US 5,852,471 AGranted

Television multiplex data extracting apparatus

AssigneeSony Corporation

InventorsMiki Furuya, Tadashi Ezaki, Teruhiko Kori, Satoshi Tsuchiya

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Abstract

There is provided a highly flexible television multiplex data extracting apparatus which can fetch the multiplex data of the television broadcast services where the horizontal section for multiplexing data is not fixed, wherein a register receives an information from a controller to generate information for designating the horizontal section for fetching multiplex data, sampling frequency information of the data to be multiplexed and information for designating fetch of data, a sampling apparatus has the first and second fetch modes and detects any one mode of the first and second modes depending on the information from the register, the first mode is the extracting mode corresponding to the case where the horizontal section for multiplexing data is fixed and the second mode is designated to discriminate existence of the multiplex data in the designated horizontal section and fetch the data depending on the discrimination result.

Claims11

Dependent claims

A television multiplex data extracting apparatus for extracting multiplex data in the designated horizontal section among those in the vertical blanking period of the television signal, said extracting apparatus comprising:

mode designating means for designating a data fetch mode;
data extracting means for providing first and second modes as said data fetch mode to isolate and for extracting the multiplex data of said designated horizontal section from said television signal, said data extracting means having means for discriminating the existence or non-existence of the multiplex data;
and
memory means for storing output data from said data extracting means;
wherein when said first mode is designated by said mode designating means, said data extracting means extracts the multiplex data of said designated horizontal section and transfers said multiplex data to said memory means;
and
wherein when said second mode is designated by said mode designating means, said discriminating means of said data extracting means discriminates existence or non-existence of the multiplex data in said designated horizontal section and when existence of said multiplex data is discriminated, said data extracting means extracts said multiplex data and transfers said multiplex data to said memory means.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/665,882Filed 19 Jun 1996
Priority: JP 7-17668420 Jun 1995
Granted: 22 Dec 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04N 7/035
Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame: circuits for the digital…
H04N 7/0357
Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error…: for…
H04N 7/088
With signal insertion during the vertical blanking interval only: the inserted signal being digital
H04N 7/0887
The inserted signal being digital: for the transmission of programme or channel identifying signals