Digital broadcast receiving apparatus

• US 20020021768A1
• Filed: 07/11/2001
• Published: 02/21/2002
• Est. Priority Date: 07/11/2000
• Status: Active Grant

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Kato, Sei
• Granted Patent: US 7,039,127 B2
• Time in Patent Office: Days
• US Class Current: 375/316
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving

Abstract

A receivable service is selected from each ensemble of a digital broadcast, and the error rate of the selected service is measured. Only a service belonging to an ensemble containing a service which satisfies a predetermined reference value is searched and preset. A service belonging to an ensemble containing a service with a low error rate is searched and preset, with priority over a service belonging to an ensemble containing a service with a high error rate. The reception level of a receivable service may be used instead of the error rate as the selection reference for processing.

Claims

1. In a receiver for receiving digital broadcasts of a plurality of ensembles and one ensemble including a plurality of services, a digital broadcast receiving apparatus which performs at least one of a search operation and a preset operation for a receivable service, comprising:

an error rate detecting part for detecting an error rate of reception of said services; and

an error rate comparing part for comparing a value detected by said error rate detecting part with a predetermined reference value;

wherein at least one of said search operation and said preset operation is performed, based on a compared result by said error rate comparing part, for said services belonging to said ensembles containing a service with a low error rate which satisfies said predetermined reference value.

3. A digital broadcast receiving apparatus according to claim 1, wherein said error rate detecting part detects an error rate of at least one of said services contained in said ensembles containing a receivable service.

2. In a receiver for receiving digital broadcasts of a plurality of ensembles and one ensemble including a plurality of services, a digital broadcast receiving apparatus which performs at least one of a search operation and a preset operation for a receivable service, comprising:

an error rate detecting part for detecting an error rate of reception of said services; and

an error rate comparing part for comparing values detected by said error rate detecting part for services contained in each ensemble;

wherein at least one of said search operation and said preset operation is performed, based on a compared result by said error rate comparing part, while a higher priority for the operation being assigned to one or more services belonging to an ensemble containing a service with a lower error rate, than one or more services belonging to an ensemble containing a service with a higher error rate.

4. A digital broadcast receiving apparatus according to claim 2, wherein said error rate detecting part detects an error rate of at least one of said services contained in said ensembles containing a receivable service.

5. In a receiver for receiving digital broadcasts of a plurality of ensembles and one ensemble including a plurality of services, a digital broadcast receiving apparatus which performs at least one of a search operation and a preset operation for a receivable service, comprising:

a reception level detecting part for detecting a reception level of reception of said services; and

a reception level comparing part for comparing a value detected by said reception level detecting part with a predetermined reference value;

wherein at least one of said search operation and said preset operation is performed, based on a compared result by said reception level comparing part, for said services belonging to said ensembles containing a service with a high reception level which satisfies said predetermined reference value.

7. A digital broadcast receiving apparatus according to claim 5, wherein said reception level detecting part detects a reception level of at least one of said services contained in said ensembles containing a receivable service.

6. In a receiver for receiving digital broadcasts of a plurality of ensembles and one ensemble including a plurality of services, a digital broadcast receiving apparatus which performs at least one of a search operation and a preset operation for a receivable service, comprising:

a reception level detecting part for detecting a reception level of reception of said services; and

a reception level comparing part for comparing values detected by said reception level detecting part for services contained in each ensemble;

wherein at least one of said search operation and said preset operation is performed, based on a compared result by said reception level comparing part, while a higher priority for the operation being assigned to one or more services belonging to an ensemble containing a service with a higher reception level, than one or more services belonging to an ensemble containing a service with a lower reception level.

8. A digital broadcast receiving apparatus according to claim 6, wherein said reception level detecting part detects a reception level of at least one of said services contained in said ensembles containing a receivable service.