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Method and apparatus for information labeling and control
| Details |
Inventors: Block, Robert S.; Bramwell, Jonathan;
Assignee: Block; Robert S. (Marina del Ray, CA)
Primary Examiner: Srivastava; Vivek
Assistant Examiner:
Attorney, Agent or Firm: Burns, Doane, Swecker & Mathis, LLP
A method and apparatus for information labeling and control includes central station equipment which combines a program signal with content labels which separately and continuously identify the audio, video, and data content of the program signal, and user station equipment which generates a local content label identifying program material which is acceptable to the user. By comparing the two labels the user station equipment can block or substitute alternative audio, video, or data for offensive portions of a program signal received through a transmission or stored for playback on various media such as video tapes, audio tapes, CDs, computer disks, optical storage media, and video game cartridges. |
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DETAILED DESCRIPTION Referring now to FIG.
1, an exemplary information labeling and control apparatus adapted for television viewing will be described.
It should be understood that application of the present invention is not limited to television systems, and that it may be applied to any system of communication in which information is delivered to a user.
In an exemplary embodiment for television, the apparatus comprises central station equipment 10 which supplies program signals to viewer station equipment 20 at each of the viewer stations.
As will be described hereinafter in greater detail, the program signal includes audio and video signals as well as various synchronizing signals and labels.
The audio and video signals can be generated from a conventional source such as television camera equipment.
The program signal is supplied to the viewers either by conventional broadcast or cable techniques and can be transmitted with a suitable conventional transmitter.
The program signal can be either scrambled (e.
g.
, encrypted) or not scrambled (in the clear), and can be an analog signal, such as in the NTSC, PAL, or SECAM format, or a digital signal.
As shown in FIG.
1, the central station equipment 10 may include a program labeling station 30 for generating or receiving the program signals and for generating the various synchronizing signals and labels, a storage unit 40 for storing the program signal after the labels have been generated and combined with the program signal, and a modulator and transmitter 50 for transmitting the program signal to the viewer station equipment 20.
The viewer station equipment 20 may include a tuner 60 or program selector 70 for receiving the program signal, a demodulator 80 and/or decoder 90 for demodulating and decoding the received program signal, a viewing control unit 100 which allows a viewer to control access to the received program signal by generating various local labels, a label interpretation unit 110 which evaluates and compares the locally generated and transmitted labels, an access control unit 120 which controls access to the program signal, and a modulator 130 for modulating the access controlled program signal onto a suitable carrier frequency prior to transmission to the TV antenna input
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