JP2006013874A - Digital broadcast receiver including a plurality of receivers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To select tuning for control based on a determination reference with less probability of mutual operation interference between tuning for viewing and tuning for control other than viewing (energizing control, etc.). <P>SOLUTION: A digital broadcast receiver comprises a CATV transmission line receiver 9 for receiving various services such as independent broadcasting, BS digital, or a ground wave, etc.; a BS digital transmission line receiver 10 for receiving various services such as the BS digital or CS, etc.; and a ground wave transmission line receiver 11 for receiving various services of the ground wave. Tuning for viewing and tuning for control are processed by selection in one of the plurality of transmission line receivers so as to operate program viewing by the various services in parallel by control such as energizing control, etc. Concerning the processing by the selection of the tuning for control, the transmission line receiver with the least number of single services being services to be received only by the receiver is selected and set in each transmission line receiver. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a digital broadcast receiving apparatus having a plurality of receiving units for receiving services of a plurality of transmission paths, and more particularly to a channel selection apparatus for performing viewing receiving processing and control receiving processing other than viewing. .

  Conventionally, a digital broadcast receiving apparatus has a plurality of tuners, and one tuner can watch a program, and the other tuner can perform energization control for a predetermined time for receiving EMM (Entlement Management Message). Is known (see, for example, Patent Document 1). According to Patent Document 1, in order to save power and reduce time in energization control processing, energization control is executed with a tuner that is vacant during program viewing, and energization control is performed both during program viewing and when the power is turned off. When there are a plurality of instructions, they are executed simultaneously using a plurality of tuners. The tuner used here has the same configuration.

In addition, the digital broadcast receiving apparatus has two tuners, and one tuner serves as a main tuner for normal viewing, and other tuners receive digital broadcast download program data without disturbing normal viewing. For example, Patent Document 2 discloses that the program is upgraded.
JP 2002-325240 A JP2002-319871

  However, in Patent Document 1 that performs energization control of a digital broadcast receiving device when performing an EMM reception operation, for example, a receiving unit (QPSK tuner) that receives a BS, CS110 degree service on a transmission path from a satellite, a BS, In a receiver equipped with a receiving unit (QAM tuner) for receiving a CATV original service on a CATV transmission path at CS 110 degrees, if the technique described in Patent Document 1 is used, the next EMM reception operation is scheduled for the CATV original service. If the user selects the BS and uses the receiver (QAM tuner), the EMM reception operation and viewing are not compatible, and the two tuners are held. The problem arises that the work does not work effectively.

  Further, according to the above-mentioned Patent Document 2, it is disclosed that normal viewing and reception of program data can be performed at the same time. However, when there are a plurality of tuners, which tuner is selected on what basis. There is a lack of consideration for use.

  An object of the present invention is a digital broadcast receiving apparatus that can receive the same service through a plurality of transmission channels, and a tuning station for viewing and a tuning station for control other than viewing (downloading, terrestrial digital scanning, energization control, etc.) operate in conjunction It is an object of the present invention to provide a digital broadcast receiving apparatus capable of performing control channel selection based on a judgment criterion with a low probability of interference.

In order to solve the above problems, the present invention mainly adopts the following configuration.
A digital broadcast receiving apparatus comprising a respective transmission path receiving unit for receiving services of a plurality of transmission paths, and capable of receiving the same service from a plurality of transmission paths,
The channel selection for viewing and the channel selection for control are connected to the plurality of transmission path reception units so that the program viewing from the network and the control of downloading, digital scanning, energization control and the like can be performed in parallel. Channel selection processing in either of,
The channel selection process for the control channel selection is performed without being affected by the channel selection process for viewing as long as the channel selection process for viewing channel can be viewed by any receiving unit. The configuration is as follows.

A digital broadcast receiving apparatus comprising a respective transmission path receiving unit for receiving services of a plurality of transmission paths, and capable of receiving the same service from a plurality of transmission paths,
The channel selection for viewing and the channel selection for control are connected to the plurality of transmission path receiving units so that the program viewing from the network and the control of downloading, digital scanning, energization control, etc. can be performed in parallel. Channel selection processing in either of,
The channel selection process of the control channel selection is configured to select and set a transmission path receiving unit having the smallest number of independent services in each transmission path receiving unit.

  According to the present invention, in performing the tuning process for control tuning, the probability of selecting a viewing channel using the receiving unit is reduced, in other words, without being disturbed by the viewing channel. A tuning station for control can be selected.

  Embodiments according to the digital broadcast receiving apparatus of the present invention will be described below in detail with reference to the accompanying drawings.

  The configuration and operation of the embodiment according to the digital broadcast receiving apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing an outline of a configuration and functions in an embodiment according to the digital broadcast receiving apparatus of the present invention. FIG. 2 is a diagram showing a list of contents of broadcast services for each of a plurality of transmission paths, types of receiving units, receivability at a plurality of receiving units, and the like in this embodiment. FIG. 3 shows the correspondence between the contents of the broadcast service for each of the plurality of transmission paths in this embodiment and the tuning for control before execution of tuning for control (downloading, terrestrial digital scan, energization control, EPG information acquisition, etc.). FIG. FIG. 4 is a diagram showing the number of single services for each of the plurality of transmission paths in FIG.

  FIG. 5 is a diagram illustrating a correspondence relationship between the contents of the broadcast service for each of the plurality of transmission paths and the tuning for control (terrestrial digital scan, energization control, etc.) after execution of download in this embodiment. FIG. 6 is a diagram showing the number of single services for each of a plurality of transmission paths in FIG. FIG. 7 is a diagram illustrating a correspondence relationship between the contents of the broadcast service for each of the plurality of transmission paths and the tuning for control (energization control or the like) after execution of the terrestrial digital scan in the present embodiment. FIG. 8 is a diagram showing the number of independent services for each of the plurality of transmission paths in FIG.

  FIG. 9 is a diagram illustrating a correspondence relationship between the contents of the broadcast service for each of the plurality of transmission paths and the tuning for control after the energization control is performed in the present embodiment. FIG. 10 is a diagram showing the number of independent services for each of the plurality of transmission paths in FIG. FIG. 11 is a diagram showing a flow of determination processing in each of the viewing channel selection and the control channel selection according to the present embodiment.

  In FIG. 1, a digital broadcast receiver 8 of the present invention includes a CATV transmission path receiver (QAM) that receives BS digital, CS1, CS2, CATV independent broadcast, and HITS (head end in the sky) transmitted from a CATV station 5. Tuner) 9, BS digital transmission path receiver (QPSK tuner) 10 that receives BS digital 2, CS 1, CS 2 (3) transmitted from BS digital transmission path 6, and terrestrial transmission path 7. Three tuners having different configurations from the terrestrial transmission path receiving unit (OFDM tuner) 11 that receives the incoming terrestrial wave 4 are provided. Here, in the CATV transmission path, all the BS digital, CS1, CS2, and terrestrial services (the contents of the service are shown in FIG. 3 to be described later) are not necessarily retransmitted.

  In FIG. 1, some services in BS digital, CS1, CS, and terrestrial can be viewed using a tuner 9, 10, 11 of the digital broadcast receiver 8. In addition, any of the digital broadcast receiving devices 8 when receiving processing other than program viewing, that is, control tuning (terrestrial scan (engineering service reception), energization control processing, EPG information acquisition, download) exists. The tuning section for control is executed using the receivers (tuners) 9, 10, and 11 of the receiver. In this embodiment, even when viewing channel selection is being executed, a specific reception unit is used for control channel selection including downloading, etc., so that it is executed with a low probability of receiving operation interference due to program viewing. It is one of the features that it is controlled in this way (a specific control method will be described later). In other words, in this embodiment, especially in BS or terrestrial, program viewing channel selection and control channel selection are performed using which tuner (any one of tuners 9, 10, and 11 shown in FIG. 1). This is to prevent the control channel selection from being hindered by the viewing channel selection. When there is a control tuning process that cannot be performed during viewing, a tuner capable of performing the process is left for the process without being used for viewing. It is one of.

  Here, the specific contents of the tuning for control will be outlined. First, the reception function of EMM (contract information) in the energization control process is described. For the regular update of the contract, each receiver is designated with an EMM reception period (about two weeks for each business entity). The receiver performs energization control for a certain period of time and receives the EMM (writes contract information to the CAS card). The energization control is control for automatically receiving the EMM transmission channel for about 2 hours and then turning off the main power after a person performs a sub-power-off operation so as not to disturb viewing. In addition to greatly reducing the standby power of the receiver, the transmission band of the EMM (by flowing the EMM only on a specific channel) is also greatly reduced. Since the period during which the receiver performs energization control varies depending on the viewer subscription time, it can be grouped into several types. A period of energization control is determined for each group, and to which group each receiver belongs is specified by EMM.

  In addition, the download includes software update for each receiver and update of data common to all receivers. In the former case, the software for the receiver is corrected. Fix bugs due to differences in interpretation of operations, improve display and response speed, and improve operability. In the latter case, the broadcaster's logo data common to all receivers, the program genre code table, the program characteristic code table, and the reserved word table are updated.

  To explain the power control function in downloading, based on the notification information, power on the circuit necessary to receive software information with its own timer, download the software, turn off the power that was started up at the end of download, It is a power control function that keeps the circuit energized when the power is turned off, downloads the software, and turns off the power when the download ends. The same operation as the energization control function for EMM acquisition is performed.

  The terrestrial scan includes an initial scan and a rescan. In the terrestrial digital television broadcasting, the network_id is different for each transmission master, and information on other stations is stored in the network information table (NIT). It is assumed that it is not described. Therefore, in the terrestrial digital television broadcast receiver, it is necessary to search all receivable channels at the reception point and create a service list (receivable frequency table) based on service_id. It should be noted that a region where different physical channels can be received with the same network_id by MFN is assumed, but in this case, a channel having a good reception C / N or BER (bit error rate) is stored in the “receivable frequency table”. . In the case of mobile / portable receivers, it is assumed that the reception status of radio waves changes frequently, so there are multiple “receivable frequency tables” depending on the region and reception status, etc., or created by physical channels This can be considered as a product plan. However, for mobile units and portable receivers, the data storage method is a product plan.

  Further, rescanning is described as providing a function that allows the user to rescan in preparation for new opening of a station, installation of a new relay station, movement of a receiver position, or the like. When changing information that has already been set by the user, this is a notification. In the case of mobile / portable receivers, the radio wave state changes frequently, so it is assumed that it has an automatic scanning function, but the scanning time, data storage method, etc. are set as product planning.

  2, (1) in FIG. 2 represents the contents of the broadcast service in the CATV transmission line 15 and the reception possibility at a plurality of receiving units, and (2) in FIG. 2 is a BS digital (including CS1 and CS2) transmission line. 16 shows the contents of the broadcast service in FIG. 16 and the receivability at the plurality of receivers, and (3) in FIG. 2 shows the contents of the broadcast service in the terrestrial transmission path 17 and the receivability at the plurality of receivers. According to the example of FIG. 2, the services of HITS_A and voluntary A cannot be received by other receiving units other than the CATV receiving unit 9, and the service of BS_B cannot be received by other receiving units other than the BS digital receiving unit 10. In other words, the terrestrial D service cannot be received by other receiving units other than the terrestrial receiving unit 11. In other words, in FIG. 2, a service marked with X represents a service that can be received only by the transmission path or the reception unit. Note that the premise of the present invention is that the CATV station does not retransmit all services such as BS digital and terrestrial waves.

  The features of the digital broadcast receiving apparatus of the present invention will be specifically described below with reference to FIGS. FIG. 3 shows the correspondence between the contents of the broadcast service for each transmission path receiver and the control channel selection (download, terrestrial digital scan request, energization control), and FIG. 4 shows the reception of multiple transmission paths in FIG. This shows the number of independent services for each copy, the planned number of tuning stations for control in the independent service, and the planned number of tuning stations for control in the overall service. In this embodiment, as a tuning station for control, downloading is initially performed in response to a request from the manufacturer of the receiving device, and thereafter, according to an internal request on the receiving device side periodically such as every day or every 12 hours. An example of the sequential execution of the tuning for control, in which re-scanning is performed and then energization control of the EMM for writing the contract information to the CAS card is performed is illustrated (execution order is exemplary, and this order is Not exclusively).

  In FIG. 3, download control channel selection is first requested for BS_C, then scanning is requested at the CATV transmission line receiver at the present time, and further, EMM energization control is performed for HITS_A of the HITS network and the BS digital network. To be executed at BS_B. FIG. 4 shows the number of services provided only by the receiving unit, the planned number of stations selected for control only by the service, and the planned number of stations selected for control by the receiving unit. In the transmission path receiving unit, there are three independent services: HITS_A, HITS_B, and voluntary A, and the number of selected stations for control of the single service is two: terrestrial digital scan request and energization control of HITS_A. There are three scheduled numbers: terrestrial digital scan request, HITS_A energization control, and BS_C download. Similarly, the number of independent services of the terrestrial transmission path reception unit is one for the terrestrial D.

  Here, the digital broadcast receiving apparatus of the present invention is capable of performing viewing tuning and control tuning such as download and energization control using a plurality of transmission receivers 9, 10, and 11. In this receiving apparatus, if the desired viewing channel selection is at least viewable by any one of the plurality of transmission receiving units, first, any one of the plurality of transmission receiving units is set so that control channel selection can be realized. The basic concept is to select and set.

  In order to realize this basic concept, a specific selection criterion for using which receiving unit (tuner) to execute control tuning is, in conclusion, only received by the receiving unit. The receiving station with the smallest number of independent services performs tuning for control. In other words, for example, downloading is performed by the receiving unit having the least original service. By selecting the receiving unit in this way, there is an advantage that the probability of selecting a viewing channel using the receiving unit is reduced in performing the control channel selection operation.

  Further, in the digital broadcast receiving apparatus of the present invention, it is assumed that control channel selection can be performed simultaneously in a receiving apparatus state in which the main power switch is turned on and the program can be viewed. In the situation where the EMM operation is automatically started in the standby state and the main power switch is turned on and the EMM is operating as in the conventional case, the control channel selection is performed when the program viewing is selected. The concept of the present invention can also be applied to simultaneous operations with viewing channel selection.

  The control tuning procedure will be described with reference to FIGS. 3, 4 and 11. FIG. FIG. 11 is a flowchart of determination processing for performing control channel selection and viewing channel selection. Here, the following description will be made assuming download → terrestrial digital scan → energization control (HITS_A → BS_B) as the order of execution of control tuning.

"download"
Assuming that BS_A is selected in the channel selection for viewing (processing 10 in FIG. 11), it is determined whether or not the channel is for viewing (processing 11). Since Yes, processing 12 is executed. The specific content of the process 12 is shown in (2) of FIG. In (2) of FIG. 11, it is determined whether or not there is a receiving unit in use as a control channel selection (process 21). Since the flow has just started, it is No and whether control channel selection is necessary. (Processing 23), and “Yes” mark and “Yes” mark are required for download, digital terrestrial scanning, and energization control in FIG. Proceed to step 27).

  The specific contents of the processing 27 are shown in (3) of FIG. In (3) of FIG. 11, it is determined whether or not there is a receiving unit in use as a channel for viewing (process 31). Here, the fact that BS_A is selected in the process 10 does not mean that the channel selection process is immediately executed and the receiving unit is determined. In the process 10, the “BS_A button” as a button for each broadcast service is pressed. It represents that it was done. Accordingly, the determination of process 31 is No and process 33 is executed.

  In the process 31, if the number of independent services is the smallest in the control-selectable receiving unit, and if the above-mentioned number of independent services is the same, the receiving unit having the smallest number of services is selected for control. Specifically, in the example of FIG. 3, download control channel selection is required for the CATV transmission line reception unit and the BS digital transmission line reception unit. Since the former is three and the latter is two, the BS digital transmission path receiving unit is determined as a control channel. The number of services as a further selection criterion when the number of independent services is the same is 10 for the former and 6 for the latter. Subsequently, the process 28, the process 20, the process 21, and the process 22 are performed, and in the process 24, the number of scheduled tuning for control of the single service is the smallest and the number of scheduled tuning for control is the largest in the viewing selectable receiving unit. The receiving unit with the fewest services and the smallest number of services is selected for viewing. When the determination criterion of the process 24 is applied to the specific examples of FIGS. 3 and 4, the BS_A is subjected to channel selection determination processing by the CATV transmission path receiving unit which is a viewing selectable receiving unit.

  As described above, the BS digital transmission path receiving unit is used as a tuning station for control and downloading is performed, and BS_A is selected by the CATV transmission path receiving unit and viewed. As a result, the download is completed, and the control channel selection state for each receiving unit as shown in FIG. 5 is obtained. In FIG. 5, the download “◯” mark disappears in correspondence with FIG. 3. FIG. 6 corresponds to FIG. 4 and summarizes the situation of FIG.

"Digital Terrestrial Scan Request"
Next, a case where a digital terrestrial scan request is started in the situation of FIGS. 5 and 6 (viewing BS_A by the CATV transmission path receiving unit) will be described below. It is determined whether or not the channel is selected for viewing (process 11), and since it is a terrestrial digital scan, No is selected, and a control channel selection part determination process is performed (process 13). The specific content of the process 13 is the process 30. In the process 31, it is determined whether or not there is a receiving unit in use as a viewing channel selection. Since the BS_A is being viewed by the CATV transmission path receiving unit, the process 13 Then, it is determined whether or not channel selection for control can be performed by other than the receiving unit in use, and terrestrial digital scan is No because there is an internal request only in the CATV transmission line receiving unit in FIG. The process ends (process 34). Therefore, the request for the terrestrial digital scan at the CATV transmission path receiving unit is not executed at the present time, but waits for the channel selection for viewing to be changed.

  Next, when HITS_A is selected in the channel selection for viewing (the HITS_A button is pressed and selected among the channel selection buttons existing for each service), the channel selection process starts (processing 10). It is determined whether or not the station is a station (process 11), the channel selection part for viewing is determined (Yes in process 12), the process 21 is executed through the process 20, and the receiving unit in use as a channel for control is selected. It is determined whether or not there is No, so that the result in Step 23 is Yes and the process proceeds to Step 27 through the process 27 to determine whether there is a receiving unit in use as a channel for viewing. (Process 31), HITS_A is only selected by pressing and is not received because it is not actually received using the receiving unit. In the process 33, the control selectable unit performs the channel selection process for the control with the reception unit having the smallest number of single services and the smallest number of services, and selects the CATV transmission line reception unit for the time being.

  Further, through the viewing channel selection part determination process 28 and the viewing channel selection part determination processes 29 and 20, it is determined in process 21 whether or not there is a receiving unit in use as a control channel selection (process 21). (Because the CATV transmission path receiving unit is selected for control), it is determined whether or not channel selection for viewing is possible except for the receiving unit in use (process 22), and HITS_A is selected only by the CATV transmission path receiving unit. No, so no. Subsequently, in the process 25, the channel selection processing for viewing is performed by the reception unit capable of channel selection for viewing, and the channel selection processing of the CATV transmission path reception unit is performed. Next, it is determined whether there is a receiving unit in use as a channel selection for viewing through the control channel selection unit determination process 26 (process 31). Since this time is Yes, the process proceeds to process 32, and is being used. It is determined whether or not channel selection for control is possible except for the receiving unit (process 32), and the terrestrial digital scan request is No because it is the CATV transmission path receiving unit being viewed. Therefore, even when HITS_A is selected in the channel selection for viewing, the terrestrial digital scan is not executed, and the next channel selection for viewing is awaited.

  Next, in the situation shown in FIGS. 5 and 6 (the terrestrial digital scan request is made by the CATV transmission path receiving unit), the case where the terrestrial A is selected by the viewing channel will be described below. The channel selection process is started (process 10), and it is determined whether or not the channel is selected for viewing (process 11). Since the channel selection process is Yes, the channel selection process for viewing is determined and started (process 20). It is determined whether or not there is a receiving unit in use as a channel selection (process 21), and since it is No, it is determined whether or not channel selection for control is necessary (process 23), as shown in FIG. Since there is a scan request, the control channel selection unit processing 27 is started (processing 30), and it is determined whether there is a receiving unit in use as a channel selection for viewing (processing 31). (The ground A is only pressed by a button and is not currently viewed using the receiving unit).

  Proceeding to process 33, the control-selectable receiving unit has the smallest number of single services, and further, selects the receiving unit with the smallest number of services for control. As a result, the CATV transmission path receiving unit is subjected to channel selection processing. In addition, the channel selection unit for viewing is determined in the process 28, and it is determined whether or not there is a reception unit in use as a control channel selection (process 21). It is determined whether or not channel selection for viewing is possible. Since the channel selection process for viewing is the smallest, the number of scheduled tuning for control of the single service is the smallest, the number of scheduled tuning for control is the smallest, and the receiving unit with the smallest number of services is selected for viewing. As a result, the terrestrial transmission path receiving unit is selected for viewing.

  As described above, in the situation shown in FIGS. 5 and 6, the CATV transmission path receiving unit is selected as a control channel, terrestrial digital scanning is performed, and the terrestrial transmission path receiving unit is selected as a viewing channel. Will be watched. As a result, the control channel selection state shown in FIG. 5 is as shown in FIG. 7, and similarly, the state of FIG. 6 is as shown in FIG. In this way, there remains a control tuning channel in which HITS_A at the CATV transmission path receiving unit and BS_B at the BS digital transmission path receiving unit are energized.

"Energization control"
First, when control tuning for performing energization control of HITS_A is started, processing 31 is executed through processing 11, processing 13, and processing 30 in accordance with the flow procedure shown in FIG. Therefore, the process proceeds to process 32, and in process 33, the control-selectable receiver receives the smallest number of single services and the receiver having the smallest number of services is selected for control. As a result, CATV transmission is performed. The path receiving unit is selected and energization is controlled. With the processing as described above, the tuning condition for control as shown in FIGS. 9 and 10 is obtained.

  Next, under the situation of FIG. 9 and FIG. 10, the tuning for control for conducting the energization control of BS_B starts. The BS digital transmission path receiving unit is selected for control by the processing 33 by the same processing procedure as the above-described HITS_A energization control, and the BS_B energization control is executed.

  As described above, downloading, terrestrial digital scanning, and energization control (HITS_A → BS_B) can be executed in this order as control channel selection while viewing the broadcast service. Here, in the embodiment of the present invention, the number of independent services (services that can be received only by one receiving unit) among the receiving units that can be selected as the tuning for control in the determination process of the tuning unit for control is as follows. This is characterized in that the least number of transmission path receiving units are selected and set as control tuning stations. By doing so, the probability that the control channel is affected (obstructed) by the viewing channel is reduced.

It is a figure which shows the outline of a structure and function in the Example which concerns on the digital broadcast receiver of this invention. It is a figure showing the list of the content of the broadcast service for every some transmission path in a present Example, the classification of a receiving part, the receivability in a several receiving part, etc. The figure which shows the correspondence of the content of the broadcast service for every several transmission-path receiving part in a present Example, and the tuning for control before execution of tuning for control (downloading, terrestrial digital scan, energization control, EPG information acquisition, etc.) It is. FIG. 4 is a diagram showing the number of independent services for each of a plurality of transmission path receivers in FIG. 3, the planned number of tuning stations for control in a single service, and the planned number of tuning stations for control in an overall service. It is a figure which shows the correspondence of the content of the broadcast service for every several transmission-path receiving part in a present Example, and the tuning for control (terrestrial digital scan, electricity supply control, etc.) after download execution. FIG. 6 is a diagram showing the number of independent services for each of the plurality of transmission path receivers in FIG. 5, the planned number of tuning stations for control with a single service, and the planned number of tuning stations for control with an overall service. It is a figure which shows the correspondence of the content of the broadcast service for every several transmission-path receiving part in a present Example, and the tuning for control (energization control etc.) after execution of a terrestrial digital scan. FIG. 8 is a diagram illustrating the number of independent services for each of a plurality of transmission path receivers in FIG. 7, the planned number of tuning stations for control with a single service, and the planned number of tuning stations for control with an overall service. It is a figure which shows the correspondence of the content of the broadcast service for every several transmission-path receiving part in a present Example, and the tuning for control after execution of electricity supply control. FIG. 10 is a diagram showing the number of independent services for each of the plurality of transmission path receivers in FIG. 9, the planned number of tuning stations for control with a single service, and the planned number of tuning stations for control with an overall service. It is a figure which shows the flow of the determination process in each of the channel selection for viewing regarding this example, and the channel selection for control.

Explanation of symbols

1 HITS (Head End in the Sky)
2 BS digital 3 CS1, CS2
4 Terrestrial 5 CATV station 6 BS digital, CS1 and CS2 receiving antenna 7 Terrestrial receiving antenna 8 Receiver 9 CATV transmission path receiver 10 BS digital transmission path receiver 11 Terrestrial transmission path receiver 15 CATV transmission path 16 BS Digital transmission line 17 Terrestrial transmission line

Claims (3)

A digital broadcast receiving apparatus comprising a respective transmission path receiving unit for receiving services of a plurality of transmission paths, and capable of receiving the same service from a plurality of transmission paths,
The channel selection for viewing and the channel selection for control are selected by any one of the plurality of transmission path receiving units so that program viewing and control such as download, digital scan, and energization control can be operated in parallel. Station processing,
The channel selection process for the control channel selection is performed without being affected by the channel selection process for viewing as long as the channel selection process for viewing channel can be viewed by any receiving unit. A digital broadcast receiver characterized by being provided. A digital broadcast receiving apparatus comprising a respective transmission path receiving unit for receiving services of a plurality of transmission paths, and capable of receiving the same service from a plurality of transmission paths,
The channel selection for viewing and the channel selection for control are connected to the plurality of transmission path receiving units so that the program viewing from the network and the control of downloading, digital scanning, energization control, etc. can be performed in parallel. Channel selection processing in either of,
The channel selection processing of the control channel selection is performed by selecting and setting, in each transmission path receiving section, a transmission path receiving section that has the smallest number of independent services that can be received only by the receiving section. Receiver device. In claim 2,
When the number of independent services is the same in the transmission path receiving section, the transmission path receiving section having the smallest number of services is selected and set as the control channel selection.

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