on the EIT are respectively set in the program on the reservation data. Overwrite the start time and the program time length on the reservation data (step 86), and then calculate the program end time using the program start time on the reservation data and the program time length on the reservation data in step S87. Then, the reservation end timer is reset at the program end time (so that the timer works), and in step S88, the reservation channel selection permission flag is set to “channel selection permission”, and the process ends (step S89). As a result, viewing by the tuner on the television receiver side becomes possible.

  As shown in FIG. 14, when the user channel selection process is started in the above state (step S91), a user channel selection operation is detected in step S92. In step S93, is the reservation execution flag “execution in progress”? If it is NO, channel selection is performed in step S95. If YES, the process proceeds to step S94 to determine whether or not the reserved channel selection permission flag is “channel selection permission”. If YES, the process similarly proceeds to the channel selection process of step S94. In the case of NO, for example, the user is notified by a display indicating that reservation is being executed and channel selection is not possible.

  With the above processing, even before the scheduled recording process on the recording device side ends, the tuner on the television receiver side is released, and a program different from the program being recorded can be viewed on the television receiver side. it can. Thus, even when the television receiver is not a double tuner, other programs can be viewed during the reserved recording process, and there is an advantage that the degree of freedom of the user is increased.

  Furthermore, if a time change is detected in the middle, the reservation end time is set at this point and the tuner is opened, so that it is possible to prevent the recording from being ended before or after the program end time. And there is an advantage that other programs can be viewed and the degree of freedom of the user is increased.

  In the above example, the example in which the tuner on the television receiving device side is opened has been described. However, the tuner on the recording / reproducing device side can be opened by replacing the television receiving device and the recording / reproducing device. .

  The present invention can be used in a television receiving system including a recording device and a television receiving device.

It is a figure which shows the example of 1 structure of the digital broadcast receiver by one embodiment of this invention. It is a figure which shows the example of 1 structure of a DVD (HDD) recorder (recording / reproducing apparatus). It is a figure which shows the system configuration example by this Embodiment. It is a figure which shows the system management flag (A), reservation data structural example (B), and reservation management flag (C) which are used in the system by this Embodiment. It is a figure which shows two cases of the flow of a process along the time passage regarding a time-programmed video recording. It is a figure which shows the process at the time of system starting seen from the television receiver side in the system by this Embodiment. It is a flowchart figure which shows the flow of a user reservation registration process. It is a flowchart figure which shows the flow of a process of the timer handler 25 seconds before reservation start time. It is a flowchart figure which shows the flow of a process of the timer handler 10 seconds before reservation start time. It is a figure which shows the flow of a reservation end timer handler process. FIG. 11A is a flowchart showing a handler process at the time of EITp acquisition, and FIG. 11B is a flowchart showing a flow of the handler process at the time of EITf acquisition. It is a flowchart figure which shows the flow of a reserved program EIT process subroutine process. It is a flowchart figure which shows the flow of a reservation end time determination process subroutine process. It is a flowchart figure which shows the flow of the final user channel selection process. It is a chart figure which shows the example of apparatus cooperation using normal HDMI. It is a figure which shows an example of the process based on the termer 25 seconds before the normal reservation start time. It is a flowchart figure which shows the flow of a process of the timer handler 10 seconds before a normal reservation start time. It is a flowchart figure which shows the flow of the reservation end time determination process performed when the reservation start completed flag is not "not yet" in normal reservation program EIT processing. It is a flowchart figure which shows the flow of a normal final user channel selection process.

Explanation of symbols

A ... Digital broadcast receiving device, 1 ... antenna, 3 ... digital broadcast receiving unit, 5 ... HDMI interface unit, 7 ... HDMI signal processing unit, 11 ... decoder, 15 ... remote control light receiving unit, 17 ... control unit (CPU), 18 ... Storage unit 23 ... Display, 25 ... Audio signal processing unit, 27 ... Video signal processing unit.

Claims (9)

A digital broadcast receiving apparatus having a first digital broadcast receiving unit including a first tuner for digital broadcasting, and a second digital broadcast connected to the digital broadcast receiving apparatus via HDMI and including a second tuner for digital broadcasting A digital broadcast recording device having a receiving unit and a digital broadcast recording unit, wherein the digital broadcast recording device records a digital broadcast according to a command from the digital broadcast receiving device via the HDMI connection. ,
Even when the channel selection operation in the digital broadcast receiving device is prohibited because the reservation processing registered in the digital broadcast recording device is being executed, the reservation processing end time is determined and Allow tuning operation ,
The digital broadcast receiving apparatus selects a reserved program from the digital broadcast recording apparatus and starts recording at a timing that is a first time before the reservation start time registered in the digital broadcast recording apparatus. Send commands for and
The digital broadcast receiving system, wherein the channel selection operation is permitted at the first time when the first time is after the acquisition time of the end time information of the reserved program . A digital broadcast receiving apparatus having a first digital broadcast receiving unit including a first tuner for digital broadcasting, and a second digital broadcast connected to the digital broadcast receiving apparatus via HDMI and including a second tuner for digital broadcasting A digital broadcast recording device having a receiving unit and a digital broadcast recording unit, wherein the digital broadcast recording device records a digital broadcast according to a command from the digital broadcast receiving device via the HDMI connection. ,
Even when the channel selection operation in the digital broadcast receiving device is prohibited because the reservation processing registered in the digital broadcast recording device is being executed, the reservation processing end time is determined and Allow tuning operation,
The digital broadcast receiving apparatus selects a reserved program from the digital broadcast recording apparatus and starts recording at a timing that is a first time before the reservation start time registered in the digital broadcast recording apparatus. Send commands for and
The first time, in the case before the acquisition time of the end time information of the reserved program, features and to Lud digital broadcast receiving system to allow the tuning operation at the acquisition time. The digital broadcast receiving apparatus includes:
3. The digital broadcasting according to claim 1, further comprising: a reserved channel selection permission flag granting unit that grants a reserved channel selection permission flag that permits the channel selection operation after the reservation processing end time is determined. Receiving system. The digital broadcast receiving apparatus includes:
A command for stopping recording of the reserved program is transmitted to the digital broadcast recording apparatus at a timing before or after the reservation end time or a second time before the reservation end time. The digital broadcast receiving system according to any one of claims 1 to 3, wherein the system is a digital broadcast receiving system. A digital broadcast receiving apparatus having a first digital broadcast receiving unit including a first tuner for digital broadcasting, and a second digital broadcast connected to the digital broadcast receiving apparatus via HDMI and including a second tuner for digital broadcasting A digital broadcast recording apparatus having a receiving section and a digital broadcast recording section, wherein the digital broadcast recording apparatus records a digital broadcast according to a command from the digital broadcast receiving apparatus via the HDMI connection. A digital broadcast receiving apparatus in a broadcast receiving system,
Even if the channel selection operation in the digital broadcast receiving device is prohibited because the reservation processing registered in the digital broadcast recording device is being executed, the reservation processing end time is determined and Allow tuning operation ,
The digital broadcast receiving apparatus selects a reserved program from the digital broadcast recording apparatus and starts recording at a timing that is a first time before the reservation start time registered in the digital broadcast recording apparatus. Send commands for and
The digital broadcast receiving apparatus, wherein the channel selection operation is permitted at the first time when the first time is later than the acquisition time of the end time information of the reserved program . 6. The digital broadcast receiving system device according to claim 5 , wherein the channel selection operation is permitted at the acquisition time when the first time is before the acquisition time of the end time information of the reserved program. . The digital broadcast receiving apparatus includes:
7. The digital broadcasting according to claim 5 , further comprising: a reserved channel selection permission flag granting unit that grants a reserved channel selection permission flag for permitting the channel selection operation after the end time of the reservation process is determined. Receiver device. The digital broadcast receiving apparatus includes:
A command for stopping recording of the reserved program is transmitted to the digital broadcast recording apparatus at a timing before or after the reservation end time or a second time before the reservation end time. The digital broadcast receiver according to claim 5 , wherein the digital broadcast receiver is a digital broadcast receiver. A digital broadcast receiving apparatus having a first digital broadcast receiving unit including a first tuner for digital broadcasting, and a second digital broadcast connected to the digital broadcast receiving apparatus via HDMI and including a second tuner for digital broadcasting A digital broadcast recording apparatus having a receiving section and a digital broadcast recording section, wherein the digital broadcast recording apparatus records a digital broadcast according to a command from the digital broadcast receiving apparatus via the HDMI connection. A digital broadcast recording apparatus in a broadcast receiving system,
Even when the channel selection operation in the digital broadcast receiving device is prohibited because the reservation processing registered in the digital broadcast recording device is being executed, the reservation processing end time is determined and Tuning operation is allowed ,
A command for selecting a reserved program and starting recording is sent to the digital broadcast recording device at a timing that is a first time before the reservation start time registered in the digital broadcast recording device,
The digital broadcast recording apparatus, wherein the channel selection operation is permitted at the first time when the first time is after the acquisition time of the end time information of the reserved program .

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