 Cooperative system for measuring electronic media |
| Generally, according to one aspect of the invention, media information presented to a panel member ... |
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| Circuit arrangement for the digital identification of a transmission standard |
| The object of the invention is to provide a circuit arrangement for the digital identification of a ... |
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| Multi-channel digital video transmission receiver with improved channel-changing response |
| The multi-channel digital video receiver and method that are the subject of this invention can ... |
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| Device for receiving satellite broadcast and a receiving method therefor |
| It is therefore an object of the present invention to provide a satellite broadcast receiver and a ... |
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| Recording apparatus which avoids ink sheet sticking and image streaking |
| It is an object of the present invention to provide a heat-transfer recorder and facsimile ... |
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| Organic electroluminescent element |
| Accordingly, an object of the present invention is to provide an organic EL element with high ... |
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| Television program delivery system |
| OF THE PREFERRED EMBODIMENT A Television Program Delivery System Description 1. Introduction FIG. 1... |
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| Video signal dropout detector |
| OF THE INVENTION While this invention is susceptible of embodiment in many different forms, there ... |
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| Method of and an apparatus for generating a normalizing curve |
| The present invention is directed to a method of converting original color image signals D.sub.x ... |
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Temporary simulated off state in a restart of a video display
| Details |
Inventors: Mears, Mark Gilmore; Duggan, Scott Joseph; Gospel, Thomas Edward; Johnson, Gene Harlow;
Assignee: Rhomson Licensing S.A. (Boulogne, FR)
Primary Examiner: Lee; Michael H.
Assistant Examiner:
Attorney, Agent or Firm: Tripoli; Joseph S., Laks; Joseph J., Fried; Harvey D.
A liquid crystal display television receiver projection system uses a high-intensity discharge lamp as a back lighting source. The lamp is of the type that should not be re-started or turned on immediately after being turned off. In response to a user power off command, the display screen will immediately give a false appearance of being turned off, during a first interval of, for example, 30 seconds that immediately follows the power off command. Despite the appearance of being turned off, the lamp is maintained powered on, during the first interval. Should a user issue a power on command, before the first interval has elapsed, the user will not experience any start-up delay. Should the user not issue et power on command, during the first interval, the lamp will be de-energized. |
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DETAILED DESCRIPTION FIG.
1 illustrates a flow chart for explaining modes of operation of a liquid crystal display (LCD) or a liquid crystal on silicon (LCOS) projection television (TV) receiver 300 of FIG.
3, embodying an inventive feature.
TV receiver 300 utilizes a high-intensity discharge lamp 302 forming a back light source for a light valve 350.
FIG.
2 illustrates in a detailed flow chart of operation of TV receiver 300 of FIG.
3.
Similar symbols and numerals in FIGS.
1-3 indicate similar items or functions.
Many high definition television (HDTV) receivers respond to both the "TV" Infra Red (IR) preamble code (0) and to the "satellite/SAT1" IR preamble code (8).
Accordingly, the preamble is not important to the following discussion and will be omitted.
In the following discussion, it will be helpful to note that "C5" is the discrete "POWER ON" IR code, "C4" is the discrete "POWER OFF" IR code, and "D5" is the discrete "POWER TOGGLE" IR code.
These hexadecimal codes can vary from one manufacturer to the next, and accordingly, are not included in the Figures.
It can also be noted that most receivers and remote control systems are designed to operate with power-on and power-off commands or with power-toggle commands, but not both.
Most systems manufactured by Thomson multimedia, for example, are responsive to all three commands, and this is reflected in the flow chart of FIG.
2 and in the following discussion.
Assume that TV receiver 300 of FIG.
3 operates in a normal Video Display mode, referred to in a block 110 of FIG.
1.
A user issuing a power off command via, for example, a control signal 301 and an IR link 310 of FIG.
3 causes TV receiver 300 to enter an Error Recovery mode, referred to in a block 111 of FIG.
1, via a flow chart path 110a.
If the power off command was issued inadvertently, the user can recover from the error by issuing, within, for example, a 30 second interval, a power on command, as depicted by a flow chart path 111a, via a control signal 304 of FIG.
3 to turn TV receiver 300 back on
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Television 
