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Data transmitter

A technology of data transmission and invalid data, which is applied in the transmission system, radio transmission system, pulse modulation TV signal transmission, etc., and can solve the problem that the TS signal cannot be used as it is for broadcasting.

Inactive Publication Date: 2009-01-14
KOKUSA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] As mentioned above, since the digital signal and the format to be processed are different between the conventional STL device and the conventional FPU device, the broadcast TS signal for the digital STL device cannot be directly applied to the digital FPU device.

Method used

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Embodiment Construction

[0057] Next, an embodiment of the present invention will be described with reference to the drawings. figure 1 It is a block diagram showing a schematic configuration of an embodiment of the present invention. right with Figure 11 The same parts are marked with the same symbols. figure 1Among them, the transmitter 1101 is composed of a rate conversion unit 101 , a DVB encoding processing unit 102 , a data encoding unit 1104 and a modulation unit 1105 . In addition, 103 is a mode switching signal input terminal. First, an image signal is converted into a TS (Transport Stream) signal for broadcasting, such as a 32.5 Mbps digital signal, by an external encoder such as MPEG (Motion Picture Experts Group) 2 or MPEG4, and applied to the input terminal 1102 . This 32.5 Mbps broadcast TS signal is supplied to the rate conversion unit 101 , where it is converted into, for example, a 60 Mbps TS signal used by the FPU device, and supplied to the DVB encoding processing unit 102 . ...

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PUM

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Abstract

The invention solves the problem, wherein a TS (transport stream) signal for broadcast for a digital STL device cannot be applied to a digital FPU device, as it is, since a data signal and a format to be handled are different in a conventional STL (Studio-to-Transmitter Link) device and a conventional FPU (Field Pick-up Unit). A data transmitting device comprises a first transmitter for transmitting a TS signal, and a first receiver for receiving the TS signal from the first transmitter. The first transmitter comprises a rate converter for changing a bit rate according to the content of at least the TS signal, a DVB coding processor for selecting RS coding according to the content of the TS signal, and a modulator. The first receiver comprises a demodulator for demodulating at least the received TS signal, a DVB-decoding processor for selecting RS decoding according to the content of the TS signal, and an inverse rate converter for changing the bit rate according to the content of the TS signal.

Description

technical field [0001] The present invention relates to a data transmission device, and more particularly, to a data transmission device that transmits a digital signal that is a TS (transport stream) signal such as MPEG. Background technique [0002] In current television broadcasting, a TV station having a studio creates a program and the like, and transmits the program and the like as a TS signal to, for example, a transmission station located on a mountain. This is called a sender. The transmitted TS signal is sent to a receiver as a radio wave, and from the receiver to a high-power transmitter, it is sent to each home as a radio wave. The transmission device that connects the studio (Studio) to the high-power transmission device is called an STL (Studio to Transmitter Link: Studio to Transmitter Link) device. The STL device is an important device for transmitting TS signals, and if a failure or the like occurs due to some problem, broadcasting of programs or the like ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/24H04B7/155H04L29/08H04N7/08H04N7/081
CPCH04N21/234309H04N21/23611
Inventor 宫下敦石井光昭
Owner KOKUSA ELECTRIC CO LTD