JPH065266U - Satellite receiver with bitstream input - Google Patents

Abstract

(57) [Summary] [Purpose] Audio Hi for all satellite broadcasting and communications
To provide a satellite broadcast receiver with a bit stream input capable of Fi reproduction. [Construction] The receiver 10 includes a tuner section 11, a PCM decoder 12, a bit stream output terminal 13, a bit stream input terminal 14, a changeover switch 15, and an audio processing section 1.
6, an audio terminal 17 and a video processing unit 18. In addition, the descrambler 20 includes the first voice processing unit 21.
And a second audio processing unit 22 and a video processing unit 23.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a satellite broadcast receiver, especially a satellite broadcast receiver with a bit stream input.

[0002]

[Prior art]

 Recently, various satellite broadcasts using broadcasting satellites, communication satellites, etc. are planned. These include broadcasts with various scrambles. For scrambled broadcasts, not only special equipment for descrambling is required, but even for non-scrambled broadcasts, ordinary television receivers cannot directly receive satellite broadcasts. Absent. An adapter for satellite broadcasting was necessary here.

[0003]

[Problems to be solved by the device]

 However, there is no guarantee that HiFi playback of audio is considered in all adapters and descrambling units, so there is dissatisfaction for HiFi lovers.

Therefore, it is an object of the present invention to provide a satellite broadcasting receiver with a bit stream input capable of performing audio HiFi reproduction for all satellite broadcasting / communication.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention is provided with a PCM decoder, a bit stream output terminal, a bit stream input terminal, and an audio processing section in order to achieve the above-mentioned object, and the PCM decoder. , A bit stream output terminal, a bit stream input terminal, and a voice processing section, and a descrambler having a voice processing section. The bit stream input terminal is connected to the descrambler. The feature is that the bit stream that has been descrambled is input.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a state in which a satellite broadcast receiver according to the present invention and a descrambler are connected. The receiver 10 includes a tuner section 11, a PCM decoder 12, a bit stream output terminal 13, a bit stream input terminal 14, a switching switch 15, an audio processing section 16, an audio terminal 17 and a video processing section. It is composed of 18.

The operation of the satellite broadcast receiver 10 is as follows. The digital voice signal detected by the tuner section 11 is demodulated by the PCM decoder 12 and is once inputted to the descrambler 20 from the bit stream output terminal 13 as a 2 megabit bit string. The bit stream whose voice is descrambled by the first voice processing unit 21 of the descrambler is used for D / A conversion, de-emphasis, level shift, etc. in the second voice processing unit 22 of the descrambler itself. It is sent back to this receiver without being processed. Therefore, the receiver has a bit stream input terminal 14.

When a scrambled bit is detected by the PCM decoder 12, the changeover switch 15 switches the switch to introduce the descrambling bit stream into the PCM decoder 12 again, and performs D / A conversion. After that, it is sent to the voice processing unit 16. The voice processing unit 16 performs processing such as de-emphasis and level shift, but has a higher HiFi specification than the voice processing unit 22 on the descrambler side. The unscrambled voice is D / A converted by the PCM decoder 12 and sent to the voice processing unit 16. The output of the audio processor 16 is output from the audio terminal 17 to an audio amplifier and other devices.

[0010]

[Effect of device]

 As described above, in the present invention, since the satellite broadcast receiver has its own audio processing unit, even if the signal is scrambled, the audio processing unit of the descrambler can be bypassed, so that HiFi reception of audio is possible. Has the effect of always guaranteeing

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 10 satellite broadcast receiver 11 tuner section 12 PCM decoder 13-bit stream output terminal 14-bit stream input terminal 15 changeover switch 16 audio processing section 17 audio terminal 20 descrambler 21 first audio processing section 22 Second voice processing unit

Claims (2)

[Scope of utility model registration request] 1. A satellite broadcast receiver comprising a PCM decoder, a bit stream output terminal, a bit stream input terminal, and an audio processing section. 2. An audio section comprising a PCM decoder, a bit stream output terminal, a bit stream input terminal and an audio processing section, and a descrambler having the audio processing section. -A satellite broadcast receiver characterized in that the descrambler descrambled bit stream is input to the frame input terminal.