US5138450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density character and/or figure displaying apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1990-05-17
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Granted: 1992-08-11
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Expires: 2010-05-17
Abstract
Abstract A display apparatus capable of displaying, by use of an ordinary television set function, character/figure information having a higher display density than standard chemistry character figure information. The apparatus includes a first reducing device for reducing into a pixel a partition having vertical and horizontal lengths respectively twice the vertical and horizontal lengths of a smallest pixel zone associated with a dot pattern signal, character generators and a second reducing device for producing a reduced character pattern associated with character codes in a received signal, and a third reducing device for reducing into a block a partition having vertical and horizontal lengths respectively twice the vertical and horizontal lengths of an attribute data specification block specifying a character/figure display attribute in the signal. The reduced character/figure image signals of the entire screen information obtained through the constituent components above are displayed via a display processing circuit. In a display area appropriately selected by the user, a partial image can be displayed in a specified display density.
Inventors
- 👤 Shin Fukuda
- 👤 Ken Sakamoto
- 👤 Toyoaki Unemura
- 👤 Tomoji Kondo
- 👤 Takashi Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:13
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/08; G; G09; G09G; G09G5/00; G09G5/36; G09G5/39; G09G5/391
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
229 words
A character/figure information display apparatus comprising: a receiver circuit for receiving a character/figure information signal including a display control information signal; a display memory for storing therein a character/figure image signal obtained through a decoding operation conducted on the character/figure information signal; first decode means for decoding the received character/figure information signal into a character/figure image signal having a display density different from a display density specified by the display control information signal when a memory capacity necessary for displaying the character/figure signal in the specified display density exceeds a storage capacity of said display memory and for loading said display memory with the decoded character/figure image signal; second decode means for decoding a portion of the received character/figure information signal into a character/figure image signal having the display density specified by the display control information signal when a memory capacity necessary for displaying a storage character/figure signal in the specified display density exceeds a storage capacity of said display memory and for loading the decoded character/figure image signal in said display memory; a display processing circuit for displaying the character/figure image signals stored in the display memory on a display section; and display switch means for achieving a change-over operation between the character/figure image signal decoded by said first decode means and the character/figure image signal decoded by said second decode means and for outputting the selected signal.
Claim 2
Dependent Claim
229 words
A character/figure information display apparatus comprising: a receiver circuit for receiving a character/figure information signal including a display control information signal; a display memory for storing therein a character/figure image signal obtained through a decoding operation conducted on the character/figure information signal; first decode means for decoding the received character/figure information signal into a character/figure image signal having a display density different from a display density specified by the display control information signal when a memory capacity necessary for displaying the character/figure signal in the specified display density exceeds a storage capacity of said display memory and for loading said display memory with the decoded character/figure image signal; second decode means for decoding a portion of the received character/figure information signal into a character/figure image signal having the display density specified by the display control information signal when a memory capacity necessary for displaying a storage character/figure signal in the specified display density exceeds a storage capacity of said display memory and for loading the decoded character/figure image signal in said display memory; a display processing circuit for displaying the character/figure image signals stored in the display memory on a display section; and display switch means for achieving a change-over operation between the character/figure image signal decoded by said first decode means and the character/figure image signal decoded by said second decode means and for outputting the selected signal.
Claim 3
Dependent Claim
204 words
An apparatus according to claim 1 further comprising: first reduce means for processing a pattern data signal of the character/figure information signal, said pattern data signal representing a figure with dots, and for achieving a logical sum operation between respective pixels of each partition of a smallest pixel block associated with the pattern data signal, said partition having a vertical length of m1 pixels and a horizontal length of m2 pixels, thereby reducing the partition into m3 pixels; second reduce means including a first character generator for producing a pattern associated with character codes in the character/figure information signal and a second character generator for generating a reduced pattern associated with the character codes, said second reduce mans being responsive to an output from said second character generator to display a reduced character/figure image; and third reduce means for processing pattern data items specifying character/figure display attributes in the character/figure information signal and for selecting, from pattern data times of each block of a partition as a smallest specification unit of pattern data, said partition having a vertical length of n1 blocks and a horizontal length of n2 blocks, an attribute data item most frequently appearing therein, thereby reducing the partition into n3 blocks.
Claim 4
Dependent Claim
39 words
An apparatus according to claim 1 further comprising area display means for displaying an area in a display screen presented by said first decode means, said area being available for the second decode means to display therein an image.
Claim 5
Dependent Claim
49 words
An apparatus according to claim 1 further comprising a buffer memory for storing therein a received character/figure information signal, said first and second decode means decoding the character/figure information signal stored in the buffer memory to display the decoded signal, thereby achieving a changing-over between character/figure images thus displayed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |