UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 13G
(RULE 13D-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13D-1(B), (C) AND (D) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13D-2(B)
(AMENDMENT NO. 1)*

IHOP CORP.
(Name of Issuer)

Common stock, $0.01 par value per share
(Title of Class of Securities)

449623107
(CUSIP Number)

February 28, 2005
(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)

[ ] Rule 13d-1(c)

[ ] Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 or otherwise subject to the liabilities of that section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).

-----------------------                                       ------------------
CUSIP NO. 449623107                    13G                     PAGE 2 OF 3 PAGES
-----------------------                                       ------------------

--------------------------------------------------------------------------------
1.    NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Chilton Investment Company, Inc.
13-3667517
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) [ ]
(b) [X]
--------------------------------------------------------------------------------
3.    SEC USE ONLY

--------------------------------------------------------------------------------
4.    CITIZENSHIP OR PLACE OF ORGANIZATION

State of Delaware
--------------------------------------------------------------------------------
5.     SOLE VOTING POWER

2,010,532
NUMBER OF   ------------------------------------------------------------------
SHARES     6.     SHARED VOTING POWER
BENEFICIALLY
OWNED BY           0
EACH      ------------------------------------------------------------------
REPORTING   7.     SOLE DISPOSITIVE POWER
PERSON            
WITH             2,010,532
------------------------------------------------------------------
8.     SHARED DISPOSITIVE POWER

0
--------------------------------------------------------------------------------
9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

2,010,532
--------------------------------------------------------------------------------
10.   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See
Instructions)
[ ]
--------------------------------------------------------------------------------
11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

10.1%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON (See Instructions)

IA
--------------------------------------------------------------------------------

-----------------------                                       ------------------
CUSIP NO. 449623107                     13G                    PAGE 3 OF 3 PAGES
-----------------------                                       ------------------

Pursuant to Rule 13d-2(b) of Regulation 13D-G under th Securities Exchange Act
of 1934, as amended, the Schedule 13G initially filed on February 14, 2004 by
Chilton Investment Company, Inc. (the "Reporting Person") with respect to the
Common Stock, $0.01 par value (the "Common Stock"), of IHOP Corp., a Delaware
corporation (the "Schedule 13G"), is hereby amended by this Amendment No. 1 to
the Schedule 13G to report a change in the information reported in the Schedule
13G.  The Schedule 13G is hereby amended as follows:

Item 4 is hereby amended and restated in its entirety to read:

ITEM 4.     OWNERSHIP

(a) Amount beneficially owned: 2,010,532

(b) Percent of class: 10.1%

(c) Number of shares as to which the person has:

(i)   Sole power to vote or to direct the vote: 2,010,532
(ii)  Shared power to vote or to direct the vote: 0
(iii) Sole power to dispose or to direct the disposition
of: 2,010,532
(iv)  Shared power to dispose or to direct the disposition
of: 0

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete and
correct.

Date: March 10, 2005

CHILTON INVESTMENT COMPANY, INC.

By: /s/ James Steinthal
---------------------------------------
Name:  Jamse Steinthal
Title: Senior Vice President