Simultaneous recording and playback apparatus

• US 5,930,444 A
• Filed: 04/28/1994
• Issued: 07/27/1999
• Est. Priority Date: 04/23/1992
• Status: Expired due to Term

• Current Assignee: Dragon Intellectual Property, LLC
• Original Assignee: Elie Camhi, Lawrence S. Kamhi
• Inventors: Camhi, Elie, Kamhi, Lawrence S.
• Primary Examiner(s): Tran, Thai
• Assistant Examiner(s): NGUYEN, HUY THANH
• Application Number:
  US08/234,727
• Time in Patent Office: 1,916 Days
• Field of Search: 358/335, 358/342, 358/341, 358/343, 360/33.1, 360/14.1, 360/13, 360/36.1, 360/27, 369/32, 369/54
• US Class Current: 386/299
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/42221 Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
• CPC Class Codes: H04N 21/4333 Processing operations in response to a pause request
• CPC Class Codes: H04N 5/4448 for frame-grabbing
• CPC Class Codes: H04N 5/76 Television signal recording

Abstract

A keyboard equipped audiovisial recording and playback device is provided having an input and an output adapted for connection between a users signal source and display device, respectively, and a memory unit with a storage medium enabling random access to programming information stored therein. A keyboard responsive control circuit enables manipulation and transfer of programming information between the input, output and memory. Because of the relative high speed of the control circuitry and memory access, substantially simultaneous recording and playback of television type signals is achieved, thus enabling user controlled programming delay.

Claims

1. A recording and playback apparatus for the substantially immediate and seamless resumption of interrupted perception of program information based upon audio or video signals, or both, without missing the program information presented during the interruption, comprising:

means for powering the apparatus;

a keyboard having a record key and a playback key;

a control circuit coupled responsively to said keyboard;

a memory unit coupled responsively to said control circuit, said memory unit having a medium for storage of information, said storage medium having structure which enables substantially random access to information stored in said medium for retrieval of the stored information from said storage medium;

at least one input, said input being connected to a user'"'"'s audio/video program signal source and also being coupled to said memory unit so as to enable program information presented by the signal source to be transferred to and stored in said memory unit; and

at least one output, said output being connected to a user'"'"'s audio or video display device or both, said output further being connected to said memory unit so as to enable the transfer of program information from said memory unit to the user'"'"'s display device, said control circuit being configured so that substantially simultaneous recording and playback of program information is achieved when said record key is first actuated to begin a recording by initiating storage of the broadcast program information in said memory unit, and said playback key is subsequently and solely actuated to begin time delay playback of the recording from the beginning thereof by initiating retrieval of the stored program information in said memory unit, with the interval of the time delay being the same as the time elapsed between the actuation of said record key and the subsequent actuation of said playback key.

2. The apparatus as set forth in claim 1, further comprising a remote control unit, and wherein said keyboard is housed in said remote control unit.

3. The apparatus as set forth in claim 2, further comprising means for wireless communication between said remote control unit and said control circuit.

4. The apparatus as set forth in claim 3, wherein said means for wireless communication is infra red.

5. The apparatus as set forth in claim 1, wherein said storage medium is removable from the apparatus by the user.

6. The apparatus as set forth in claim 5, wherein said storage medium comprises magnetic or optical disk memory.

7. The apparatus as set forth in claim 1, wherein said storage medium comprises solid state random access memory.

8. The apparatus as set forth in claim 1, wherein said keyboard further includes key means for enabling user control of the rate or sequence or both of transfer of program information from said memory unit to the user'"'"'s display device, and such variation of rate or sequence results in a corresponding variation of the interval of the time delay.

9. The apparatus as set forth in claim 8, said control circuit being further configured to automatically discontinue both recording and playback functions, and resume normal real time display of broadcast program information when said key means for controlling the sequence and rate is subsequently used to advance the playback of stored information to a point where the interval of the time delay becomes negligable.

10. The apparatus as set forth in claim 8, wherein said key means includes a frame advance key for advancing the transfer of program information to the user'"'"'s display device at a rate sufficiently slowly so that a user may review the content of the program information transferred from said memory unit on a frame by frame basis.

11. The apparatus as set forth in claim 1, further having at least one additional input, and all said inputs have programmable switches oriented serially therein so that said inputs may be coupled to a plurality of signal sources, and means for user setting of said programmable switches in which at least one of said plurality of signal sources is selected.

12. The apparatus as set forth in claim 1, further including a filter interposed between said memory unit and said output, said filter being for detecting covert program information according to one or more predetermined patterns, said predetermined patterns being indicative of unsolicited or otherwise unauthorized information within the stored program information.

13. The apparatus as set forth in claim 1, further comprising a timer circuit adapted to enable the pre programmed unattended initiation of recording.

14. A method for enabling the substantially immediate resumption of perception of broadcast program information after an interruption thereof without missing the program information presented during the interruption, comprising the steps of:

providing a recording and playback apparatus having a keyboard having a record key and a playback key;

a control circuit coupled responsively to said keyboard;

a memory unit coupled responsively to said control circuit, said memory unit having a medium for storage of information, said storage medium having structure which enables substantially random access to information stored in said medium for retrieval of the stored information from said storage medium;

at least one input, said input being connected to a user'"'"'s audio/video program signal source and also being coupled to said memory unit so as to enable program information presented by the signal source to be transferred to and stored in said memory unit;

at least one output, said output being connected to a user'"'"'s audio or video display device or both, said output further being connected to said memory unit so as to enable the transfer of program information from said memory unit to the user'"'"'s display device, said control circuit being configured so said substantially simultaneous recording and playback of program information is achieved when said record key is first actuated to begin a recording by initiating storage of the broadcast program information in said memory unit, and said playback key is subsequently and solely actuated to begin playback of the stored program information by initiating retrieval of the program information stored in said memory unit from the beginning thereof;

actuating said record key upon the beginning of the interruption to initiate storage of the broadcast program information in said memory unit; and

actuating said playback key upon the conclusion of the interruption to initiate retrieval and display of the program information stored in said memory unit from the beginning thereof, while continuing to store the broadcast program information.