Broadcast signal reception apparatus attaining channel selection function

Abstract

A selection operation of a designated channel for a broadcast signal received via an antenna is performed, so that the broadcast signal of the designated channel is detected and the detected broadcast signal is output to a monitor via a video IC and the like. When the power of a microcomputer is turned on (power supply is started), the microcomputer causes a tuner to perform a channel-selection operation for the channel that has been selected at the time of most recent turn-off of the power (power supply stop). As a result of the channel-selection operation, if the tuner cannot detect the broadcast signal of the channel, the microcomputer displays an image of that channel (an image where an video image is not shown) on the monitor and thereafter displays an image for notifying a user of a measure to be taken through an OSD circuit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A and 1B illustrate a configuration of a TV receiver according to one embodiment of a broadcast signal reception apparatus of the present invention.

FIG. 2 shows an AFT voltage characteristic.

FIG. 3 is a conceptual diagram showing an example of channel position data storage.

FIG. 4 shows an exemplary display image of a measure to be taken.

FIG. 5 is a processing flowchart for displaying a measure to be taken when a broadcast signal of a selected channel is absent when power is turned on.

FIG. 6 shows an exemplary display image for selecting a language.

Claims

1. A broadcast signal reception apparatus, comprising: a display unit displaying an image based on a supplied signal on a prepared display;a channel-selection operation unit performing a channel-selection operation of a designated channel for a received broadcast signal and outputting a broadcast signal corresponding to the designated channel to said display unit;a channel-selection control unit controlling, when the power is turned on, said channel-selection operation unit such that said channel-selection operation unit selects a channel, that has been selected at time of most recent turn-off of power, as said designated channel; anda display control unit displaying an image based on an output from said channel-selection operation unit on said display as a result of operation by said display unit and thereafter displaying an image for instructing a measure on said display, when the broadcast signal of said designated channel is absent in the output from said channel-selection operation unit controlled by said channel-selection control unit.

2. The broadcast signal reception apparatus according to claim 1, wherein in order to provide hints on the measure, said image for instructing said measure includes at least one of an instruction to refer to an instruction manual of said broadcast signal reception apparatus, an instruction to check connection of an antenna terminal, and an instruction to perform auto preset.

3. The broadcast signal reception apparatus according to claim 2, further comprising a channel re-selection control unit controlling said channel-selection operation unit to perform channel selection again, when an operation in accordance with the measure instructed in the image for instructing said measure is performed.

4. The broadcast signal reception apparatus according to claim 3, wherein if the broadcast signal of said designated channel is present in the output from said channel-selection operation unit as a result of said channel selection again by said channel-selection operation unit, said display control unit turns off said image for instructing said measure displayed on said display.

5. The broadcast signal reception apparatus according to claim 4, wherein said display control unit determines presence/absence of the broadcast signal of said designated channel based on whether a synchronizing signal of said broadcast signal is detected in the output from said channel-selection operation unit.

6. The broadcast signal reception apparatus according to claim 5, wherein said display control unit displays an instruction of said measure in a language of a designated type.

7. The broadcast signal reception apparatus according to claim 6, further comprising a unit outputting said instruction of the measure with voice/sound, when said image of said measure is displayed as a result of operation by said display control unit.

8. The broadcast signal reception apparatus according to claim 7, wherein said instruction of said measure is output using voice/sound in the language of the designated type.

9. The broadcast signal reception apparatus according to claim 8, further comprising a storage unit storing image data, wherein if a signal based on said image data read from said storage unit is provided to said display unit, said image of said measure is not displayed.

10. The broadcast signal reception apparatus according to claim 9, further comprising an external input portion for input of externally provided image data, wherein if a signal based on-said image data input through said external input portion is provided to said display unit, said image of said measure is not displayed.

11. The broadcast signal reception apparatus according to claim 1, further comprising a storage unit storing image data, wherein if a signal based on said image data read from said storage unit is provided to said display unit, said image of said measure is not displayed.

12. The broadcast signal reception apparatus according to claim 1, further comprising an external input portion for input of externally provided image data, wherein if a signal based on said image data input through said external input portion is provided to said display unit, said image of said measure is not displayed.