Verification of image data

Details Verification of image data Verification of image data

1999-06-25

2003-03-18

Najjar, Saleh (Department: 2154)

Electrical computers and digital processing systems: multicomput

Computer-to-computer session/connection establishing

Network resources access controlling

C709S225000, C709S226000, C709S231000, C705S051000, C705S054000, C705S057000, C705S059000

Reexamination Certificate

active

06535919

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a verification apparatus, verification method, verification system, and storage medium, which are suitable when verification is necessary for the purpose of copyright protection associated with individual objects of a moving image to be played back.
2. Description of the Related Art
FIG. 1
is a block diagram showing a conventional digital video data transmission/reception system. As shown in
FIG. 1
, a digital video data distribution server
10
downloads digital video data recorded in a digital video data storage device
12
such as a hard disk annexed to the distribution server
10
to a digital video data reception client
20
through a network
30
such as the Internet in response to a request from the reception client
20
. The distribution server
10
has a conversion section
11
for coding digital video data. Digital video data is coded by the conversion section
11
to decrease the data amount, and distributed to the reception client
20
in accordance with a procedure such as the TCP/IP protocol. The reception client
20
has a conversion section
21
for decoding digital video data. A received digital video signal is played back by the conversion section
21
and displayed, recorded, or edited.
An example of a system which constructs one moving image scene from a plurality of objects, codes and compresses each object by the conversion section
11
of the distribution server
10
, transfers the objects to the reception client
20
, and decodes and reconstructs the objects in the reception client
20
to play back the moving image scene is an MPEG-4 player.
FIG. 2
is a block diagram of a conventional MPEG-4 player.
FIG. 2
is based on “ISO/IEC FCD 14496-1 FIG.
1
-
1
”, and this has been described in detail in “ISO/IEC FCD 14496-1”. Only a schematic arrangement will be described below.
An MPEG-4 bit stream transmitted through a network or the like or MPEG-4 bit stream read out from a storage medium such as a DVD-RAM is received by “TransMux Layer” in accordance with a procedure corresponding to transmission/read (session establishment) and separated into streams such as scene description information, object data, and object description data, decoded, and played back by a “FlexMux” section. On the basis of the scene description information, a scene is played back or graphically processed.
FIG. 3
is a schematic and simple block diagram of the player shown in FIG.
2
. When verification is necessary for the purpose of copyright protection for individual objects, a bit stream containing a plurality of object data including the scene description information may contain “IP Data Set” (copyright information group).
However, even if the transmission bit stream contains “IP Data Set” (copyright information group), and “IP Data” is played back by “Object Descriptors” of the system shown in
FIG. 2
or
3
, “IP Data” is not processed in image playback processing. For this reason, “IP Protection” (copyright protection) processing is not executed.
In the system shown in
FIGS. 2
or
3
, even when an “IP Data Set” (copyright information group) stream is contained in addition to the transmission bit stream, “IP Data” is not always played back by “Object Descriptors”. Even if “IP Data” is played back by “Object Descriptors”, “IP Data” is not processed in image playback processing. For this reason, “IP Protection” (copyright protection) processing is not executed.
In this case, an application can receive decoded “IP Data Set” and execute “IP Protection” processing. However, this processing is unique to the application and is not always executed by another player or a player of another type.
In the system shown in
FIG. 2 and 3
, an image is played back after verification processing is performed for individual objects. For this reason, when new objects appear one after another in playing back a moving image scene, production must be temporarily stopped to require verification.
When verification is performed without stopping playback, images to be played back are omitted corresponding to the time required for verification.
SUMMARY OF THE INVENTION
The present invention has been made in consideration of the above situation, and has as its object to efficiently execute verification processing, effectively protect a copyright or the like, effectively use copyright works, and solve the problem that a played back image is omitted due to the delay time associated with verification processing.
According to the first aspect of the present invention, there is provided a verification apparatus characterized by comprising reception means for receiving moving image data containing use permission information from an external information processing apparatus, playback means for playing back part of the moving image data received by the receptor means, input means for inputting characters/symbols, comparison means for comparing the use permission information contained in the moving image data received by the reception means with the characters/symbols input by the input means, and transmission means for, when comparison by the comparison means has revealed that the use permission information matches the characters/symbols, transmitting an instruction signal for instructing to play back the moving image data again from first image data played back by the playback means to the external information processing apparatus.
If the verification apparatus, the moving image data is preferably, e.g., compression-coded moving image data.
Preferably, the verification apparatus further comprises, e.g., storage means for storing the characters/symbols in advance, and the comparison means compares the use permission information contained in the moving image data received by the reception means with the characters/symbols stored in the storage means.
In the verification apparatus, the playback means preferably plays back, e.g., time or spatial part of the moving image data.
In the verification apparatus, the transmission means preferably transmits, together with the instruction signal, e.g., a signal representing that the verification apparatus can use the moving image data.
In the verification apparatus, the transmission means preferably normally receives the moving image data using, e.g., an interface used to receive the moving image data in a normal direction and transmits the instruction signal using the interface in a reverse direction to the normal direction.
In the verification apparatus, the transmission means preferably transmits the instruction signal using, e.g., an upstream of an MPEG4 bit stream.
Preferably, the verification apparatus further comprises, e.g., an interface connected to a communication line, and the transmission means transmits the instruction signal through, e.g., the interface and communication line.
According to the second aspect of the present invention, there is provided a verification apparatus characterized by comprising reception means for receiving moving image data constructed by a plurality of object data including object data containing source information and use permission information, separation means for separating the moving image data received by the reception means into the plurality of object data, playback means for playing back, of the object data separated by the separation means, object data which do not contain the use permission information, input means for inputting characters/symbols, comparison means for comparing the use permission information with the characters/symbols input by the input means in association with, of the object data separated by the separation means, the object data containing the use permission information, and transmission means for, when comparison by the comparison means has revealed that the used permission information matches the characters/symbols, transmitting an instruction signal for instructing to play back the moving image data again from first image data played back by the playback means to an external information processing apparatus cor

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