Video imaging device with image altering controls and related method

• US 4,962,463 A
• Filed: 07/01/1988
• Issued: 10/09/1990
• Est. Priority Date: 07/01/1988
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Digital Equipment Corporation (HP Inc.)
• Inventors: Crossno, Patricia J., Hedberg, William F., Mendelsohn, Gary H.
• Primary Examiner(s): Harkcom, Gary V.
• Assistant Examiner(s): HERNDON, HEATHER R
• Application Number:
  US07/214,221
• Time in Patent Office: 830 Days
• Field of Search: 364/518, 364/521, 340/721, 340/724, 340/731, 340/747, 382/41-47
• US Class Current: 715/201
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G06F 3/1423 controlling a plurality of local displays, e.g. CRT and flat panel display

Abstract

A video imaging device coupled to a host computer by a communication line over which control data is transmitted, to one or more sources of video information, and to a monitor by a video line over which video signals based upon the video information and control data are transmitted, includes a converting unit for converting the video information into the video signals for transmittal to the monitor. A receiver receives the control data transmitted over the communication line. The control data includes condition data and associated instruction data with at least some of the instruction data being adapted to alter at least some of the condition data upon execution of the associated instruction data. Stored condition data may be selected in response to user generated event data and display of the video signals on the monitor is manipulated by execution of the instruction data associated with the selected condition data.

Claims

1. A video imaging device including means for coupling said video imaging device to (i) a host computer by a communication line over which control data is transmitted, (ii) a source of video information, and (iii) a monitor by a video line over which video signals based upon that video information and control data are transmitted from the video imaging device to the monitor, said control data including information for forming condition blocks and corresponding sets of instruction blocks, each of said condition blocks being settable into an active or an inactive state, and each of said instruction blocks containing at least one instruction to be executed by said video imaging device which either manipulates the video signals or sets the state of at least one said condition block, said video imaging device comprising:

means for converting said video information into said video signals for transmittal to said monitor over said video line;

means for receiving said control data transmitted over said communication line and for forming said condition blocks and said sets of instruction blocks from the information in said control data;

means for storing said condition blocks and said corresponding sets of instructions blocks;

means for receiving user-generated event data;

means for setting the states of certain of said stored condition blocks in response to said user-generated event data; and

means for executing the instruction blocks in the sets of instruction blocks corresponding to the condition blocks which are in the active state, thereby causing the manipulation of said video signals

and the setting of the states of certain of said stored condition blocks in accordance with the executed instruction blocks.

2. A video imaging device according to claim 1, further comprising:

means for converting said user-generated event data into at least one event data block;

and wherein said means for setting the states of certain of said condition blocks includes

means for comparing said at least one event data block and said condition blocks to determine which of said condition blocks correspond to said at least one event data block, and

means for setting into an active state any of said condition data blocks which correspond to said at least one event data block.

3. A video imaging device according to claim 1, wherein said means for receiving said control data comprises an asynchronous buffer.

4. A video imaging device according to claim 1, wherein said means for receiving said user-generated event data comprises an asynchronous buffer.

5. A method of controlling a display of an image on a monitor in a system including a video imaging device which is coupled to (i) a host computer by a communication line over which control data is transmitted, (ii) a source of video information and (iii) a monitor by a video line over which video signals based upon that video information and control data are transmitted, said control data including information for forming condition blocks, and corresponding sets of instruction blocks, each of said condition blocks being settable into an active or inactive state, and each of said instruction blocks containing at least one instruction to be executed by said video imaging device which either manipulates the video signals or sets the states of at least one of said condition blocks, the method comprising the steps of:

converting said video information into said video signals for transmittal to said monitor over said video line;

receiving said control data transmitted over said communication line;

forming said condition blocks and said instruction blocks form said control data;

storing said condition blocks and associated instruction blocks;

receiving user-generated event data for selection of said stored control data;

setting the states of certain of said stored condition blocks in response to said user-generated event data;

executing the instruction blocks in the sets of instruction blocks corresponding to the condition blocks in the active state; and

altering said stored condition blocks by execution of at least some of said instruction blocks in the sets of instruction blocks corresponding to the condition blocks in the active state.

6. A method of claim 5 further including the steps of:

converting said user-generated event data into at least one event data block;

and wherein said step of setting the active states of certain condition blocks includes the substeps of

comparing said at least one event data block to said condition data blocks to set into an activestate any of said condition data blocks to determine which of said condition blocks correspond to said at least one event data block, and

setting into an active state any corresponding condition blocks.