Method and apparatus for a game delivery service including flash memory and a game back-up module

• US 6,029,046 A
• Filed: 12/01/1995
• Issued: 02/22/2000
• Est. Priority Date: 12/01/1994
• Status: Expired due to Term

• Current Assignee: Tech 5 SAS
• Original Assignee: Scientific-Atlanta Incorporated (Cisco Systems, Inc.)
• Inventors: Khan, Raheel Ahmed, Filion, John Thomas, Burleson, David Brent, Cheek, Donald Scott
• Primary Examiner(s): Miller, John W.
• Application Number:
  US08/566,257
• Time in Patent Office: 1,544 Days
• Field of Search: 348/6, 348/7, 348/10, 348/12, 348/13, 455/3.1, 455/4.1, 455/4.2, 455/5.1, 455/6.1, 455/6.2, 455/6.3
• US Class Current: 725/31
• CPC Class Codes: A63F 13/12 involving interaction between a plurality of game devices, e.g. transmisison or distribution systems protocols for networked virtual reality, networked games H04L29/06034
• CPC Class Codes: A63F 13/30 Interconnection arrangements between game servers and game devices; Interconnection arrangements between game devices; Interconnection arrangements between game servers
• CPC Class Codes: A63F 13/71 using secure communication between game devices and game servers, e.g. by encrypting game data or authenticating players
• CPC Class Codes: A63F 13/73 Authorising game programs or game devices, e.g. checking authenticity
• CPC Class Codes: A63F 13/77 involving data related to game devices or game servers, e.g. configuration data, software version or amount of memory
• CPC Class Codes: A63F 2300/206 Game information storage, e.g. cartridges, CD ROM's, DVD's, smart cards
• CPC Class Codes: A63F 2300/401 Secure communication, e.g. using encryption or authentication
• CPC Class Codes: A63F 2300/409 Data transfer via television network
• CPC Class Codes: A63F 2300/532 using secure communication, e.g. by encryption, authentication
• CPC Class Codes: A63F 2300/552 for downloading to client devices, e.g. using OS version, hardware or software profile of the client device
• CPC Class Codes: A63F 2300/636 involving process of starting or resuming a game
• CPC Class Codes: H04N 21/8166 involving executable data, e.g. software arrangements for executing specific programs G06F9/44; broadcasting computer programmes in broadcast systems H04H20/91; involving the movement of software or configuration parameters H04L67/34
• CPC Class Codes: H04N 7/165 Centralised control of user terminal subsequent to an upstream request signal H04N7/17345; Registering at central by two-way working H04N7/17309
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

A communications terminal for receiving digital data services at a location remote from a transmitter comprises a service controller, a bus system, a random access memory and a non-volatile memory. The non-volatile memory preferably comprises FLASH memory. Data is first loaded into random access memory, preferably SRAM and there checked for errors and error-corrected. The data is preferably loaded in blocks into FLASH memory in a predetermined manner to further secure the service data and to permit the use of byte-wide memories accessed as word-wide memories. A service back-up memory is further connected to the bus for storing service data during suspension of play of a service. The service back-up memory preferably comprises a FLASH memory card having its own basic input output service (BIOS) control. A method of storing back-up service data in a home communications terminal comprises the steps of storing current service data in a first FLASH non-volatile memory and storing previous service data in a state in which play of the service is suspended is a second FLASH non-volatile memory, the service back-up memory described above.

Claims

1. A secure home communications terminal for pay services comprising:

a secure controller for

     1) tuning to a service channel frequency,

     2) demodulating a service and authorization and control data stream,

     3) deserializing and deinterleaving received data,

     4) decrypting received data, and

     5) storing said data in memory, said secure controller comprising a reconfigurable write machine for writing data into memories via write cycles required by a plurality of different memory types;

a random access memory for receiving said stored data;

a non-volatile memory for receiving the stored data from said random access memory,

a plug-in connection to said secure controller for a service player;

a bus system connecting said random access memory, said non-volatile memory and said controller, the service player retrieving service data only upon authorization, said authorization data, stored in memory of said secure controller, being accessible by a controller of said service player for reading and not writing; and

a back-up memory for service data, the backup memory receiving previous data during suspension of play of service.

2. A home communications terminal as recited in claim 1, wherein the non-volatile memory receives the data from the random access memory in blocks of data mixed in said non-volatile memory in a predetermined manner.

3. A home communications terminal as recited in claim 1, wherein said data in non-volatile memory is corrupted after a predetermined period of time after suspending service play.

4. A home communications terminal as recited in claim 1, wherein menu data is written into non-volatile memory only if the menu identifier is different from the menu identifier of previously stored menu data.

5. A home communications terminal as recited in claim 2 wherein said random access memory comprises SRAM and said non-volatile memory comprises FLASH memory.

6. A home communications terminal as recited in claim 2 wherein said non-volatile memory comprises three byte-wide memories accessed as word-wide memories.

7. A home communications terminal as recited in claim 6 wherein said non-volatile memory is extendable to four byte-wide memories.

8. A secure home communications terminal for pay services comprising:

a secure controller for

     1) tuning to a service channel frequency,

     2) demodulating a service and authorization and control data stream,

     3) deserializing and deinterleaving received data,

     4) decrypting received data, and

     5) storing said data in memory;

a random access memory for receiving said stored data;

a service back-up memory for storing service data pending play of a new service,

a plug-in connection to said secure controller for a service player; and

a bus system connecting said service back-up memory and said controller, the service player retrieving service data only upon authorization, said authorization data, stored in memory of said secure controller, being accessible by a controller of said service player for reading and not writing;

wherein said stored data is corrupted after a predetermined period of time after suspending service play.

9. A secure home communications terminal as recited in claim 8 wherein said random access memory comprises dynamic random access memory coupled to said controller by an address and data bus and further comprises static random access memory connected to said bus system.

10. A method of downloading service data to a home communications terminal comprising the steps of:

tuning to a particular channel;

synchronizing to frame data of the channel;

deserializing service data from the frame data in accordance with selection criteria;

checking the service data for errors;

loading only error-free service data into non-volatile memory; and

corrupting the service data stored in non-volatile memory after suspension of play and after a predetermined period of time.

11. A method of downloading service data to a home communications terminal according to claim 10 wherein said non-volatile memory loading step comprises the additional steps of dividing said error-free service data into blocks and mixing said data in said non-volatile memory in accordance with a predetermined program.

12. A method of downloading service data as recited in claim 10 further comprising the step of backing-up service data in additional non-volatile memory upon selection of a new service for play.

13. A method of storing back-up service data in a home communications terminal comprising the steps of:

receiving service data via a transmission channel;

checking said service data for errors and storing error-free service data in a first portion of random access memory and the service data with errors in a second portion of random access memory

storing current game information service data in a first FLASH non-volatile memory; and

storing previous game information service data in a state in which play of said service is suspended in a second FLASH non-volatile memory, said first and second FLASH non-volatile memories being coupled to a shared bus system for interfacing with service player apparatus.

14. A method of storing back-up service data in accordance with claim 13 wherein said service data comprises blocks of data mixed in said first FLASH non-volatile memory.

15. A method of storing back-up service data in accordance with claim 14 wherein said first FLASH non-volatile memory comprises byte-wide memories accessed as word-wide memories.

16. A method of storing back-up service data in accordance with claim 15 wherein said first FLASH non-volatile memory comprises three memories extendable to four.